Marlins Roster & Staff
Transactions
| Date | Transaction |
| 06/16/26 | Miami Marlins optioned RHP William Kempner to Jacksonville Jumbo Shrimp. |
| 06/16/26 | Miami Marlins recalled LHP Dax Fulton from Jacksonville Jumbo Shrimp. |
| 06/12/26 | Miami Marlins signed free agent RHP Zach Pop to a minor league contract. |
| 06/10/26 | Miami Marlins signed free agent RHP Junior Pina to a minor league contract. |
| 06/05/26 | Miami Marlins signed free agent RHP Richard Jimenez to a minor league contract. |
| 06/03/26 | RHP Matt Pushard returned to Miami Marlins from St. Louis Cardinals. |
| 06/02/26 | Miami Marlins signed free agent RHP Ricardo Morel to a minor league contract. |
| 06/02/26 | Miami Marlins signed free agent RHP Jaydenn Estanista to a minor league contract. |
| 06/02/26 | Miami Marlins signed free agent RHP Josh Hejka to a minor league contract. |
| 06/02/26 | Miami Marlins optioned RHP Zach Brzykcy to Jacksonville Jumbo Shrimp. |
| 06/02/26 | Miami Marlins recalled RHP Ryan Gusto from Jacksonville Jumbo Shrimp. |
| 06/01/26 | Miami Marlins placed RHP Josh Ekness on the 15-day injured list retroactive to May 29, 2026. Right calf strain. |
| 06/01/26 | Miami Marlins transferred LHP Andrew Nardi from the 15-day injured list to the 60-day injured list. Left rib cage stress reaction. |
| 06/01/26 | Miami Marlins transferred LF Griffin Conine from the 10-day injured list to the 60-day injured list. Left hamstring strain. |
| 06/01/26 | Miami Marlins selected the contract of RHP Zach Brzykcy from Jacksonville Jumbo Shrimp. |
| 06/01/26 | Miami Marlins selected the contract of RHP Tyler Zuber from Jacksonville Jumbo Shrimp. |
| 06/01/26 | Miami Marlins optioned RHP Josh White to Jacksonville Jumbo Shrimp. |