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The 1983 season’s official transaction log: 483 trades, signings and releases involving major-league clubs, listed newest first.
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Dec 29, 1983 | Signed as free agent | Milt Wilcox | — | Detroit Tigers | Free agent signing |
| Dec 23, 1983 | Signed as free agent | Doug Bair | — | Detroit Tigers | Free agent signing |
| Dec 23, 1983 | Signed as free agent | Sal Butera | — | Montreal Expos | Free agent signing |
| Dec 22, 1983 | Signed as free agent | Kent Tekulve | — | Pittsburgh Pirates | Free agent signing |
| Dec 21, 1983 | Trade | Craig Minetto | Baltimore Orioles | Houston Astros | Trade |
| Dec 21, 1983 | Trade | Bobby Sprowl | Houston Astros | Baltimore Orioles | Trade |
| Dec 20, 1983 | Signed as free agent | Manny Trillo | — | San Francisco Giants | Free agent signing |
| Dec 20, 1983 | Signed as free agent | Denny Walling | — | Houston Astros | Free agent signing |
| Dec 20, 1983 | Trade | Jim Slaton | Milwaukee Brewers | California Angels | Trade |
| Dec 20, 1983 | Trade | Bobby Clark | California Angels | Milwaukee Brewers | Trade |
| Dec 20, 1983 | Trade | Tim Burke | New York Yankees | Montreal Expos | Trade |
| Dec 20, 1983 | Trade | Pat Rooney | Montreal Expos | New York Yankees | Trade |
| Dec 20, 1983 | Trade | Jorge Orta | Toronto Blue Jays | Kansas City Royals | Trade |
| Dec 20, 1983 | Trade | Willie Aikens | Kansas City Royals | Toronto Blue Jays | Trade |
| Dec 19, 1983 | Signed as free agent | Amos Otis | — | Pittsburgh Pirates | Free agent signing |
| Dec 19, 1983 | Signed as free agent | Dan Schatzeder | — | Montreal Expos | Free agent signing |
| Dec 19, 1983 | Trade | Mike Browning | New York Yankees | California Angels | Trade |
| Dec 19, 1983 | Trade | Curt Brown | California Angels | New York Yankees | Trade |
| Dec 17, 1983 | Signed as free agent | Darrell Evans | — | Detroit Tigers | Free agent signing |
| Dec 16, 1983 | Signed as free agent | Cliff Speck | — | Chicago White Sox | Free agent signing |
| Dec 15, 1983 | Released | Jeff Doyle | St. Louis Cardinals | — | Release |
| Dec 15, 1983 | Trade | Ron Johnson | Kansas City Royals | Montreal Expos | Trade |
| Dec 15, 1983 | Trade | Tom Dixon | Montreal Expos | Kansas City Royals | Trade |
| Dec 13, 1983 | Signed as free agent | Joe Morgan | — | Oakland Athletics | Free agent signing |
| Dec 9, 1983 | Signed as free agent | Don Werner | — | Kansas City Royals | Free agent signing |
| Dec 8, 1983 | Signed as free agent | Frank LaCorte | — | California Angels | Free agent signing |
| Dec 8, 1983 | Trade | Steve Balboni | New York Yankees | Kansas City Royals | Trade |
| Dec 8, 1983 | Trade | Roger Erickson | New York Yankees | Kansas City Royals | Trade |
| Dec 8, 1983 | Trade | Mike Armstrong | Kansas City Royals | New York Yankees | Trade |
| Dec 8, 1983 | Trade | Duane Dewey | Kansas City Royals | New York Yankees | Trade |
| Dec 8, 1983 | Trade | Joe Szekely | Kansas City Royals | Los Angeles Dodgers | Trade |
| Dec 8, 1983 | Trade | Jose Torres | Kansas City Royals | Los Angeles Dodgers | Trade |
| Dec 8, 1983 | Trade | John Serritella | Kansas City Royals | Los Angeles Dodgers | Trade |
| Dec 8, 1983 | Trade | Joe Beckwith | Los Angeles Dodgers | Kansas City Royals | Trade |
| Dec 8, 1983 | Trade | Carlos Diaz | New York Mets | Los Angeles Dodgers | Trade |
| Dec 8, 1983 | Trade | Bob Bailor | New York Mets | Los Angeles Dodgers | Trade |
| Dec 8, 1983 | Trade | Sid Fernandez | Los Angeles Dodgers | New York Mets | Trade |
| Dec 8, 1983 | Trade | Ross Jones | Los Angeles Dodgers | New York Mets | Trade |
| Dec 8, 1983 | Trade | Wayne Gross | Oakland Athletics | Baltimore Orioles | Trade |
| Dec 8, 1983 | Trade | Tim Stoddard | Baltimore Orioles | Oakland Athletics | Trade |
| Dec 8, 1983 | Trade | Rusty Kuntz | Minnesota Twins | Detroit Tigers | Trade |
| Dec 8, 1983 | Trade | Larry Pashnick | Detroit Tigers | Minnesota Twins | Trade |
| Dec 8, 1983 | Trade | Jim Sundberg | Texas Rangers | Milwaukee Brewers | Trade |
| Dec 8, 1983 | Trade | Ned Yost | Milwaukee Brewers | Texas Rangers | Trade |
| Dec 8, 1983 | Trade | Daniel Scarpetta | Milwaukee Brewers | Texas Rangers | Trade |
| Dec 8, 1983 | Trade | Barry Bonnell | Toronto Blue Jays | Seattle Mariners | Trade |
| Dec 8, 1983 | Trade | Bryan Clark | Seattle Mariners | Toronto Blue Jays | Trade |
| Dec 7, 1983 | Signed as free agent | Mike O'Berry | — | New York Yankees | Free agent signing |
| Dec 7, 1983 | Signed as free agent | Dave Parker | — | Cincinnati Reds | Free agent signing |
| Dec 7, 1983 | Trade | Tom Francis | San Diego Padres | San Francisco Giants | Trade |
| Dec 7, 1983 | Trade | Gary Lucas | San Diego Padres | Montreal Expos | Trade |
| Dec 7, 1983 | Trade | Scott Sanderson | Montreal Expos | Chicago Cubs | Trade |
| Dec 7, 1983 | Trade | Al Newman | Montreal Expos | San Diego Padres | Trade |
| Dec 7, 1983 | Trade | Carmelo Martinez | Chicago Cubs | San Diego Padres | Trade |
| Dec 7, 1983 | Trade | Craig Lefferts | Chicago Cubs | San Diego Padres | Trade |
| Dec 7, 1983 | Trade | Fritzie Connally | Chicago Cubs | San Diego Padres | Trade |
| Dec 7, 1983 | Trade | Unnamed | Oakland Athletics | Montreal Expos | $ |
| Dec 7, 1983 | Trade | Rusty McNealy | Oakland Athletics | Montreal Expos | Trade |
