Orioles Roster & Staff
Transactions
| Date | Transaction |
| 07/31/19 | Baltimore Orioles traded RHP Dan Straily to Philadelphia Phillies for cash. |
| 07/31/19 | Baltimore Orioles optioned RHP Chandler Shepherd to Norfolk Tides. |
| 07/30/19 | Baltimore Orioles placed LF Dwight Smith Jr on the 10-day injured list. Left calf strain. |
| 07/30/19 | Baltimore Orioles recalled Chandler Shepherd from Norfolk Tides. |
| 07/30/19 | Baltimore Orioles claimed 2B Jose Rondon off waivers from Chicago White Sox. |
| 07/29/19 | Baltimore Orioles recalled David Hess from Norfolk Tides. |
| 07/29/19 | Baltimore Orioles optioned RHP Evan Phillips to Norfolk Tides. |
| 07/27/19 | Seattle Mariners claimed CF Keon Broxton off waivers from Baltimore Orioles. |
| 07/26/19 | Baltimore Orioles designated RHP Nate Karns for assignment. |
| 07/26/19 | Baltimore Orioles optioned LHP Tanner Scott to Norfolk Tides. |
| 07/26/19 | Baltimore Orioles recalled Dillon Tate from Bowie Baysox. |
| 07/26/19 | Baltimore Orioles recalled Evan Phillips from Norfolk Tides. |
| 07/26/19 | Baltimore Orioles placed LHP John Means on the 10-day injured list retroactive to July 25, 2019. Left bicep strain. |
| 07/25/19 | Baltimore Orioles optioned 3B Rio Ruiz to Norfolk Tides. |
| 07/25/19 | Baltimore Orioles selected the contract of 3B Jace Peterson from Norfolk Tides. |
| 07/23/19 | Baltimore Orioles sent DH Mark Trumbo on a rehab assignment to Norfolk Tides. |
| 07/23/19 | Baltimore Orioles optioned RHP Branden Kline to Norfolk Tides. |
| 07/23/19 | Baltimore Orioles activated RHP Dylan Bundy from the 10-day injured list. |
| 07/23/19 | Baltimore Orioles sent RHP Nate Karns on a rehab assignment to Frederick Keys. |
| 07/22/19 | Baltimore Orioles signed free agent LHP Andry Mercedes to a minor league contract. |
| 07/21/19 | Baltimore Orioles recalled Branden Kline from Norfolk Tides. |
| 07/21/19 | Baltimore Orioles designated CF Keon Broxton for assignment. |
| 07/20/19 | Baltimore Orioles optioned C Austin Wynns to Norfolk Tides. |
| 07/20/19 | Baltimore Orioles recalled Tanner Scott from Norfolk Tides. |
| 07/19/19 | Baltimore Orioles signed free agent 3B Jace Peterson to a minor league contract. |
| 07/19/19 | Baltimore Orioles recalled Austin Wynns from Norfolk Tides. |
| 07/18/19 | Baltimore Orioles optioned RHP Tayler Scott to Norfolk Tides. |
| 07/17/19 | Baltimore Orioles sent RHP Nate Karns on a rehab assignment to Bowie Baysox. |
| 07/17/19 | Baltimore Orioles traded 2B Yeltsin Gudino to Toronto Blue Jays. |
| 07/15/19 | Baltimore Orioles optioned RF DJ Stewart to Norfolk Tides. |
| 07/14/19 | Baltimore Orioles recalled Tom Eshelman from Norfolk Tides. |
| 07/14/19 | Baltimore Orioles optioned RHP David Hess to Norfolk Tides. |
| 07/13/19 | Baltimore Orioles traded RHP Andrew Cashner and cash to Boston Red Sox for CF Elio Prado and SS Noelberth Romero. |
| 07/13/19 | Baltimore Orioles recalled David Hess from Norfolk Tides. |
| 07/13/19 | Baltimore Orioles traded RHP Andrew Cashner and cash to Boston Red Sox for CF Elio Prado and SS Noelberth Romero. |
| 07/13/19 | Baltimore Orioles traded RHP Andrew Cashner and cash to Boston Red Sox for CF Elio Prado and SS Noelberth Romero. |
| 07/13/19 | Baltimore Orioles recalled Tayler Scott from Norfolk Tides. |
| 07/13/19 | Baltimore Orioles placed RHP Dylan Bundy on the 10-day injured list. Right knee tendinitis. |
| 07/12/19 | Baltimore Orioles sent RHP Nate Karns on a rehab assignment to Frederick Keys. |
| 07/12/19 | Baltimore Orioles signed RHP Houston Roth. |
| 07/12/19 | Baltimore Orioles signed RHP Dan Hammer. |
| 07/11/19 | Baltimore Orioles sent RF DJ Stewart on a rehab assignment to Norfolk Tides. |
