Marlins Roster & Staff
Transactions
| Date | Transaction |
| 06/30/25 | Miami Marlins signed free agent RHP Ramon Sanchez to a minor league contract. |
| 06/30/25 | Miami Marlins signed free agent 2B Jose Rivera to a minor league contract. |
| 06/30/25 | Miami Marlins signed free agent RHP Richard Jimenez to a minor league contract. |
| 06/30/25 | Miami Marlins optioned 2B Jack Winkler to Jacksonville Jumbo Shrimp. |
| 06/27/25 | Miami Marlins signed free agent OF Samuel Estevez to a minor league contract. |
| 06/26/25 | Miami Marlins sent CF Derek Hill on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 06/26/25 | Miami Marlins sent CF Derek Hill on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 06/26/25 | Miami Marlins signed free agent RHP Morgan McSweeney to a minor league contract. |
| 06/24/25 | RHP Robinson Piña roster status changed by Miami Marlins. |
| 06/24/25 | Miami Marlins signed free agent RHP Luis Gomez to a minor league contract. |
| 06/24/25 | Toronto Blue Jays traded RHP Colby Martin to Miami Marlins for RHP Robinson Piña. |
| 06/24/25 | Toronto Blue Jays traded RHP Colby Martin to Miami Marlins for RHP Robinson Piña. |
| 06/23/25 | Minnesota Twins claimed RHP Connor Gillispie off waivers from Miami Marlins. |
| 06/21/25 | Miami Marlins designated RHP Robinson Piña for assignment. |
| 06/21/25 | Miami Marlins selected the contract of LHP Josh Simpson from Jacksonville Jumbo Shrimp. |
| 06/19/25 | Miami Marlins designated RHP Connor Gillispie for assignment. |
| 06/19/25 | Miami Marlins selected the contract of RHP Robinson Piña from Jacksonville Jumbo Shrimp. |
| 06/19/25 | Miami Marlins sent RHP Luarbert Arias outright to Jacksonville Jumbo Shrimp. |
| 06/19/25 | Miami Marlins sent RHP Luarbert Arias outright to Jacksonville Jumbo Shrimp. |
| 06/19/25 | Miami Marlins optioned RHP Adam Mazur to Jacksonville Jumbo Shrimp. |
| 06/18/25 | Miami Marlins recalled RHP Adam Mazur from Jacksonville Jumbo Shrimp. |
| 06/18/25 | Miami Marlins optioned RHP Freddy Tarnok to Jacksonville Jumbo Shrimp. |
| 06/17/25 | Miami Marlins sent C Rob Brantly on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 06/15/25 | Miami Marlins designated RHP Luarbert Arias for assignment. |
| 06/15/25 | Miami Marlins optioned LHP Anthony Veneziano to Jacksonville Jumbo Shrimp. |
| 06/15/25 | Miami Marlins selected the contract of RHP Freddy Tarnok from Jacksonville Jumbo Shrimp. |
| 06/12/25 | Miami Marlins signed free agent IF Wanderlin Padilla to a minor league contract. |
| 06/12/25 | Miami Marlins signed free agent SS Rendy Naveo to a minor league contract. |
| 06/12/25 | Miami Marlins signed free agent SS David Shirley to a minor league contract. |
| 06/10/25 | Miami Marlins recalled RHP Lake Bachar from Jacksonville Jumbo Shrimp. |
| 06/09/25 | Miami Marlins activated RHP Eury Pérez from the 60-day injured list. |
| 06/09/25 | Miami Marlins placed LHP Ryan Weathers on the 60-day injured list. Left lat strain. |
| 06/09/25 | Miami Marlins optioned RHP Connor Gillispie to Jacksonville Jumbo Shrimp. |
| 06/07/25 | Miami Marlins optioned RHP George Soriano to Jacksonville Jumbo Shrimp. |
| 06/07/25 | Miami Marlins recalled RHP Connor Gillispie from Jacksonville Jumbo Shrimp. |
| 06/06/25 | Miami Marlins signed free agent OF Grant Richardson to a minor league contract. |
| 06/06/25 | Miami Marlins placed RHP Jesus Tinoco on the 15-day injured list retroactive to June 3, 2025. Right forearm strain. |
| 06/06/25 | Miami Marlins recalled LHP Anthony Veneziano from Jacksonville Jumbo Shrimp. |
| 06/03/25 | Miami Marlins placed RHP Max Meyer on the 15-day injured list. Left hip impingement. |
| 06/03/25 | Miami Marlins recalled RHP George Soriano from Jacksonville Jumbo Shrimp. |
| 06/02/25 | Pittsburgh Pirates claimed 2B Ronny Simon off waivers from Miami Marlins. |
| 06/02/25 | Miami Marlins sent 1B Matt Mervis outright to Jacksonville Jumbo Shrimp. |
| 06/01/25 | 2B Ronny Simon roster status changed by Miami Marlins. |