| Dec 7, 1983 | Trade | Ray Burris | Montreal Expos | Oakland Athletics | Trade |
| Dec 7, 1983 | Trade | Unnamed | New York Yankees | California Angels | $ |
| Dec 7, 1983 | Trade | Curt Kaufman | New York Yankees | California Angels | Trade |
| Dec 7, 1983 | Trade | Tim Foli | California Angels | New York Yankees | Trade |
| Dec 7, 1983 | Trade | Tony Bernazard | Seattle Mariners | Cleveland Indians | Trade |
| Dec 7, 1983 | Trade | Gorman Thomas | Cleveland Indians | Seattle Mariners | Trade |
| Dec 7, 1983 | Trade | Jack Perconte | Cleveland Indians | Seattle Mariners | Trade |
| Dec 7, 1983 | Trade | Mike Smithson | Texas Rangers | Minnesota Twins | Trade |
| Dec 7, 1983 | Trade | John Butcher | Texas Rangers | Minnesota Twins | Trade |
| Dec 7, 1983 | Trade | Sam Sorce | Texas Rangers | Minnesota Twins | Trade |
| Dec 7, 1983 | Trade | Gary Ward | Minnesota Twins | Texas Rangers | Trade |
| Dec 6, 1983 | Signed as free agent | Lynn Jones | — | Kansas City Royals | Free agent signing |
| Dec 6, 1983 | Trade | Luis Quinones | Oakland Athletics | Cleveland Indians | Trade |
| Dec 6, 1983 | Trade | Jim Essian | Cleveland Indians | Oakland Athletics | Trade |
| Dec 6, 1983 | Trade | John Tudor | Boston Red Sox | Pittsburgh Pirates | Trade |
| Dec 6, 1983 | Trade | Mike Easler | Pittsburgh Pirates | Boston Red Sox | Trade |
| Dec 6, 1983 | Trade | Joe Pittman | San Diego Padres | San Francisco Giants | Trade |
| Dec 6, 1983 | Trade | Champ Summers | San Francisco Giants | San Diego Padres | Trade |
| Dec 5, 1983 | Released | Byron McLaughlin | California Angels | — | Release |
| Dec 5, 1983 | Signed as free agent | Bert Roberge | — | Chicago White Sox | Free agent signing |
| Dec 5, 1983 | Signed | Victor Rosario | — | Boston Red Sox | Amateur free agent signing |
| Dec 5, 1983 | Trade | Ron Reed | Philadelphia Phillies | Chicago White Sox | Trade |
| Dec 4, 1983 | Signed as free agent | Ty Waller | — | Houston Astros | Free agent signing |
| Dec 2, 1983 | Released | Marshall Brant | Oakland Athletics | — | Release |
| Dec 2, 1983 | Signed as free agent | Kelly Heath | — | New York Yankees | Free agent signing |
| Dec 2, 1983 | Signed as free agent | Jerry Koosman | — | Chicago White Sox | Free agent signing |
| Nov 26, 1983 | Signed as free agent | Les Straker | — | Oakland Athletics | Free agent signing |
| Nov 22, 1983 | Signed | Oscar Azocar | — | New York Yankees | Amateur free agent signing |
| Nov 22, 1983 | Signed as free agent | Rod Carew | — | California Angels | Free agent signing |
| Nov 22, 1983 | Signed | Amalio Carreno | — | New York Yankees | Amateur free agent signing |
| Nov 22, 1983 | Signed as free agent | Joe Cowley | — | New York Yankees | Free agent signing |
| Nov 22, 1983 | Signed as free agent | Jeff Little | — | Pittsburgh Pirates | Free agent signing |
| Nov 22, 1983 | Signed as free agent | Andy Rincon | — | Pittsburgh Pirates | Free agent signing |
| Nov 21, 1983 | Signed as free agent | Marv Foley | — | Texas Rangers | Free agent signing |
| Nov 21, 1983 | Signed as free agent | Dale Murray | — | New York Yankees | Free agent signing |
| Nov 21, 1983 | Released | Karl Pagel | Cleveland Indians | — | Release |
| Nov 21, 1983 | Trade | Bill Caudill | Seattle Mariners | Oakland Athletics | Trade |
| Nov 21, 1983 | Trade | Darrel Akerfelds | Seattle Mariners | Oakland Athletics | Trade |
| Nov 21, 1983 | Trade | Dave Beard | Oakland Athletics | Seattle Mariners | Trade |
| Nov 21, 1983 | Trade | Bob Kearney | Oakland Athletics | Seattle Mariners | Trade |
| Nov 21, 1983 | Trade | Fran Mullins | Chicago White Sox | Cincinnati Reds | Trade |
| Nov 21, 1983 | Trade | Steve Christmas | Cincinnati Reds | Chicago White Sox | Trade |
| Nov 17, 1983 | Signed | Carlos Martinez | — | New York Yankees | Amateur free agent signing |
| Nov 16, 1983 | Signed as free agent | Joe DeSa | — | Chicago White Sox | Free agent signing |
| Nov 14, 1983 | Signed as free agent | Bruce Bochte | — | Oakland Athletics | Free agent signing |
| Nov 14, 1983 | Signed | Sil Campusano | — | Toronto Blue Jays | Amateur free agent signing |
| Nov 11, 1983 | Signed | Jose Nunez | — | Kansas City Royals | Amateur free agent signing |
| Nov 9, 1983 | Released | Rich Gale | Cincinnati Reds | — | Release |
| Nov 9, 1983 | Released | Rowland Office | New York Yankees | — | Release |
| Nov 8, 1983 | Released | Mickey Mahler | California Angels | — | Release |
| Nov 7, 1983 | Released | Dan Ford | Baltimore Orioles | — | Release |
| Nov 4, 1983 | Signed as free agent | Brad Gulden | — | Cincinnati Reds | Free agent signing |
| Nov 4, 1983 | Signed as free agent | Ray Searage | — | Milwaukee Brewers | Free agent signing |
| Nov 3, 1983 | Released | Larry Christenson | Philadelphia Phillies | — | Release |
| Oct 31, 1983 | Signed | Tim Barrett | — | Montreal Expos | Amateur free agent signing |
| Oct 31, 1983 | Released | Larry Biittner | Texas Rangers | — | Release |
| Oct 31, 1983 | Released | Jon Matlack | Texas Rangers | — | Release |
| Oct 31, 1983 | Released | Joe Morgan | Philadelphia Phillies | — | Release |
| Oct 31, 1983 | Signed as free agent | Jim Smith | — | Detroit Tigers | Free agent signing |
| Oct 31, 1983 | Released | Dick Tidrow | Chicago White Sox | — | Release |
| Oct 30, 1983 | Signed as free agent | Tom Runnells | — | Cincinnati Reds | Free agent signing |
