Marlins Roster & Staff
Transactions
| Date | Transaction |
| 09/28/23 | Miami Marlins activated LHP Tanner Scott from the paternity list. |
| 09/28/23 | Miami Marlins optioned LHP Enmanuel De Jesus to Jacksonville Jumbo Shrimp. |
| 09/26/23 | Miami Marlins activated RHP Huascar Brazoban from the 15-day injured list. |
| 09/26/23 | Miami Marlins placed LHP Tanner Scott on the paternity list. |
| 09/26/23 | Miami Marlins sent RHP Chi Chi González outright to Jacksonville Jumbo Shrimp. |
| 09/26/23 | Miami Marlins optioned RHP Jeff Lindgren to Jacksonville Jumbo Shrimp. |
| 09/25/23 | Miami Marlins recalled LHP Enmanuel De Jesus from Jacksonville Jumbo Shrimp. |
| 09/25/23 | Miami Marlins optioned RHP Jeff Lindgren to Jacksonville Jumbo Shrimp. |
| 09/23/23 | Miami Marlins activated RHP Jeff Lindgren. |
| 09/23/23 | Miami Marlins placed RHP Eury Pérez on the 15-day injured list retroactive to September 21, 2023. Left SI joint inflammation. |
| 09/23/23 | Miami Marlins sent RHP Chi Chi González outright to Jacksonville Jumbo Shrimp. |
| 09/23/23 | Miami Marlins selected the contract of RHP Jeff Lindgren from Jacksonville Jumbo Shrimp. |
| 09/21/23 | Miami Marlins sent RHP Huascar Brazoban on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/21/23 | Miami Marlins sent RHP Huascar Brazoban on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/21/23 | Miami Marlins sent RHP Sandy Alcantara on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/20/23 | Miami Marlins activated LHP Matt Moore. |
| 09/20/23 | Miami Marlins designated RHP Chi Chi González for assignment. |
| 09/19/23 | Miami Marlins placed RHP Tommy Nance on the 60-day injured list. Left oblique strain. |
| 09/19/23 | Miami Marlins recalled RHP Tommy Nance from Jacksonville Jumbo Shrimp. |
| 09/19/23 | Miami Marlins claimed LHP Matt Moore off waivers from Cleveland Guardians. |
| 09/17/23 | Miami Marlins activated RF Jorge Soler from the 10-day injured list. |
| 09/17/23 | Miami Marlins activated RF Jorge Soler from the 10-day injured list. |
| 09/17/23 | Miami Marlins selected the contract of RHP Chi Chi González from Jacksonville Jumbo Shrimp. |
| 09/17/23 | Miami Marlins optioned OF Dane Myers to Jacksonville Jumbo Shrimp. |
| 09/17/23 | Miami Marlins optioned LHP Josh Simpson to Jacksonville Jumbo Shrimp. |
| 09/14/23 | Miami Marlins sent LHP Daniel Castano outright to Jacksonville Jumbo Shrimp. |
| 09/12/23 | Miami Marlins designated LHP Daniel Castano for assignment. |
| 09/12/23 | Miami Marlins recalled LHP Josh Simpson from Jacksonville Jumbo Shrimp. |
| 09/10/23 | Miami Marlins selected the contract of LHP Daniel Castano from Jacksonville Jumbo Shrimp. |
| 09/10/23 | Miami Marlins optioned LHP Enmanuel De Jesus to Jacksonville Jumbo Shrimp. |
| 09/10/23 | Miami Marlins sent LHP Devin Smeltzer outright to Jacksonville Jumbo Shrimp. |
| 09/08/23 | Miami Marlins designated LHP Devin Smeltzer for assignment. |
| 09/08/23 | Miami Marlins selected the contract of LHP Enmanuel De Jesus from Jacksonville Jumbo Shrimp. |
| 09/08/23 | Miami Marlins sent RHP Geoff Hartlieb outright to Jacksonville Jumbo Shrimp. |
| 09/06/23 | Miami Marlins designated RHP Geoff Hartlieb for assignment. |
| 09/06/23 | Miami Marlins placed RF Jorge Soler on the 10-day injured list. Right oblique strain. |
| 09/06/23 | Miami Marlins placed RHP Sandy Alcantara on the 15-day injured list retroactive to September 4, 2023. |
| 09/06/23 | Miami Marlins recalled OF Dane Myers from Jacksonville Jumbo Shrimp. |
| 09/06/23 | Miami Marlins recalled RHP Edward Cabrera from Jacksonville Jumbo Shrimp. |
| 09/06/23 | Miami Marlins selected the contract of LHP Devin Smeltzer from Jacksonville Jumbo Shrimp. |
| 09/02/23 | Miami Marlins activated RHP Johnny Cueto from the 15-day injured list. |
| 09/02/23 | Baltimore Orioles claimed RHP Jorge López off waivers from Miami Marlins. |
| 09/01/23 | Miami Marlins recalled RHP Geoff Hartlieb from Jacksonville Jumbo Shrimp. |
| 09/01/23 | Miami Marlins recalled SS Xavier Edwards from Jacksonville Jumbo Shrimp. |