Marlins Roster & Staff
Transactions
| Date | Transaction |
| 08/31/25 | Miami Marlins placed CF Dane Myers on the 10-day injured list. Right oblique strain. |
| 08/31/25 | Miami Marlins placed RHP Ryan Gusto on the 15-day injured list retroactive to August 28, 2025. Right shoulder impingement. |
| 08/31/25 | Miami Marlins recalled RHP Freddy Tarnok from Jacksonville Jumbo Shrimp. |
| 08/31/25 | Miami Marlins recalled CF Victor Mesa Jr. from Jacksonville Jumbo Shrimp. |
| 08/30/25 | Miami Marlins sent LHP Ryan Weathers on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 08/30/25 | Miami Marlins placed RHP Tyler Zuber on the 15-day injured list. Right lat strain. |
| 08/30/25 | Miami Marlins sent LHP Ryan Weathers on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 08/30/25 | Miami Marlins sent LHP Ryan Weathers on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 08/30/25 | Miami Marlins recalled RHP George Soriano from Jacksonville Jumbo Shrimp. |
| 08/29/25 | Miami Marlins activated 3B Connor Norby from the 10-day injured list. |
| 08/29/25 | Miami Marlins optioned SS Maximo Acosta to Jacksonville Jumbo Shrimp. |
| 08/28/25 | Miami Marlins recalled RHP Adam Mazur from Jacksonville Jumbo Shrimp. |
| 08/28/25 | Miami Marlins optioned RHP Freddy Tarnok to Jacksonville Jumbo Shrimp. |
| 08/27/25 | Miami Marlins placed RHP Janson Junk on the 15-day injured list retroactive to August 24, 2025. Right ulnar nerve irritation. |
| 08/27/25 | Miami Marlins recalled RHP Freddy Tarnok from Jacksonville Jumbo Shrimp. |
| 08/27/25 | Miami Marlins optioned LHP Josh Simpson to Jacksonville Jumbo Shrimp. |
| 08/27/25 | Miami Marlins selected the contract of RHP Seth Martinez from Jacksonville Jumbo Shrimp. |
| 08/22/25 | Miami Marlins recalled RHP Ryan Gusto from Jacksonville Jumbo Shrimp. |
| 08/21/25 | Atlanta Braves claimed RHP Cal Quantrill off waivers from Miami Marlins. |
| 08/20/25 | Miami Marlins sent 3B Connor Norby on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 08/19/25 | Miami Marlins placed RHP Anthony Bender on the 15-day injured list retroactive to August 18, 2025. |
| 08/19/25 | Miami Marlins recalled LHP Cade Gibson from Jacksonville Jumbo Shrimp. |
| 08/18/25 | Miami Marlins placed 3B Graham Pauley on the 10-day injured list retroactive to August 17, 2025. Right oblique strain. |
| 08/18/25 | Miami Marlins placed RHP Anthony Bender on the 15-day injured list. Right tibial stress reaction. |
| 08/18/25 | Miami Marlins recalled SS Maximo Acosta from Jacksonville Jumbo Shrimp. |
| 08/17/25 | Miami Marlins placed LF Kyle Stowers on the 10-day injured list. Left oblique strain. |
| 08/17/25 | Miami Marlins recalled LF Joey Wiemer from Jacksonville Jumbo Shrimp. |
| 08/12/25 | Miami Marlins activated RHP Anthony Bender from the paternity list. |
| 08/11/25 | Miami Marlins signed free agent RHP Ricardo Arredondo to a minor league contract. |
| 08/11/25 | Miami Marlins optioned RHP George Soriano to Jacksonville Jumbo Shrimp. |
| 08/10/25 | Miami Marlins optioned RHP Ryan Gusto to Jacksonville Jumbo Shrimp. |
| 08/09/25 | Miami Marlins placed RHP Anthony Bender on the paternity list. |
| 08/09/25 | Miami Marlins recalled RHP Tyler Zuber from Jacksonville Jumbo Shrimp. |
| 08/09/25 | Miami Marlins recalled RHP Ryan Gusto from Jacksonville Jumbo Shrimp. |
| 08/08/25 | Miami Marlins optioned LHP Cade Gibson to Jacksonville Jumbo Shrimp. |
| 08/08/25 | Miami Marlins recalled RHP George Soriano from Jacksonville Jumbo Shrimp. |
| 08/06/25 | Miami Marlins sent 2B Jack Winkler outright to Jacksonville Jumbo Shrimp. |
| 08/04/25 | Miami Marlins activated CF Derek Hill from the 10-day injured list. |
| 08/04/25 | Miami Marlins designated 2B Jack Winkler for assignment. |
| 08/04/25 | Miami Marlins traded RHP Austin Roberts to Milwaukee Brewers for cash. |
| 08/04/25 | St. Louis Cardinals claimed LHP Anthony Veneziano off waivers from Miami Marlins. |
| 08/04/25 | Miami Marlins claimed LF Joey Wiemer off waivers from Kansas City Royals. |
| 08/04/25 | Miami Marlins optioned LF Joey Wiemer to Jacksonville Jumbo Shrimp. |
| 08/03/25 | Miami Marlins traded LHP John Rooney to Houston Astros for cash. |
| 08/02/25 | Miami Marlins sent CF Derek Hill on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 08/01/25 | Miami Marlins designated LHP Anthony Veneziano for assignment. |
| 08/01/25 | Miami Marlins optioned RHP Ryan Gusto to Jacksonville Jumbo Shrimp. |
| 08/01/25 | Miami Marlins selected the contract of CF Jakob Marsee from Jacksonville Jumbo Shrimp. |