| Oct 28, 1983 | Released | Dave Huppert | Baltimore Orioles | — | Release |
| Oct 28, 1983 | Released | Joe Rudi | Oakland Athletics | — | Release |
| Oct 27, 1983 | Released | Chris Smith | San Francisco Giants | — | Release |
| Oct 26, 1983 | Signed as free agent | Steve Shields | — | Atlanta Braves | Free agent signing |
| Oct 24, 1983 | Trade | Rich Buonantony | Chicago Cubs | Milwaukee Brewers | Trade |
| Oct 23, 1983 | Signed as free agent | Keith Comstock | — | Minnesota Twins | Free agent signing |
| Oct 21, 1983 | Signed | Sandy Alomar | — | San Diego Padres | Amateur free agent signing |
| Oct 21, 1983 | Released | Sal Butera | Detroit Tigers | — | Release |
| Oct 21, 1983 | Released | Bob Molinaro | Detroit Tigers | — | Release |
| Oct 21, 1983 | Released | Bill Nahorodny | Detroit Tigers | — | Release |
| Oct 21, 1983 | Trade | Brett Butler | Atlanta Braves | Cleveland Indians | Trade |
| Oct 21, 1983 | Trade | Brook Jacoby | Atlanta Braves | Cleveland Indians | Trade |
| Oct 19, 1983 | Signed | Edgar Caceres | — | Los Angeles Dodgers | Amateur free agent signing |
| Oct 19, 1983 | Released | Pete Rose | Philadelphia Phillies | — | Release |
| Oct 17, 1983 | Released | Eric Rasmussen | Kansas City Royals | — | Release |
| Oct 11, 1983 | Released | Cesar Geronimo | Kansas City Royals | — | Release |
| Oct 11, 1983 | Trade | Steve Fireovid | San Diego Padres | Philadelphia Phillies | Trade |
| Oct 7, 1983 | Released | Terry Crowley | Montreal Expos | — | Release |
| Oct 7, 1983 | Released | Woodie Fryman | Montreal Expos | — | Release |
| Oct 7, 1983 | Released | Phil Niekro | Atlanta Braves | — | Release |
| Oct 4, 1983 | Released | Tommy Boggs | Atlanta Braves | — | Release |
| Oct 3, 1983 | Released | Steve Renko | Kansas City Royals | — | Release |
| Oct 1983 | Released | Jeff Little | Minnesota Twins | — | Release |
| Oct 1983 | Released | Andy Rincon | St. Louis Cardinals | — | Release |
| Oct 1983 | Released | Jim Smith | Chicago White Sox | — | Release |
| Oct 1983 | Released | Don Werner | Texas Rangers | — | Release |
| Sep 30, 1983 | Released | Jerry Morales | Chicago Cubs | — | Release |
| Sep 27, 1983 | Signed | Scott Medvin | — | Detroit Tigers | Amateur free agent signing |
| Sep 26, 1983 | Trade | Terry Leach | New York Mets | Chicago Cubs | Trade |
| Sep 26, 1983 | Trade | Mitch Cook | Chicago Cubs | New York Mets | Trade |
| Sep 26, 1983 | Trade | Jim Adamczak | Chicago Cubs | New York Mets | Trade |
| Sep 22, 1983 | Signed | Dave Stapleton | — | Milwaukee Brewers | Amateur free agent signing |
| Sep 20, 1983 | Trade | Marty Decker | Philadelphia Phillies | San Diego Padres | Trade |
| Sep 20, 1983 | Trade | Ed Wojna | Philadelphia Phillies | San Diego Padres | Trade |
| Sep 20, 1983 | Trade | Darren Burroughs | Philadelphia Phillies | San Diego Padres | Trade |
| Sep 20, 1983 | Trade | Lance McCullers | Philadelphia Phillies | San Diego Padres | Trade |
| Sep 19, 1983 | Released | Johnny Paredes | Philadelphia Phillies | — | Release |
| Sep 16, 1983 | Released | Mike Phillips | Montreal Expos | — | Release |
| Sep 16, 1983 | Trade | Ricky Wright | Los Angeles Dodgers | Texas Rangers | Trade |
| Sep 16, 1983 | Trade | Tom Dozier | St. Louis Cardinals | Oakland Athletics | Trade |
| Sep 16, 1983 | Trade | Jim Strichek | St. Louis Cardinals | Oakland Athletics | Trade |
| Sep 12, 1983 | Trade | Dennis Rasmussen | New York Yankees | San Diego Padres | Trade |
| Sep 12, 1983 | Trade | Edwin Rodriguez | New York Yankees | San Diego Padres | Trade |
| Sep 7, 1983 | Trade | Miguel Dilone | Chicago White Sox | Pittsburgh Pirates | Trade |
| Sep 7, 1983 | Trade | Mike Maitland | Chicago White Sox | Pittsburgh Pirates | Trade |
| Sep 7, 1983 | Trade | Randy Niemann | Pittsburgh Pirates | Chicago White Sox | Trade |
| Sep 4, 1983 | Signed | Geronimo Berroa | — | Toronto Blue Jays | Amateur free agent signing |
| Sep 2, 1983 | Trade | Rick Behenna | Atlanta Braves | Cleveland Indians | Trade |
| Sep 2, 1983 | Trade | Steve Baker | Oakland Athletics | St. Louis Cardinals | Trade |
| Sep 1, 1983 | Signed as free agent | Bob Molinaro | — | Detroit Tigers | Free agent signing |
| Sep 1, 1983 | Trade | Miguel Dilone | Cleveland Indians | Chicago White Sox | Trade |
| Aug 31, 1983 | Signed as free agent | Aurelio Rodriguez | — | Chicago White Sox | Free agent signing |
| Aug 31, 1983 | Trade | Tito Landrum | St. Louis Cardinals | Baltimore Orioles | Trade |
| Aug 31, 1983 | Trade | Sixto Lezcano | San Diego Padres | Philadelphia Phillies | Trade |
| Aug 29, 1983 | Signed | Jose Melendez | — | Pittsburgh Pirates | Amateur free agent signing |
| Aug 28, 1983 | Trade | Unnamed | Atlanta Braves | Cleveland Indians | $150000 |
| Aug 28, 1983 | Trade | Len Barker | Cleveland Indians | Atlanta Braves | Trade |
| Aug 26, 1983 | Trade | Unnamed | New York Yankees | San Diego Padres | $200000 |
| Aug 26, 1983 | Trade | John Montefusco | San Diego Padres | New York Yankees | Trade |
| Aug 25, 1983 | Trade | Rich Barnes | Chicago White Sox | Cleveland Indians | Trade |
| Aug 23, 1983 | Signed as free agent | Ed Farmer | — | Oakland Athletics | Free agent signing |
| Aug 23, 1983 | Signed as free agent | Mike Phillips | — | Montreal Expos | Free agent signing |
| Aug 19, 1983 | Trade | Unnamed | San Francisco Giants | Pittsburgh Pirates | $ |
