Orioles Roster & Staff
Transactions
| Date | Transaction |
| 05/31/19 | Baltimore Orioles signed free agent RHP Yeudry Manzanillo to a minor league contract. |
| 05/31/19 | Baltimore Orioles signed free agent RHP Petter Caty to a minor league contract. |
| 05/30/19 | Baltimore Orioles signed free agent RHP Christopher Marte to a minor league contract. |
| 05/29/19 | RHP Jose Valencia roster status changed by Baltimore Orioles. |
| 05/28/19 | Baltimore Orioles sent DH Mark Trumbo on a rehab assignment to Bowie Baysox. |
| 05/28/19 | Baltimore Orioles recalled RF DJ Stewart from Norfolk Tides. |
| 05/28/19 | Baltimore Orioles optioned RHP Evan Phillips to Norfolk Tides. |
| 05/28/19 | Baltimore Orioles signed free agent C Joel Munoz to a minor league contract. |
| 05/27/19 | Baltimore Orioles traded RHP Yefry Ramirez to Pittsburgh Pirates for Player To Be Named Later. |
| 05/27/19 | Baltimore Orioles signed free agent RF Welington Santana to a minor league contract. |
| 05/26/19 | Baltimore Orioles placed 1B Chris Davis on the 10-day injured list retroactive to May 25, 2019. Left hip inflammation. |
| 05/26/19 | Baltimore Orioles recalled Evan Phillips from Norfolk Tides. |
| 05/24/19 | Baltimore Orioles activated CF Keon Broxton. |
| 05/24/19 | Baltimore Orioles optioned CF Joey Rickard to Norfolk Tides. |
| 05/22/19 | New York Mets traded CF Keon Broxton to Baltimore Orioles for Future Considerations. |
| 05/22/19 | Baltimore Orioles transferred RHP Alex Cobb from the 10-day injured list to the 60-day injured list. Lumbar strain. |
| 05/22/19 | Baltimore Orioles designated RHP Yefry Ramirez for assignment. |
| 05/22/19 | Baltimore Orioles optioned RHP Chandler Shepherd to Norfolk Tides. |
| 05/22/19 | Baltimore Orioles claimed RHP Chandler Shepherd off waivers from Chicago Cubs. |
| 05/20/19 | Baltimore Orioles signed free agent SS Raily Nunez to a minor league contract. |
| 05/20/19 | Baltimore Orioles optioned RHP Yefry Ramirez to Norfolk Tides. |
| 05/20/19 | Baltimore Orioles signed free agent RHP Jairo Vasquez to a minor league contract. |
| 05/20/19 | Baltimore Orioles signed free agent SS Luis Valdez to a minor league contract. |
| 05/20/19 | Baltimore Orioles signed free agent C Julio Herrera to a minor league contract. |
| 05/20/19 | Baltimore Orioles transferred RHP Nate Karns from the 10-day injured list to the 60-day injured list. Right forearm strain. |
| 05/20/19 | Baltimore Orioles signed free agent SS Yorkislandy Alvarez to a minor league contract. |
| 05/20/19 | Baltimore Orioles selected the contract of RHP Josh Lucas from Norfolk Tides. |
| 05/20/19 | Baltimore Orioles signed free agent RHP Darlin Alcantara to a minor league contract. |
| 05/20/19 | Baltimore Orioles signed free agent RHP Brayner Sanchez to a minor league contract. |
| 05/16/19 | Baltimore Orioles optioned RHP Jimmy Yacabonis to Norfolk Tides. |
| 05/16/19 | Baltimore Orioles activated LHP Richard Bleier from the 10-day injured list. |
| 05/16/19 | Baltimore Orioles optioned Evan Phillips to Norfolk Tides. |
| 05/15/19 | Baltimore Orioles recalled Evan Phillips from Norfolk Tides. |
| 05/14/19 | Baltimore Orioles sent LHP Richard Bleier on a rehab assignment to Frederick Keys. |
| 05/11/19 | Baltimore Orioles optioned RHP Evan Phillips to Norfolk Tides. |
| 05/11/19 | Baltimore Orioles recalled Jimmy Yacabonis from Norfolk Tides. |
| 05/09/19 | Baltimore Orioles sent LHP Richard Bleier on a rehab assignment to Bowie Baysox. |
| 05/09/19 | Baltimore Orioles signed free agent IF Luis Sena to a minor league contract. |
| 05/07/19 | Baltimore Orioles sent LHP Richard Bleier on a rehab assignment to Frederick Keys. |
| 05/02/19 | Baltimore Orioles optioned LF Anthony Santander to Norfolk Tides. |
| 05/01/19 | Baltimore Orioles signed free agent LHP Andersson Espinal to a minor league contract. |
| 05/01/19 | Baltimore Orioles recalled Anthony Santander from Norfolk Tides. |
| 05/01/19 | Baltimore Orioles signed free agent OF Edison Lantigua to a minor league contract. |
| 05/01/19 | Baltimore Orioles signed free agent OF Juan De La Rosa to a minor league contract. |