Marlins Roster & Staff
Transactions
| Date | Transaction |
| 03/30/25 | Miami Marlins placed RHP Jesus Tinoco on the 15-day injured list retroactive to March 28, 2025. Left low back strain. |
| 03/30/25 | Miami Marlins designated RHP Brett de Geus for assignment. |
| 03/30/25 | Miami Marlins optioned RHP Valente Bellozo to Jacksonville Jumbo Shrimp. |
| 03/30/25 | Miami Marlins recalled RHP Luarbert Arias from Jacksonville Jumbo Shrimp. |
| 03/30/25 | Miami Marlins selected the contract of RHP Xzavion Curry from Jacksonville Jumbo Shrimp. |
| 03/28/25 | Miami Marlins sent RHP Seth Martinez outright to Jacksonville Jumbo Shrimp. |
| 03/27/25 | Miami Marlins placed RHP Edward Cabrera on the 15-day injured list retroactive to March 24, 2025. Right middle finger blister. |
| 03/27/25 | Miami Marlins placed RF Jesús Sánchez on the 10-day injured list retroactive to March 24, 2025. Left oblique strain. |
| 03/27/25 | Miami Marlins placed LHP Ryan Weathers on the 15-day injured list retroactive to March 24, 2025. Left flexor muscle strain. |
| 03/27/25 | Miami Marlins placed 3B Connor Norby on the 10-day injured list retroactive to March 24, 2025. Left oblique strain. |
| 03/27/25 | Miami Marlins placed RHP Declan Cronin on the 15-day injured list retroactive to March 24, 2025. Left hip strain. |
| 03/27/25 | Miami Marlins recalled 3B Graham Pauley from Jacksonville Jumbo Shrimp. |
| 03/27/25 | Miami Marlins recalled RHP Valente Bellozo from Jacksonville Jumbo Shrimp. |
| 03/26/25 | Miami Marlins designated RHP Seth Martinez for assignment. |
| 03/26/25 | Philadelphia Phillies traded RHP Tyler Phillips to Miami Marlins for cash. |
| 03/23/25 | SS Starlyn Caba assigned to Miami Marlins. |
| 03/23/25 | RF Jake Thompson assigned to Miami Marlins. |
| 03/23/25 | SS Carter Johnson assigned to Miami Marlins. |
| 03/22/25 | CF Dillon Head assigned to Miami Marlins. |
| 03/22/25 | 1B Torin Montgomery assigned to Miami Marlins. |
| 03/22/25 | C Jeremy Almonte assigned to Miami Marlins. |
| 03/21/25 | RF Danny Gonzalez assigned to Miami Marlins. |
| 03/21/25 | C Nixon Chirinos assigned to Miami Marlins. |
| 03/20/25 | RHP Anderson Pilar returned to Miami Marlins from Atlanta Braves. |
| 03/18/25 | LF Emaarion Boyd assigned to Miami Marlins. |
| 03/17/25 | C Brian Navarreto assigned to Miami Marlins. |
| 03/17/25 | CF Toby Simmons assigned to Miami Marlins. |
| 03/16/25 | Miami Marlins optioned 3B Graham Pauley to Jacksonville Jumbo Shrimp. |
| 03/16/25 | Miami Marlins optioned C Agustin Ramírez to Jacksonville Jumbo Shrimp. |
| 03/15/25 | Miami Marlins placed LHP Andrew Nardi on the 60-day injured list. |
| 03/15/25 | Miami Marlins claimed RHP Seth Martinez off waivers from Seattle Mariners. |
| 03/14/25 | LHP Kevin Vaupel assigned to Miami Marlins. |
| 03/14/25 | Miami Marlins optioned RHP Brett de Geus to Jacksonville Jumbo Shrimp. |
| 03/14/25 | Miami Marlins optioned RHP Valente Bellozo to Jacksonville Jumbo Shrimp. |
| 03/11/25 | 3B Cherif Neymour assigned to Miami Marlins. |
| 03/11/25 | SS Cody Schrier assigned to Miami Marlins. |
| 03/10/25 | 1B Brock Vradenburg assigned to Miami Marlins. |
| 03/10/25 | LHP Jack Sellinger assigned to Miami Marlins. |
| 03/10/25 | RHP Jake Faherty assigned to Miami Marlins. |
| 03/10/25 | RHP Tyler Eckberg assigned to Miami Marlins. |
| 03/09/25 | Miami Marlins signed free agent RHP Lane Ramsey to a minor league contract. |
| 03/09/25 | RHP Josh White assigned to Miami Marlins. |
| 03/09/25 | RHP Josh White roster status changed by Miami Marlins. |
| 03/09/25 | RHP Alex Williams assigned to Miami Marlins. |
| 03/08/25 | CF Jake DeLeo assigned to Miami Marlins. |
| 03/08/25 | 2B Gage Miller assigned to Miami Marlins. |
| 03/08/25 | 2B Josh Zamora assigned to Miami Marlins. |
| 03/08/25 | SS Johnny Olmstead assigned to Miami Marlins. |
| 03/08/25 | RHP Tristan Stevens assigned to Miami Marlins. |
| 03/08/25 | LHP Cade Gibson assigned to Miami Marlins. |
| 03/08/25 | 1B Zach Zubia assigned to Miami Marlins. |
| 03/08/25 | Miami Marlins optioned RHP Adam Mazur to Jacksonville Jumbo Shrimp. |
| 03/08/25 | Miami Marlins optioned SS Max Acosta to Jacksonville Jumbo Shrimp. |
| 03/08/25 | Miami Marlins optioned LHP Dax Fulton to Pensacola Blue Wahoos. |
| 03/08/25 | Miami Marlins optioned 3B Deyvison De Los Santos to Jacksonville Jumbo Shrimp. |
| 03/08/25 | Miami Marlins optioned RHP Luarbert Arias to Jacksonville Jumbo Shrimp. |
| 03/08/25 | Miami Marlins optioned SS Jared Serna to Pensacola Blue Wahoos. |
| 03/06/25 | SS Harrison Spohn assigned to Miami Marlins. |
| 03/06/25 | LF Dalvy Rosario assigned to Miami Marlins. |
| 03/06/25 | SS Harrison Spohn assigned to Miami Marlins. |
| 03/05/25 | 1B Eric Rataczak assigned to Miami Marlins. |
| 03/04/25 | Miami Marlins signed free agent C Brian Navarreto. |
| 03/03/25 | LHP Emmett Olson assigned to Miami Marlins. |
| 03/03/25 | OF Micah McDowell assigned to Miami Marlins. |
| 03/03/25 | SS Echedry Vargas assigned to Miami Marlins. |
| 03/03/25 | RF Brett Roberts assigned to Miami Marlins. |
| 03/03/25 | RHP Jacob Miller assigned to Miami Marlins. |
| 03/03/25 | Miami Marlins optioned CF Victor Mesa Jr. to Jacksonville Jumbo Shrimp. |
| 03/02/25 | C Nestor Rios assigned to Miami Marlins. |
| 03/02/25 | Seattle Mariners claimed RHP Seth Martinez off waivers from Miami Marlins. |
| 03/01/25 | RHP Jake Brooks assigned to Miami Marlins. |
| 03/01/25 | RHP Luke Lashutka assigned to Miami Marlins. |
| 03/01/25 | C Victor Ortega assigned to Miami Marlins. |
| 03/01/25 | RHP Ike Buxton assigned to Miami Marlins. |