| Aug 19, 1983 | Trade | Milt May | San Francisco Giants | Pittsburgh Pirates | Trade |
| Aug 19, 1983 | Trade | Steve Nicosia | Pittsburgh Pirates | San Francisco Giants | Trade |
| Aug 19, 1983 | Trade | Unnamed | Los Angeles Dodgers | Texas Rangers | $200000 |
| Aug 19, 1983 | Trade | Rick Honeycutt | Texas Rangers | Los Angeles Dodgers | Trade |
| Aug 19, 1983 | Trade | Dave Stewart | Los Angeles Dodgers | Texas Rangers | Trade |
| Aug 17, 1983 | Trade | Unnamed | Montreal Expos | Cleveland Indians | $300000 |
| Aug 17, 1983 | Trade | Manny Trillo | Cleveland Indians | Montreal Expos | Trade |
| Aug 17, 1983 | Trade | Don Carter | Montreal Expos | Cleveland Indians | Trade |
| Aug 15, 1983 | Signed as free agent | Jimmy Sexton | — | St. Louis Cardinals | Free agent signing |
| Aug 13, 1983 | Released | Ed Farmer | Philadelphia Phillies | — | Release |
| Aug 13, 1983 | Released | Aurelio Rodriguez | Baltimore Orioles | — | Release |
| Aug 11, 1983 | Signed as free agent | Jerry Turner | — | Philadelphia Phillies | Free agent signing |
| Aug 10, 1983 | Released | Jimmy Sexton | Chicago White Sox | — | Release |
| Aug 10, 1983 | Trade | Jerry Mumphrey | New York Yankees | Houston Astros | Trade |
| Aug 10, 1983 | Trade | Omar Moreno | Houston Astros | New York Yankees | Trade |
| Aug 9, 1983 | Signed as free agent | Randy Lerch | — | San Francisco Giants | Free agent signing |
| Aug 8, 1983 | Released | Paul Moskau | Chicago Cubs | — | Release |
| Aug 6, 1983 | Signed | Jack Howell | — | California Angels | Amateur free agent signing |
| Aug 5, 1983 | Released | Vida Blue | Kansas City Royals | — | Release |
| Aug 5, 1983 | Released | Bill Fahey | Detroit Tigers | — | Release |
| Aug 5, 1983 | Signed as free agent | Bobby Moore | — | Milwaukee Brewers | Free agent signing |
| Aug 3, 1983 | Signed as free agent | Pat Perry | — | St. Louis Cardinals | Free agent signing |
| Aug 2, 1983 | Signed as free agent | Rick Lancellotti | — | San Diego Padres | Free agent signing |
| Aug 1, 1983 | Released | Junior Kennedy | Chicago Cubs | — | Release |
| Jul 28, 1983 | Released | Randy Lerch | Montreal Expos | — | Release |
| Jul 26, 1983 | Released | Rick Lancellotti | Texas Rangers | — | Release |
| Jul 26, 1983 | Signed as free agent | Ron Roenicke | — | Seattle Mariners | Free agent signing |
| Jul 26, 1983 | Released | Jerry Turner | San Diego Padres | — | Release |
| Jul 25, 1983 | Signed as free agent | Dave LaRoche | — | New York Yankees | Free agent signing |
| Jul 22, 1983 | Signed | Melido Perez | — | Kansas City Royals | Amateur free agent signing |
| Jul 22, 1983 | Released | Mike York | New York Yankees | — | Release |
| Jul 22, 1983 | Trade | Scott Dye | New York Mets | Oakland Athletics | Trade |
| Jul 22, 1983 | Trade | Kelvin Moore | Oakland Athletics | New York Mets | Trade |
| Jul 21, 1983 | Signed as free agent | Ken Reitz | — | St. Louis Cardinals | Free agent signing |
| Jul 19, 1983 | Released | Bill Travers | California Angels | — | Release |
| Jul 18, 1983 | Released | Ron Roenicke | Los Angeles Dodgers | — | Release |
| Jul 15, 1983 | Signed as free agent | Danny Boone | — | Milwaukee Brewers | Free agent signing |
| Jul 15, 1983 | Signed as free agent | Bill Castro | — | Milwaukee Brewers | Free agent signing |
| Jul 14, 1983 | Released | Bobby Moore | Chicago White Sox | — | Release |
| Jul 12, 1983 | Released | Pat Perry | Cleveland Indians | — | Release |
| Jul 11, 1983 | Signed as free agent | John Pacella | — | Baltimore Orioles | Free agent signing |
| Jul 10, 1983 | Signed | Paul Assenmacher | — | Atlanta Braves | Amateur free agent signing |
| Jul 10, 1983 | Released | Hosken Powell | Toronto Blue Jays | — | Release |
| Jul 8, 1983 | Released | Bill Castro | Kansas City Royals | — | Release |
| Jul 7, 1983 | Signed as free agent | Al Woods | — | Toronto Blue Jays | Free agent signing |
| Jul 6, 1983 | Released | Joe Ferguson | California Angels | — | Release |
| Jul 6, 1983 | Released | Dave Goltz | California Angels | — | Release |
| Jul 6, 1983 | Released | Jim Kaat | St. Louis Cardinals | — | Release |
| Jul 6, 1983 | Signed as free agent | Gaylord Perry | — | Kansas City Royals | Free agent signing |
| Jul 6, 1983 | Trade | Mark Smith | Baltimore Orioles | Oakland Athletics | Trade |
| Jul 6, 1983 | Trade | Jerry King | Oakland Athletics | Baltimore Orioles | Trade |
| Jul 5, 1983 | Trade | Dave Rucker | Detroit Tigers | St. Louis Cardinals | Trade |
| Jul 1, 1983 | Signed | Juan Nieves | — | Milwaukee Brewers | Amateur free agent signing |
| Jul 1, 1983 | Released | Hipolito Peña | Milwaukee Brewers | — | Release |
| Jul 1, 1983 | Signed as free agent | Pat Perry | — | Cleveland Indians | Free agent signing |
| Jul 1, 1983 | Signed as free agent | Rodney Scott | — | Montreal Expos | Free agent signing (date approximate, per the source) |
| Jun 30, 1983 | Trade | Pat Underwood | Detroit Tigers | Cincinnati Reds | Trade |
| Jun 30, 1983 | Trade | Wayne Krenchicki | Cincinnati Reds | Detroit Tigers | Trade |
| Jun 28, 1983 | Signed as free agent | Rick Reuschel | — | Chicago Cubs | Free agent signing |
| Jun 27, 1983 | Released | Gaylord Perry | Seattle Mariners | — | Release |
| Jun 24, 1983 | Released | Pat Perry | Houston Astros | — | Release |
