Reds Roster & Staff
Transactions
| Date | Transaction |
| 05/31/25 | Cincinnati Reds signed free agent C Angel Barboza to a minor league contract. |
| 05/30/25 | Cincinnati Reds activated RF Jake Fraley from the 10-day injured list. |
| 05/30/25 | Cincinnati Reds placed LF Austin Hays on the 10-day injured list retroactive to May 29, 2025. Left foot contusion. |
| 05/30/25 | Cincinnati Reds recalled RHP Lyon Richardson from Louisville Bats. |
| 05/29/25 | RHP Mike Villani roster status changed by Cincinnati Reds. |
| 05/29/25 | Cincinnati Reds traded RHP Alexis Díaz to Los Angeles Dodgers for RHP Mike Villani. |
| 05/29/25 | Cincinnati Reds traded RHP Alexis Díaz to Los Angeles Dodgers for RHP Mike Villani. |
| 05/29/25 | Cincinnati Reds optioned RHP Luis Mey to Louisville Bats. |
| 05/28/25 | Cincinnati Reds signed free agent 2B Peyton Holt to a minor league contract. |
| 05/25/25 | Cincinnati Reds sent 1B Christian Encarnacion-Strand on a rehab assignment to Louisville Bats. |
| 05/25/25 | Cincinnati Reds sent 1B Christian Encarnacion-Strand on a rehab assignment to Louisville Bats. |
| 05/24/25 | Cincinnati Reds sent RF Jake Fraley on a rehab assignment to Louisville Bats. |
| 05/23/25 | Cincinnati Reds signed free agent LHP Malvin Garcia to a minor league contract. |
| 05/23/25 | Cincinnati Reds signed free agent 2B Garrett Hampson. |
| 05/23/25 | Cincinnati Reds transferred RHP Carson Spiers from the 15-day injured list to the 60-day injured list. Right shoulder impingement. |
| 05/23/25 | Cincinnati Reds placed RHP Hunter Greene on the 15-day injured list. Right groin strain. |
| 05/23/25 | Cincinnati Reds activated RHP Hunter Greene from the 15-day injured list. |
| 05/23/25 | Cincinnati Reds optioned RF Rece Hinds to Louisville Bats. |
| 05/22/25 | Cincinnati Reds sent 1B Christian Encarnacion-Strand on a rehab assignment to ACL Reds. |
| 05/22/25 | Cincinnati Reds optioned RHP Lyon Richardson to Louisville Bats. |
| 05/21/25 | Cincinnati Reds activated RHP Ian Gibaut from the 15-day injured list. |
| 05/21/25 | Cincinnati Reds activated LHP Sam Moll from the 15-day injured list. |
| 05/21/25 | Cincinnati Reds optioned LHP Sam Moll to Louisville Bats. |
| 05/21/25 | Cincinnati Reds optioned RHP Chase Petty to Louisville Bats. |
| 05/20/25 | Cincinnati Reds signed free agent RHP Zachary Murray to a minor league contract. |
| 05/20/25 | Cincinnati Reds signed free agent LHP Jacob Edwards to a minor league contract. |
| 05/16/25 | Cincinnati Reds sent RHP Rhett Lowder on a rehab assignment to Louisville Bats. |
| 05/16/25 | Cincinnati Reds sent RHP Rhett Lowder on a rehab assignment to Louisville Bats. |
| 05/12/25 | Cincinnati Reds signed free agent RHP Edgar Lugo to a minor league contract. |
| 05/11/25 | Cincinnati Reds sent RHP Ian Gibaut on a rehab assignment to Louisville Bats. |
| 05/11/25 | Cincinnati Reds sent RHP Rhett Lowder on a rehab assignment to Dayton Dragons. |
| 05/11/25 | Cincinnati Reds sent RHP Ian Gibaut on a rehab assignment to Louisville Bats. |
| 05/11/25 | Cincinnati Reds sent RHP Ian Gibaut on a rehab assignment to Louisville Bats. |
| 05/11/25 | Cincinnati Reds sent RHP Rhett Lowder on a rehab assignment to Dayton Dragons. |
| 05/10/25 | Cincinnati Reds activated 1B Connor Joe. |
| 05/10/25 | Cincinnati Reds placed RF Jake Fraley on the 10-day injured list retroactive to May 7, 2025. Left calf tenderness. |
| 05/09/25 | Cincinnati Reds placed RHP Hunter Greene on the 15-day injured list retroactive to May 8, 2025. Right groin strain. |
| 05/09/25 | Cincinnati Reds activated LF Austin Hays from the 10-day injured list. |
| 05/09/25 | Cincinnati Reds signed free agent RHP Beau Blanchard to a minor league contract. |
| 05/09/25 | Cincinnati Reds transferred 2B Tyler Callihan from the 10-day injured list to the 60-day injured list. Left forearm fracture. |
| 05/09/25 | Cincinnati Reds placed LF Austin Hays on the 10-day injured list. Left foot contusion. |
| 05/09/25 | Cincinnati Reds recalled RHP Chase Petty from Louisville Bats. |
| 05/09/25 | San Diego Padres traded 1B Connor Joe to Cincinnati Reds for RHP Andrew Moore and cash. |
| 05/09/25 | Cincinnati Reds optioned LF Blake Dunn to Louisville Bats. |
| 05/09/25 | Cincinnati Reds recalled LF Will Benson from Louisville Bats. |
| 05/09/25 | Cincinnati Reds optioned LF Jacob Hurtubise to Louisville Bats. |
| 05/09/25 | San Diego Padres traded 1B Connor Joe to Cincinnati Reds for RHP Andrew Moore and cash. |
| 05/07/25 | Cincinnati Reds placed 3B Noelvi Marte on the 10-day injured list retroactive to May 5, 2025. Left oblique strain. |
| 05/07/25 | Cincinnati Reds recalled RF Rece Hinds from Louisville Bats. |
| 05/06/25 | Cincinnati Reds placed 2B Tyler Callihan on the 10-day injured list. Left forearm fracture. |
| 05/06/25 | Cincinnati Reds sent RHP Rhett Lowder on a rehab assignment to ACL Reds. |
| 05/06/25 | Cincinnati Reds sent RHP Rhett Lowder on a rehab assignment to ACL Reds. |
| 05/06/25 | Cincinnati Reds recalled RHP Lyon Richardson from Louisville Bats. |
| 05/06/25 | Cincinnati Reds recalled LF Jacob Hurtubise from Louisville Bats. |
| 05/06/25 | Cincinnati Reds optioned RHP Yosver Zulueta to Louisville Bats. |
| 05/02/25 | Cincinnati Reds placed LF Austin Hays on the 10-day injured list retroactive to April 29, 2025. Left hamstring strain. |
| 05/02/25 | Cincinnati Reds activated C Tyler Stephenson from the 10-day injured list. |
| 05/01/25 | Cincinnati Reds signed free agent RHP Jefersson Marte to a minor league contract. |
| 05/01/25 | Cincinnati Reds signed free agent LHP Iker Redona to a minor league contract. |
| 05/01/25 | Cincinnati Reds recalled RHP Yosver Zulueta from Louisville Bats. |
| 05/01/25 | Cincinnati Reds recalled RHP Luis Mey from Louisville Bats. |
| 05/01/25 | Cincinnati Reds optioned RHP Lyon Richardson to Louisville Bats. |
| 05/01/25 | Cincinnati Reds optioned RHP Alexis Díaz to Louisville Bats. |
| 05/01/25 | Cincinnati Reds optioned RHP Chase Petty to Louisville Bats. |