Marlins Roster & Staff
Transactions
| Date | Transaction |
| 03/20/20 | Miami Marlins optioned CF Monte Harrison to Wichita Wind Surge. |
| 03/20/20 | Miami Marlins optioned RHP Nick Neidert to Wichita Wind Surge. |
| 03/10/20 | Miami Marlins optioned 1B Lewin Diaz to Wichita Wind Surge. |
| 03/10/20 | Miami Marlins optioned RF Jesus Sanchez to Wichita Wind Surge. |
| 03/10/20 | Miami Marlins optioned SS Jazz Chisholm to Wichita Wind Surge. |
| 03/06/20 | Miami Marlins optioned RHP Edward Cabrera to Jacksonville Jumbo Shrimp. |
| 03/06/20 | Miami Marlins optioned RHP Jorge Guzman to Wichita Wind Surge. |
| 03/06/20 | Miami Marlins optioned RHP Sixto Sanchez to Wichita Wind Surge. |
| 03/06/20 | Miami Marlins optioned RHP Jordan Holloway to Jacksonville Jumbo Shrimp. |
| 03/06/20 | Miami Marlins optioned RHP Humberto Mejia to Jupiter Hammerheads. |
| 03/04/20 | C Will Banfield assigned to Miami Marlins. |
| 03/04/20 | 2B Justin Twine assigned to Miami Marlins. |
| 03/04/20 | SS Bryson Brigman assigned to Miami Marlins. |
| 03/04/20 | RF Stone Garrett assigned to Miami Marlins. |
| 03/04/20 | 3B Nic Ready assigned to Miami Marlins. |
| 03/04/20 | C J.D. Osborne assigned to Miami Marlins. |
| 03/04/20 | 3B Bubba Hollins assigned to Miami Marlins. |
| 03/04/20 | OF Kameron Misner assigned to Miami Marlins. |
| 03/04/20 | RHP Tyler Stevens assigned to Miami Marlins. |
| 03/04/20 | 2B Riley Mahan assigned to Miami Marlins. |
| 03/04/20 | C Nick Fortes assigned to Miami Marlins. |
| 03/03/20 | SS Joe Dunand assigned to Miami Marlins. |
| 03/02/20 | RHP Parker Bugg assigned to Miami Marlins. |