| Jun 23, 1983 | Signed as free agent | Jimmy Sexton | — | Chicago White Sox | Free agent signing |
| Jun 22, 1983 | Signed as free agent | Steve Comer | — | Philadelphia Phillies | Free agent signing |
| Jun 22, 1983 | Trade | Doug Bair | St. Louis Cardinals | Detroit Tigers | Trade |
| Jun 21, 1983 | Signed as free agent | Doyle Alexander | — | Toronto Blue Jays | Free agent signing |
| Jun 21, 1983 | Trade | Mike Sodders | Minnesota Twins | Chicago White Sox | Trade |
| Jun 21, 1983 | Trade | Rusty Kuntz | Chicago White Sox | Minnesota Twins | Trade |
| Jun 20, 1983 | Signed as free agent | Tim Blackwell | — | California Angels | Free agent signing |
| Jun 20, 1983 | Released | Bobby Murcer | New York Yankees | — | Release |
| Jun 20, 1983 | Released | Mike Phillips | Montreal Expos | — | Release |
| Jun 18, 1983 | Signed | Sergio Valdez | — | Montreal Expos | Amateur free agent signing |
| Jun 17, 1983 | Released | Danny Boone | Houston Astros | — | Release |
| Jun 17, 1983 | Trade | Dave Wehrmeister | New York Yankees | Philadelphia Phillies | Trade |
| Jun 17, 1983 | Trade | Kelly Faulk | Philadelphia Phillies | New York Yankees | Trade |
| Jun 17, 1983 | Trade | Jim Rasmussen | Philadelphia Phillies | New York Yankees | Trade |
| Jun 16, 1983 | Released | Steve Comer | Seattle Mariners | — | Release |
| Jun 15, 1983 | Released | Jimmy Sexton | Oakland Athletics | — | Release |
| Jun 15, 1983 | Trade | Unnamed | New York Yankees | Oakland Athletics | $ |
| Jun 15, 1983 | Trade | Matt Keough | Oakland Athletics | New York Yankees | Trade |
| Jun 15, 1983 | Trade | Ben Callahan | New York Yankees | Oakland Athletics | Trade |
| Jun 15, 1983 | Trade | Marshall Brant | New York Yankees | Oakland Athletics | Trade |
| Jun 15, 1983 | Trade | Neil Allen | New York Mets | St. Louis Cardinals | Trade |
| Jun 15, 1983 | Trade | Rick Ownbey | New York Mets | St. Louis Cardinals | Trade |
| Jun 15, 1983 | Trade | Keith Hernandez | St. Louis Cardinals | New York Mets | Trade |
| Jun 15, 1983 | Trade | Julio Cruz | Seattle Mariners | Chicago White Sox | Trade |
| Jun 15, 1983 | Trade | Tony Bernazard | Chicago White Sox | Seattle Mariners | Trade |
| Jun 14, 1983 | Trade | Marvell Wynne | New York Mets | Pittsburgh Pirates | Trade |
| Jun 14, 1983 | Trade | Steve Senteney | New York Mets | Pittsburgh Pirates | Trade |
| Jun 14, 1983 | Trade | Junior Ortiz | Pittsburgh Pirates | New York Mets | Trade |
| Jun 14, 1983 | Trade | Arthur Ray | Pittsburgh Pirates | New York Mets | Trade |
| Jun 14, 1983 | Trade | Floyd Rayford | Baltimore Orioles | St. Louis Cardinals | Trade |
| Jun 11, 1983 | Signed | Felix Fermin | — | Pittsburgh Pirates | Amateur free agent signing |
| Jun 11, 1983 | Signed | Eric King | — | San Francisco Giants | Amateur free agent signing |
| Jun 10, 1983 | Signed as free agent | Rick Lancellotti | — | Texas Rangers | Free agent signing |
| Jun 9, 1983 | Released | Wayne Nordhagen | Chicago Cubs | — | Release |
| Jun 9, 1983 | Released | Rick Reuschel | New York Yankees | — | Release |
| Jun 9, 1983 | Released | Bill Robinson | Philadelphia Phillies | — | Release |
| Jun 8, 1983 | Trade | Steve Farr | Pittsburgh Pirates | Cleveland Indians | Trade |
| Jun 8, 1983 | Trade | John Malkin | Cleveland Indians | Pittsburgh Pirates | Trade |
| Jun 7, 1983 | Trade | Charlie Leibrandt | Cincinnati Reds | Kansas City Royals | Trade |
| Jun 7, 1983 | Trade | Bob Tufts | Kansas City Royals | Cincinnati Reds | Trade |
| Jun 6, 1983 | Released | Bob Molinaro | Philadelphia Phillies | — | Release |
| Jun 6, 1983 | Trade | Gorman Thomas | Milwaukee Brewers | Cleveland Indians | Trade |
| Jun 6, 1983 | Trade | Jamie Easterly | Milwaukee Brewers | Cleveland Indians | Trade |
| Jun 6, 1983 | Trade | Ernie Camacho | Milwaukee Brewers | Cleveland Indians | Trade |
| Jun 6, 1983 | Trade | Rick Manning | Cleveland Indians | Milwaukee Brewers | Trade |
| Jun 6, 1983 | Trade | Rick Waits | Cleveland Indians | Milwaukee Brewers | Trade |
| Jun 2, 1983 | Signed as free agent | Mike Phillips | — | Montreal Expos | Free agent signing |
| May 31, 1983 | Released | Doyle Alexander | New York Yankees | — | Release |
| May 31, 1983 | Released | Tim Blackwell | Montreal Expos | — | Release |
| May 31, 1983 | Signed as free agent | Bob Long | — | Seattle Mariners | Free agent signing |
| May 30, 1983 | Released | Rick Lancellotti | Montreal Expos | — | Release |
| May 29, 1983 | Signed | Candy Sierra | — | San Diego Padres | Amateur free agent signing |
| May 25, 1983 | Signed as free agent | Terry Crowley | — | Montreal Expos | Free agent signing |
| May 25, 1983 | Trade | Wallace Johnson | Montreal Expos | San Francisco Giants | Trade |
| May 25, 1983 | Trade | Mike Vail | San Francisco Giants | Montreal Expos | Trade |
| May 24, 1983 | Signed as free agent | Phil Huffman | — | New York Mets | Free agent signing |
| May 22, 1983 | Released | Mark Funderburk | Kansas City Royals | — | Release |
| May 22, 1983 | Trade | Joe Lefebvre | San Diego Padres | Philadelphia Phillies | Trade |
| May 22, 1983 | Trade | Sid Monge | Philadelphia Phillies | San Diego Padres | Trade |
| May 22, 1983 | Trade | Willie Hernandez | Chicago Cubs | Philadelphia Phillies | Trade |
| May 22, 1983 | Trade | Dick Ruthven | Philadelphia Phillies | Chicago Cubs | Trade |
| May 22, 1983 | Trade | Bill Johnson | Philadelphia Phillies | Chicago Cubs | Trade |
