Orioles Roster & Staff
Transactions
| Date | Transaction |
| 01/31/20 | Baltimore Orioles claimed RHP Travis Lakins Sr. off waivers from Chicago Cubs. |
| 01/31/20 | Baltimore Orioles designated Stevie Wilkerson for assignment. |
| 01/30/20 | Baltimore Orioles claimed Pat Valaika off waivers from Arizona Diamondbacks. |
| 01/30/20 | Baltimore Orioles designated Branden Kline for assignment. |
| 01/28/20 | Baltimore Orioles invited non-roster LHP Alex Wells to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster OF Yusniel Diaz to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster 2B Jose Rondon to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster SS Mason McCoy to spring training. |
| 01/28/20 | Baltimore Orioles signed free agent RHP Brady Rodgers to a minor league contract and invited him to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster RHP Cristian Alvarado to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster 2B Rylan Bannon to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster LHP Ty Blach to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster C Adley Rutschman to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster LHP Hunter Cervenka to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster RHP Marcos Diplan to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster RHP Thomas Eshelman to spring training. |
| 01/28/20 | Baltimore Orioles signed free agent C Bryan Holaday to a minor league contract and invited him to spring training. |
| 01/28/20 | Baltimore Orioles signed free agent C Taylor Davis to a minor league contract and invited him to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster LHP Zac Lowther to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster C Martin Cervenka to spring training. |
| 01/28/20 | Baltimore Orioles invited non-roster LHP Bruce Zimmermann to spring training. |
| 01/17/20 | Baltimore Orioles signed free agent RHP Mickey Jannis to a minor league contract. |
| 01/16/20 | Arizona Diamondbacks claimed 3B Pat Valaika off waivers from Baltimore Orioles. |
| 01/16/20 | Baltimore Orioles signed free agent RHP Christopher Ramirez to a minor league contract. |
| 01/13/20 | Baltimore Orioles sent RHP Eric Hanhold outright to Norfolk Tides. |
| 01/10/20 | Baltimore Orioles claimed SS Richard Urena off waivers from Toronto Blue Jays. |
| 01/10/20 | Baltimore Orioles designated 3B Pat Valaika for assignment. |
| 01/10/20 | Baltimore Orioles signed free agent RHP Cesar Valdez to a minor league contract. |
| 01/09/20 | Baltimore Orioles sent RHP Marcos Diplan outright to Norfolk Tides. |
| 01/08/20 | Cedric Mullins changed number to . |
| 01/07/20 | Baltimore Orioles designated Eric Hanhold for assignment. |
| 01/07/20 | Baltimore Orioles signed free agent SS Jose Iglesias. |
| 01/03/20 | John Means changed number to 47. |