Marlins Roster & Staff
Transactions
| Date | Transaction |
| 05/22/26 | Miami Marlins signed free agent RHP Ramon Pena to a minor league contract. |
| 05/21/26 | Miami Marlins recalled 3B Graham Pauley from Jacksonville Jumbo Shrimp. |
| 05/21/26 | Miami Marlins optioned RF Rece Hinds to Jacksonville Jumbo Shrimp. |
| 05/21/26 | Cincinnati Reds traded RF Rece Hinds to Miami Marlins for RHP Zach McCambley. |
| 05/21/26 | Cincinnati Reds traded RF Rece Hinds to Miami Marlins for RHP Zach McCambley. |
| 05/20/26 | Miami Marlins recalled LHP Cade Gibson from Jacksonville Jumbo Shrimp. |
| 05/20/26 | Miami Marlins optioned LHP Braxton Garrett to Jacksonville Jumbo Shrimp. |
| 05/18/26 | Miami Marlins signed free agent RHP Jake Christianson to a minor league contract. |
| 05/16/26 | Miami Marlins placed 3B Leo Jiménez on the 7-day injured list. Concussion. |
| 05/14/26 | Miami Marlins optioned RHP Josh Ekness to Jacksonville Jumbo Shrimp. |
| 05/14/26 | Miami Marlins recalled LHP Braxton Garrett from Jacksonville Jumbo Shrimp. |
| 05/13/26 | Miami Marlins activated RHP Pete Fairbanks from the 15-day injured list. |
| 05/13/26 | Miami Marlins transferred LHP Robby Snelling from the 15-day injured list to the 60-day injured list. |
| 05/13/26 | Miami Marlins placed LHP Robby Snelling on the 15-day injured list. Left elbow UCL sprain. |
| 05/11/26 | Miami Marlins signed free agent LHP Christian MacLeod to a minor league contract. |
| 05/10/26 | Miami Marlins released RHP Chris Paddack. |
| 05/10/26 | Miami Marlins sent RHP Stephen Jones outright to Jacksonville Jumbo Shrimp. |
| 05/08/26 | Miami Marlins designated RHP Stephen Jones for assignment. |
| 05/08/26 | Miami Marlins selected the contract of LHP Robby Snelling from Jacksonville Jumbo Shrimp. |
| 05/07/26 | Miami Marlins selected the contract of RHP Stephen Jones from Jacksonville Jumbo Shrimp. |
| 05/07/26 | Miami Marlins recalled LF Heriberto Hernández from Jacksonville Jumbo Shrimp. |
| 05/07/26 | Miami Marlins optioned LHP Dax Fulton to Jacksonville Jumbo Shrimp. |
| 05/07/26 | Miami Marlins optioned 3B Graham Pauley to Jacksonville Jumbo Shrimp. |
| 05/06/26 | Miami Marlins optioned RHP William Kempner to Jacksonville Jumbo Shrimp. |
| 05/06/26 | Miami Marlins recalled LHP Dax Fulton from Jacksonville Jumbo Shrimp. |
| 05/05/26 | Miami Marlins designated RHP Chris Paddack for assignment. |
| 05/05/26 | Miami Marlins recalled RHP William Kempner from Jacksonville Jumbo Shrimp. |
| 05/04/26 | Miami Marlins recalled C Joe Mack from Jacksonville Jumbo Shrimp. |
| 05/04/26 | Miami Marlins optioned C Agustín Ramírez to Jacksonville Jumbo Shrimp. |
| 05/02/26 | Miami Marlins optioned LHP Cade Gibson to Jacksonville Jumbo Shrimp. |
| 05/02/26 | Miami Marlins selected the contract of RHP Josh Ekness from Jacksonville Jumbo Shrimp. |