| May 18, 1983 | Trade | Tom Owens | Cleveland Indians | Seattle Mariners | Trade |
| May 17, 1983 | Signed | Dennis Powell | — | Los Angeles Dodgers | Amateur free agent signing |
| May 17, 1983 | Released | Dave Roberts | Philadelphia Phillies | — | Release |
| May 17, 1983 | Signed | Dana Williams | — | Boston Red Sox | Amateur free agent signing |
| May 16, 1983 | Released | Mike Ivie | Detroit Tigers | — | Release |
| May 12, 1983 | Signed as free agent | Tom Dodd | — | Chicago White Sox | Free agent signing |
| May 12, 1983 | Signed as free agent | Tom Klawitter | — | Minnesota Twins | Free agent signing |
| May 9, 1983 | Signed | Jose de Jesus | — | Kansas City Royals | Amateur free agent signing |
| May 9, 1983 | Released | Tom Dodd | New York Yankees | — | Release |
| May 9, 1983 | Trade | Brett Wise | Los Angeles Dodgers | Cincinnati Reds | Trade |
| May 9, 1983 | Trade | John Franco | Los Angeles Dodgers | Cincinnati Reds | Trade |
| May 9, 1983 | Trade | Rafael Landestoy | Cincinnati Reds | Los Angeles Dodgers | Trade |
| May 4, 1983 | Signed | Efrain Valdez | — | San Diego Padres | Amateur free agent signing |
| May 3, 1983 | Trade | Felix Perdomo | New York Mets | New York Yankees | Trade |
| May 2, 1983 | Released | Tom Klawitter | Los Angeles Dodgers | — | Release |
| May 2, 1983 | Signed as free agent | Bob Owchinko | — | Pittsburgh Pirates | Free agent signing |
| May 1, 1983 | Signed as free agent | Brian Kingman | — | San Francisco Giants | Free agent signing |
| Apr 27, 1983 | Signed as free agent | Mike Kinnunen | — | Montreal Expos | Free agent signing |
| Apr 26, 1983 | Signed as free agent | Ron Pruitt | — | Philadelphia Phillies | Free agent signing |
| Apr 19, 1983 | Signed as free agent | Bobby Brown | — | San Diego Padres | Free agent signing |
| Apr 18, 1983 | Trade | Tucker Ashford | New York Yankees | New York Mets | Trade |
| Apr 18, 1983 | Trade | Steve Ray | New York Mets | New York Yankees | Trade |
| Apr 16, 1983 | Signed as free agent | Paul Mirabella | — | Baltimore Orioles | Free agent signing |
| Apr 14, 1983 | Released | Ron Pruitt | San Francisco Giants | — | Release |
| Apr 11, 1983 | Signed as free agent | Steve Comer | — | Seattle Mariners | Free agent signing |
| Apr 10, 1983 | Signed as free agent | Jack Lazorko | — | Milwaukee Brewers | Free agent signing |
| Apr 8, 1983 | Signed as free agent | Al Hrabosky | — | Chicago White Sox | Free agent signing |
| Apr 7, 1983 | Signed as free agent | Clint Hurdle | — | New York Mets | Free agent signing |
| Apr 7, 1983 | Trade | Eddie Miller | Detroit Tigers | Philadelphia Phillies | Trade |
| Apr 7, 1983 | Trade | Raymond Borucki | Philadelphia Phillies | Detroit Tigers | Trade |
| Apr 6, 1983 | Released | John Pacella | Texas Rangers | — | Release |
| Apr 5, 1983 | Signed as free agent | Mike Griffin | — | Texas Rangers | Free agent signing |
| Apr 5, 1983 | Signed as free agent | Don Hood | — | Kansas City Royals | Free agent signing |
| Apr 5, 1983 | Released | Jack Lazorko | Texas Rangers | — | Release |
| Apr 4, 1983 | Released | Terry Crowley | Baltimore Orioles | — | Release |
| Apr 4, 1983 | Released | Clint Hurdle | Seattle Mariners | — | Release |
| Apr 4, 1983 | Released | Mike Kinnunen | St. Louis Cardinals | — | Release |
| Apr 4, 1983 | Signed as free agent | Rich Murray | — | San Francisco Giants | Free agent signing |
| Apr 3, 1983 | Released | Bob Long | Chicago White Sox | — | Release |
| Apr 2, 1983 | Released | Phil Huffman | Kansas City Royals | — | Release |
| Apr 2, 1983 | Released | Ron LeFlore | Chicago White Sox | — | Release |
| Apr 2, 1983 | Trade | Tom Veryzer | New York Mets | Chicago Cubs | Trade |
| Apr 2, 1983 | Trade | Craig Weissmann | Chicago Cubs | New York Mets | Trade |
| Apr 2, 1983 | Trade | Rob Schilling | Chicago Cubs | New York Mets | Trade |
| Apr 1, 1983 | Released | Bombo Rivera | Kansas City Royals | — | Release |
| Apr 1, 1983 | Trade | Unnamed | Chicago Cubs | Milwaukee Brewers | $ |
| Apr 1, 1983 | Trade | Steve Lake | Milwaukee Brewers | Chicago Cubs | Trade |
| Apr 1, 1983 | Trade | Jerry Dybzinski | Cleveland Indians | Chicago White Sox | Trade |
| Apr 1, 1983 | Trade | Pat Tabler | Chicago White Sox | Cleveland Indians | Trade |
| Mar 31, 1983 | Released | Lamar Johnson | Texas Rangers | — | Release |
| Mar 31, 1983 | Trade | Kelly Paris | St. Louis Cardinals | Cincinnati Reds | Trade |
| Mar 31, 1983 | Trade | Jim Strichek | Cincinnati Reds | St. Louis Cardinals | Trade |
| Mar 31, 1983 | Trade | Alan Knicely | Houston Astros | Cincinnati Reds | Trade |
| Mar 31, 1983 | Trade | Bill Dawley | Cincinnati Reds | Houston Astros | Trade |
| Mar 31, 1983 | Trade | Tony Walker | Cincinnati Reds | Houston Astros | Trade |
| Mar 29, 1983 | Trade | Unnamed | New York Mets | Los Angeles Dodgers | $ |
| Mar 29, 1983 | Trade | Steve Walker | New York Mets | Los Angeles Dodgers | Trade |
| Mar 29, 1983 | Trade | Jody Johnston | New York Mets | Los Angeles Dodgers | Trade |
| Mar 29, 1983 | Trade | Mark Bradley | Los Angeles Dodgers | New York Mets | Trade |
| Mar 29, 1983 | Released | Dave Revering | Detroit Tigers | — | Release |
| Mar 28, 1983 | Released | Ross Baumgarten | Pittsburgh Pirates | — | Release |
| Mar 28, 1983 | Released | Dwight Bernard | Milwaukee Brewers | — | Release |
