Athletics Roster & Staff
Transactions
| Date | Transaction |
| 05/29/23 | Oakland Athletics designated 1B Jesús Aguilar for assignment. |
| 05/29/23 | Oakland Athletics activated RHP Paul Blackburn from the 15-day injured list. |
| 05/29/23 | Oakland Athletics optioned RHP Garrett Acton to Las Vegas Aviators. |
| 05/29/23 | Oakland Athletics recalled 3B Jonah Bride from Las Vegas Aviators. |
| 05/27/23 | Oakland Athletics optioned RHP Adrián Martínez to Las Vegas Aviators. |
| 05/27/23 | Oakland Athletics recalled LHP Hogan Harris from Las Vegas Aviators. |
| 05/23/23 | Oakland Athletics activated RHP Trevor May from the 15-day injured list. |
| 05/23/23 | Oakland Athletics optioned LHP Kyle Muller to Las Vegas Aviators. |
| 05/22/23 | Oakland Athletics activated RF Seth Brown from the 10-day injured list. |
| 05/22/23 | Oakland Athletics optioned 3B Jordan Diaz to Las Vegas Aviators. |
| 05/20/23 | Oakland Athletics sent RHP Zach Neal outright to Las Vegas Aviators. |
| 05/20/23 | Oakland Athletics recalled RHP James Kaprielian from Las Vegas Aviators. |
| 05/19/23 | Oakland Athletics designated RHP Zach Neal for assignment. |
| 05/19/23 | Oakland Athletics placed RHP Zach Jackson on the 15-day injured list retroactive to May 17, 2023. Flexor tendon strain in right elbow. |
| 05/19/23 | Oakland Athletics selected the contract of RHP Lucas Erceg from Las Vegas Aviators. |
| 05/17/23 | Oakland Athletics sent RF Seth Brown on a rehab assignment to Stockton Ports. |
| 05/17/23 | Oakland Athletics sent RF Seth Brown on a rehab assignment to ACL Athletics. |
| 05/17/23 | Oakland Athletics sent RF Seth Brown on a rehab assignment to Stockton Ports. |
| 05/17/23 | Milwaukee Brewers traded RHP Lucas Erceg to Oakland Athletics for cash. |
| 05/16/23 | Oakland Athletics sent RHP Trevor May on a rehab assignment to Las Vegas Aviators. |
| 05/16/23 | Oakland Athletics sent RHP Trevor May on a rehab assignment to Las Vegas Aviators. |
| 05/15/23 | Oakland Athletics activated RHP Adrián Martínez from the 15-day injured list. |
| 05/15/23 | Oakland Athletics optioned RHP Zach Neal to Las Vegas Aviators. |
| 05/15/23 | Oakland Athletics sent RHP Spencer Patton outright to Las Vegas Aviators. |
| 05/14/23 | Oakland Athletics activated SS Aledmys Díaz from the 10-day injured list. |
| 05/14/23 | Oakland Athletics selected the contract of RHP Garrett Acton from Las Vegas Aviators. |
| 05/14/23 | Oakland Athletics optioned SS Kevin Smith to Las Vegas Aviators. |
| 05/14/23 | Oakland Athletics optioned RHP James Kaprielian to Las Vegas Aviators. |
| 05/13/23 | Oakland Athletics designated RHP Spencer Patton for assignment. |
| 05/13/23 | Oakland Athletics sent RF Seth Brown on a rehab assignment to Las Vegas Aviators. |
| 05/13/23 | Oakland Athletics recalled RHP James Kaprielian from Las Vegas Aviators. |
| 05/12/23 | Oakland Athletics traded 3B Pablo Reyes to Boston Red Sox for cash. |
| 05/11/23 | Oakland Athletics placed RHP Mason Miller on the 15-day injured list retroactive to May 8, 2023. Tightness in right forearm. |
| 05/11/23 | Oakland Athletics placed C Manny Piña on the 60-day injured list. |
| 05/11/23 | Oakland Athletics selected the contract of RHP Zach Neal from Las Vegas Aviators. |
| 05/11/23 | Oakland Athletics optioned RHP Rico Garcia to Las Vegas Aviators. |
| 05/11/23 | Oakland Athletics recalled RHP Luis Medina from Las Vegas Aviators. |
| 05/09/23 | Oakland Athletics sent RHP Adrián Martínez on a rehab assignment to Las Vegas Aviators. |
| 05/08/23 | Oakland Athletics signed free agent RHP Yunior Tur to a minor league contract. |
| 05/06/23 | Oakland Athletics released RHP Jeurys Familia. |
| 05/06/23 | Oakland Athletics sent RHP Domingo Acevedo outright to Las Vegas Aviators. |
| 05/05/23 | Oakland Athletics signed free agent OF Frandy Duran to a minor league contract. |
| 05/04/23 | Oakland Athletics activated RHP Austin Pruitt. |
| 05/04/23 | Oakland Athletics designated RHP Domingo Acevedo for assignment. |
| 05/04/23 | Oakland Athletics designated RHP Jeurys Familia for assignment. |
| 05/04/23 | Oakland Athletics activated RHP Rico Garcia. |
| 05/04/23 | Oakland Athletics activated RHP Spencer Patton. |
| 05/04/23 | Oakland Athletics selected the contract of RHP Austin Pruitt from Las Vegas Aviators. |
| 05/04/23 | Oakland Athletics optioned RHP Adam Oller to Las Vegas Aviators. |
| 05/04/23 | Oakland Athletics selected the contract of RHP Rico Garcia from Las Vegas Aviators. |
| 05/04/23 | Oakland Athletics selected the contract of RHP Spencer Patton from Las Vegas Aviators. |
| 05/03/23 | Oakland Athletics optioned CF Conner Capel to Las Vegas Aviators. |
| 05/03/23 | Oakland Athletics recalled OF JJ Bleday from Las Vegas Aviators. |
| 05/02/23 | Oakland Athletics sent RHP Paul Blackburn on a rehab assignment to Las Vegas Aviators. |
| 05/02/23 | Oakland Athletics placed SS Aledmys Díaz on the 10-day injured list retroactive to April 30, 2023. Strained left hamstring. |
| 05/02/23 | Oakland Athletics sent RHP Trevor May on a rehab assignment to Las Vegas Aviators. |
| 05/02/23 | Oakland Athletics sent RHP Trevor May on a rehab assignment to Las Vegas Aviators. |
| 05/02/23 | Oakland Athletics sent RHP Trevor May on a rehab assignment to Las Vegas Aviators. |
| 05/02/23 | Oakland Athletics recalled SS Nick Allen from Las Vegas Aviators. |
| 05/01/23 | Oakland Athletics sent 2B Tyler Wade outright to Las Vegas Aviators. |