| 07/10/19 | Baltimore Orioles signed free agent RHP Carlos Sanchez to a minor league contract. |
| 07/09/19 | Baltimore Orioles activated RHP Aaron Brooks. |
| 07/08/19 | Baltimore Orioles sent RHP Josh Lucas outright to Norfolk Tides. |
| 07/08/19 | Baltimore Orioles optioned RHP David Hess to Norfolk Tides. |
| 07/06/19 | Baltimore Orioles recalled David Hess from Norfolk Tides. |
| 07/06/19 | Baltimore Orioles optioned RHP Josh Lucas to Norfolk Tides. |
| 07/06/19 | Baltimore Orioles designated RHP Josh Lucas for assignment. |
| 07/06/19 | Baltimore Orioles sent RHP Matt Wotherspoon outright to Norfolk Tides. |
| 07/06/19 | Baltimore Orioles claimed RHP Aaron Brooks off waivers from Oakland Athletics. |
| 07/04/19 | Baltimore Orioles sent OF DJ Stewart on a rehab assignment to Bowie Baysox. |
| 07/02/19 | Baltimore Orioles signed free agent RHP Harol Arias to a minor league contract. |
| 07/02/19 | Baltimore Orioles optioned RHP Branden Kline to Norfolk Tides. |
| 07/02/19 | Baltimore Orioles signed free agent RHP Erick Caines to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent RHP Randy Beriguete to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent C Kenny Baez to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent LHP Adrion Lacle to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent RHP Cesar Alvarez to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent OF Jesus Alvarado to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent SS Cesar Aguasvivas to a minor league contract. |
| 07/02/19 | Josh Lucas roster status changed by Baltimore Orioles. |
| 07/02/19 | Baltimore Orioles optioned RHP Tom Eshelman to Norfolk Tides. |
| 07/02/19 | Baltimore Orioles signed free agent OF Dax Stubbs to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent RHP Moises Chace to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent RHP Francisco Crispin to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent IF Roberto Martinez to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent SS Anderson Rogers to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent LHP Luis Ortiz to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent RHP Edgar Portes to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent LHP Jose Ramirez to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent RHP Charbel Abboud to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent C Ricardo Rivera to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent LHP Moises Salas to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent OF Luis Gonzalez to a minor league contract. |
| 07/02/19 | Baltimore Orioles designated Matt Wotherspoon for assignment. |
| 07/02/19 | Baltimore Orioles signed free agent RHP Raul Rangel to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent IF Leonel Sanchez to a minor league contract. |
| 07/02/19 | Baltimore Orioles signed free agent IF Rolphy Cruz to a minor league contract. |
| 07/02/19 | Baltimore Orioles selected the contract of RHP Asher Wojciechowski from Norfolk Tides. |
| 07/02/19 | Baltimore Orioles signed free agent OF Luis De La Cruz to a minor league contract. |
| 07/01/19 | Baltimore Orioles optioned LHP Tanner Scott to Norfolk Tides. |
| 07/01/19 | Baltimore Orioles selected the contract of Tom Eshelman from Norfolk Tides. |
| 07/01/19 | Baltimore Orioles signed free agent IF Erison Placencia to a minor league contract. |
| 07/01/19 | Baltimore Orioles signed free agent RHP Alejandro Mendez to a minor league contract. |
| 07/01/19 | Baltimore Orioles signed free agent LHP Johan Berroa to a minor league contract. |
| 07/01/19 | Baltimore Orioles transferred LHP Josh Rogers from the 10-day injured list to the 60-day injured list. Left elbow sprain. |