| Mar 28, 1983 | Released | Bobby Brown | Seattle Mariners | — | Release |
| Mar 28, 1983 | Released | Steve Comer | New York Yankees | — | Release |
| Mar 28, 1983 | Released | Dick Davis | Pittsburgh Pirates | — | Release |
| Mar 28, 1983 | Released | John Milner | Pittsburgh Pirates | — | Release |
| Mar 28, 1983 | Released | Bob Owchinko | Oakland Athletics | — | Release |
| Mar 28, 1983 | Released | Al Woods | Oakland Athletics | — | Release |
| Mar 28, 1983 | Trade | Bambi Mesa | Minnesota Twins | Los Angeles Dodgers | Trade |
| Mar 28, 1983 | Trade | Tack Wilson | Los Angeles Dodgers | Minnesota Twins | Trade |
| Mar 27, 1983 | Released | Mike Griffin | San Diego Padres | — | Release |
| Mar 27, 1983 | Released | Randy Jones | Pittsburgh Pirates | — | Release |
| Mar 26, 1983 | Released | Paul Mirabella | Texas Rangers | — | Release |
| Mar 26, 1983 | Signed as free agent | Marty Pevey | — | St. Louis Cardinals | Free agent signing |
| Mar 25, 1983 | Released | Barry Foote | New York Yankees | — | Release |
| Mar 25, 1983 | Released | Brian Kingman | Boston Red Sox | — | Release |
| Mar 25, 1983 | Released | Pete Redfern | Minnesota Twins | — | Release |
| Mar 25, 1983 | Released | Kevin Saucier | Detroit Tigers | — | Release |
| Mar 25, 1983 | Trade | Unnamed | Detroit Tigers | Minnesota Twins | $ |
| Mar 25, 1983 | Trade | Sal Butera | Minnesota Twins | Detroit Tigers | Trade |
| Mar 25, 1983 | Trade | Walter Poole | Detroit Tigers | Minnesota Twins | Trade |
| Mar 24, 1983 | Released | John Mayberry | New York Yankees | — | Release |
| Mar 24, 1983 | Trade | Johnny Grubb | Texas Rangers | Detroit Tigers | Trade |
| Mar 24, 1983 | Trade | Dave Tobik | Detroit Tigers | Texas Rangers | Trade |
| Mar 23, 1983 | Released | Mick Kelleher | California Angels | — | Release |
| Mar 20, 1983 | Released | Allen Ripley | Chicago Cubs | — | Release |
| Mar 19, 1983 | Signed as free agent | Bob Lacey | — | California Angels | Free agent signing |
| Mar 16, 1983 | Trade | Geoff Meadows | Houston Astros | St. Louis Cardinals | Trade |
| Mar 16, 1983 | Trade | George Bjorkman | St. Louis Cardinals | Houston Astros | Trade |
| Mar 15, 1983 | Signed as free agent | Julio Gonzalez | — | Detroit Tigers | Free agent signing |
| Mar 15, 1983 | Signed as free agent | Bob Long | — | Chicago White Sox | Free agent signing |
| Mar 8, 1983 | Signed as free agent | Tom Hausman | — | Pittsburgh Pirates | Free agent signing |
| Mar 3, 1983 | Signed | Jerry Browne | — | Texas Rangers | Amateur free agent signing |
| Mar 1, 1983 | Signed as free agent | Kiko Garcia | — | Philadelphia Phillies | Free agent signing |
| Mar 1, 1983 | Signed as free agent | Bill Nahorodny | — | Detroit Tigers | Free agent signing |
| Feb 28, 1983 | Signed as free agent | Rowland Office | — | New York Yankees | Free agent signing |
| Feb 28, 1983 | Signed as free agent | Jerry Turner | — | San Diego Padres | Free agent signing |
| Feb 24, 1983 | Signed as free agent | Bert Campaneris | — | New York Yankees | Free agent signing |
| Feb 24, 1983 | Signed as free agent | John Lowenstein | — | Baltimore Orioles | Free agent signing |
| Feb 23, 1983 | Signed as free agent | Bruce Bochy | — | San Diego Padres | Free agent signing |
| Feb 23, 1983 | Signed as free agent | Mickey Klutts | — | Toronto Blue Jays | Free agent signing |
| Feb 23, 1983 | Signed | Yorkis Perez | — | Minnesota Twins | Amateur free agent signing |
| Feb 21, 1983 | Signed as free agent | Dave Revering | — | Detroit Tigers | Free agent signing |
| Feb 19, 1983 | Released | Rich Murray | Montreal Expos | — | Release |
| Feb 16, 1983 | Signed | Tony Castillo | — | Toronto Blue Jays | Amateur free agent signing |
| Feb 16, 1983 | Signed as free agent | Jamie Quirk | — | St. Louis Cardinals | Free agent signing |
| Feb 15, 1983 | Signed as free agent | Randy Moffitt | — | Toronto Blue Jays | Free agent signing |
| Feb 15, 1983 | Trade | Mike Davis | New York Mets | Boston Red Sox | Trade |
| Feb 14, 1983 | Signed as free agent | Thad Bosley | — | Oakland Athletics | Free agent signing |
| Feb 9, 1983 | Signed as free agent | Miguel Dilone | — | Cleveland Indians | Free agent signing |
| Feb 9, 1983 | Signed as free agent | Steve Renko | — | Kansas City Royals | Free agent signing |
| Feb 7, 1983 | Signed as free agent | Otto Velez | — | Cleveland Indians | Free agent signing |
| Feb 7, 1983 | Signed as free agent | Joel Youngblood | — | San Francisco Giants | Free agent signing |
| Feb 7, 1983 | Trade | Butch Benton | Chicago Cubs | Montreal Expos | Trade |
| Feb 7, 1983 | Trade | Jerry Manuel | Montreal Expos | Chicago Cubs | Trade |
| Feb 6, 1983 | Signed as free agent | Ron Hodges | — | New York Mets | Free agent signing |
| Feb 5, 1983 | Trade | Leon Roberts | Toronto Blue Jays | Kansas City Royals | Trade |
| Feb 5, 1983 | Trade | Cecil Fielder | Kansas City Royals | Toronto Blue Jays | Trade |
| Feb 4, 1983 | Trade | Steve Senteney | Toronto Blue Jays | New York Mets | Trade |
| Feb 4, 1983 | Trade | Jorge Orta | New York Mets | Toronto Blue Jays | Trade |
| Feb 3, 1983 | Signed as free agent | Ed Hearn | — | New York Mets | Free agent signing |
| Feb 3, 1983 | Signed | Alonzo Powell | — | San Francisco Giants | Amateur free agent signing |
| Feb 3, 1983 | Signed as free agent | Aurelio Rodriguez | — | Baltimore Orioles | Free agent signing |
| Feb 2, 1983 | Signed as free agent | Rick Peters | — | Oakland Athletics | Free agent signing |
| Feb 2, 1983 | Released | Steve Renko | California Angels | — | Release |
| Feb 2, 1983 | Trade | Chris Smith | Montreal Expos | San Francisco Giants | Trade |
| Feb 2, 1983 | Trade | Jim Wohlford | San Francisco Giants | Montreal Expos | Trade |
| Feb 1, 1983 | Signed as free agent | Mark Funderburk | — | Kansas City Royals | Free agent signing |
| Feb 1983 | Signed as free agent | Clint Hurdle | — | Seattle Mariners | Free agent signing |
| Jan 31, 1983 | Signed | Enrique Burgos | — | Toronto Blue Jays | Amateur free agent signing |
| Jan 31, 1983 | Signed as free agent | Mike Hart | — | Minnesota Twins | Free agent signing |
| Jan 31, 1983 | Signed as free agent | Tony Perez | — | Philadelphia Phillies | Free agent signing |
| Jan 31, 1983 | Signed as free agent | Bill Robinson | — | Philadelphia Phillies | Free agent signing |
| Jan 31, 1983 | Trade | Tom Dixon | New York Mets | Montreal Expos | Trade |
| Jan 31, 1983 | Trade | Bob Baldrick | Montreal Expos | New York Mets | Trade |
| Jan 28, 1983 | Signed as free agent | Nino Espinosa | — | Pittsburgh Pirates | Free agent signing |
| Jan 28, 1983 | Released | Mike Hart | Seattle Mariners | — | Release |
| Jan 27, 1983 | Signed as free agent | Alan Bannister | — | Cleveland Indians | Free agent signing |
| Jan 27, 1983 | Trade | Vance McHenry | Seattle Mariners | Texas Rangers | Trade |
| Jan 27, 1983 | Trade | Bob Babcock | Texas Rangers | Seattle Mariners | Trade |
| Jan 26, 1983 | Signed as free agent | Dave Stegman | — | Chicago White Sox | Free agent signing |
| Jan 25, 1983 | Signed as free agent | Jim Anderson | — | Texas Rangers | Free agent signing |
| Jan 25, 1983 | Signed as free agent | Rich Wortham | — | Oakland Athletics | Free agent signing |
| Jan 25, 1983 | Trade | Steve Trout | Chicago White Sox | Chicago Cubs | Trade |
| Jan 25, 1983 | Trade | Warren Brusstar | Chicago White Sox | Chicago Cubs | Trade |
| Jan 25, 1983 | Trade | Scott Fletcher | Chicago Cubs | Chicago White Sox | Trade |
| Jan 25, 1983 | Trade | Pat Tabler | Chicago Cubs | Chicago White Sox | Trade |
| Jan 25, 1983 | Trade | Randy Martz | Chicago Cubs | Chicago White Sox | Trade |
| Jan 25, 1983 | Trade | Dick Tidrow | Chicago Cubs | Chicago White Sox | Trade |
| Jan 23, 1983 | Signed as free agent | Jim Pankovits | — | Houston Astros | Free agent signing |
| Jan 21, 1983 | Released | Bruce Bochy | New York Mets | — | Release |
| Jan 21, 1983 | Signed as free agent | Steve Comer | — | New York Yankees | Free agent signing |
| Jan 21, 1983 | Signed as free agent | Ellis Valentine | — | California Angels | Free agent signing |
| Jan 21, 1983 | Trade | Jim Essian | Seattle Mariners | Cleveland Indians | Trade |
| Jan 20, 1983 | Signed as free agent | Jose Cano | — | Atlanta Braves | Free agent signing |
| Jan 19, 1983 | Trade | Ron Cey | Los Angeles Dodgers | Chicago Cubs | Trade |
| Jan 19, 1983 | Trade | Vance Lovelace | Chicago Cubs | Los Angeles Dodgers | Trade |
| Jan 19, 1983 | Trade | Dan Cataline | Chicago Cubs | Los Angeles Dodgers | Trade |
| Jan 18, 1983 | Signed as free agent | Bill Almon | — | Oakland Athletics | Free agent signing |
| Jan 15, 1983 | Signed as free agent | Joe Nolan | — | Baltimore Orioles | Free agent signing |
| Jan 14, 1983 | Signed as free agent | Al Cowens | — | Seattle Mariners | Free agent signing |
| Jan 14, 1983 | Signed as free agent | Paul Moskau | — | Chicago Cubs | Free agent signing |
| Jan 14, 1983 | Released | Greg Wells | Minnesota Twins | — | Release |
| Jan 13, 1983 | Released | Rowland Office | Philadelphia Phillies | — | Release |
| Jan 13, 1983 | Trade | Mike Torrez | Boston Red Sox | New York Mets | Trade |
| Jan 12, 1983 | Trade | Bob Veselic | Minnesota Twins | Houston Astros | Trade |
| Jan 12, 1983 | Trade | Rick Lysander | Houston Astros | Minnesota Twins | Trade |
| Jan 10, 1983 | Signed as free agent | Mike Bishop | — | New York Mets | Free agent signing |
| Jan 10, 1983 | Signed | Josias Manzanillo | — | Boston Red Sox | Amateur free agent signing |
| Jan 10, 1983 | Trade | John Harris | California Angels | Cincinnati Reds | Trade |
| Jan 10, 1983 | Trade | Mike O'Berry | Cincinnati Reds | California Angels | Trade |
| Jan 7, 1983 | Released | Ed Hearn | Philadelphia Phillies | — | Release |
| Jan 7, 1983 | Released | Rich Wortham | Philadelphia Phillies | — | Release |
| Jan 5, 1983 | Released | Tom Hausman | Atlanta Braves | — | Release |
| Jan 5, 1983 | Trade | Rich Gale | San Francisco Giants | Cincinnati Reds | Trade |
| Jan 5, 1983 | Trade | Mike Vail | Cincinnati Reds | San Francisco Giants | Trade |
| before the 1983 season | Signed as free agent | Randy Jones | — | Pittsburgh Pirates | Free agent signing |
| before the 1983 season | Released | Dave Revering | Seattle Mariners | — | Release |
Every row is mapped onto the same trade / signing / release vocabulary the modern feed uses, with the era’s own type description kept on each row. Club names are the names of the day (the Boston Braves years, the Brooklyn Dodgers years), and each links to the franchise it is today. Some dates are only partially known or flagged approximate by the source; they are shown exactly as published, never completed to a fake precise day.