Marlins Roster & Staff
Transactions
| Date | Transaction |
| 07/31/23 | Miami Marlins activated SS Jazz Chisholm Jr. from the 10-day injured list. |
| 07/31/23 | Miami Marlins optioned SS Garrett Hampson to Jacksonville Jumbo Shrimp. |
| 07/30/23 | Miami Marlins activated RF Avisaíl García from the 10-day injured list. |
| 07/30/23 | Miami Marlins sent SS Jazz Chisholm Jr. on a rehab assignment to Jupiter Hammerheads. |
| 07/30/23 | Miami Marlins optioned OF Dane Myers to Jacksonville Jumbo Shrimp. |
| 07/29/23 | Miami Marlins activated RHP David Robertson. |
| 07/29/23 | Miami Marlins optioned RHP Bryan Hoeing to Jacksonville Jumbo Shrimp. |
| 07/28/23 | Miami Marlins activated RHP Jorge López. |
| 07/28/23 | Miami Marlins activated RHP Jorge López. |
| 07/28/23 | Miami Marlins reassigned RHP David Robertson to the minor leagues. |
| 07/28/23 | Miami Marlins placed RHP Matt Barnes on the 60-day injured list. Left hip impingement. |
| 07/28/23 | New York Mets traded RHP David Robertson to Miami Marlins for 2B Marco Vargas and C Ronald Hernandez. |
| 07/28/23 | New York Mets traded RHP David Robertson to Miami Marlins for 2B Marco Vargas and C Ronald Hernandez. |
| 07/28/23 | New York Mets traded RHP David Robertson to Miami Marlins for 2B Marco Vargas and C Ronald Hernandez. |
| 07/26/23 | Miami Marlins sent RHP Tommy Nance on a rehab assignment to FCL Marlins. |
| 07/26/23 | Miami Marlins sent RHP Tommy Nance on a rehab assignment to FCL Marlins. |
| 07/26/23 | Miami Marlins reassigned RHP Jorge López to the minor leagues. |
| 07/26/23 | TWP Ryan Ignoffo assigned to Miami Marlins. |
| 07/26/23 | Miami Marlins traded RHP Dylan Floro to Minnesota Twins for RHP Jorge López. |
| 07/26/23 | Miami Marlins traded RHP Dylan Floro to Minnesota Twins for RHP Jorge López. |
| 07/25/23 | Miami Marlins sent RF Avisaíl García on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 07/25/23 | Miami Marlins sent LHP Andrew Nardi on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 07/25/23 | |
| 07/25/23 | |
| 07/24/23 | Miami Marlins signed 3B Johnny Olmstead. |
| 07/23/23 | Miami Marlins signed LHP Thomas White. |
| 07/21/23 | Miami Marlins signed RHP Noble Meyer. |
| 07/21/23 | Miami Marlins signed RHP Josh Ekness. |
| 07/21/23 | Miami Marlins signed OF Kemp Alderman. |
| 07/21/23 | Miami Marlins signed RHP Colson Lawrence. |
| 07/21/23 | Miami Marlins sent RF Jerar Encarnación outright to Jacksonville Jumbo Shrimp. |
| 07/20/23 | Miami Marlins signed LHP Kevin Vaupel. |
| 07/20/23 | Miami Marlins signed RHP Xavier Meachem. |
| 07/20/23 | Miami Marlins signed OF Jake DeLeo. |
| 07/19/23 | Miami Marlins signed RHP Jake Brooks. |
| 07/19/23 | Miami Marlins signed 1B Brock Vradenburg. |
| 07/18/23 | Miami Marlins sent RF Avisaíl García on a rehab assignment to Pensacola Blue Wahoos. |
| 07/18/23 | Miami Marlins activated RHP Edward Cabrera from the 15-day injured list. |
| 07/18/23 | Miami Marlins sent RF Avisaíl García on a rehab assignment to Pensacola Blue Wahoos. |
| 07/18/23 | Miami Marlins optioned LHP Robert Garcia to Jacksonville Jumbo Shrimp. |
| 07/15/23 | Miami Marlins signed OF Colby Shade. |
| 07/15/23 | Miami Marlins signed LHP Emmett Olson. |
| 07/15/23 | Miami Marlins signed RHP Nick Maldonado. |
| 07/15/23 | Miami Marlins signed RHP Nigel Belgrave. |
| 07/15/23 | Miami Marlins signed OF Mark Coley II. |
| 07/15/23 | Miami Marlins signed LHP Justin Storm. |
| 07/15/23 | Miami Marlins signed free agent 3B Tony Bullard to a minor league contract. |
| 07/15/23 | Miami Marlins signed free agent 1B Angelo DiSpigna to a minor league contract. |
| 07/15/23 | Miami Marlins signed LHP Jack Sellinger. |
| 07/15/23 | Miami Marlins signed RHP Andrew Lindsey. |
| 07/13/23 | Miami Marlins signed free agent RHP Samiel Carpio to a minor league contract. |
| 07/10/23 | Miami Marlins activated RHP Johnny Cueto from the 60-day injured list. |
| 07/10/23 | Miami Marlins transferred CF Jonathan Davis from the 10-day injured list to the 60-day injured list. Right knee sprain. |
| 07/10/23 | Miami Marlins optioned RHP Sean Reynolds to Jacksonville Jumbo Shrimp. |
| 07/09/23 | Miami Marlins sent RHP Jeff Lindgren outright to Jacksonville Jumbo Shrimp. |
| 07/08/23 | Miami Marlins sent RHP Edward Cabrera on a rehab assignment to Jupiter Hammerheads. |
| 07/07/23 | Miami Marlins designated RHP Jeff Lindgren for assignment. |
| 07/07/23 | Miami Marlins optioned RHP Eury Pérez to Pensacola Blue Wahoos. |
| 07/07/23 | Miami Marlins recalled RHP Sean Reynolds from Jacksonville Jumbo Shrimp. |
| 07/07/23 | Miami Marlins selected the contract of LHP Robert Garcia from Jacksonville Jumbo Shrimp. |
| 07/05/23 | Miami Marlins recalled SS Garrett Hampson from Jacksonville Jumbo Shrimp. |
| 07/04/23 | Miami Marlins placed LHP Andrew Nardi on the 15-day injured list. Left triceps inflammation. |
| 07/04/23 | Miami Marlins recalled RHP George Soriano from Jacksonville Jumbo Shrimp. |
| 07/04/23 | Miami Marlins sent RHP Eli Villalobos outright to Pensacola Blue Wahoos. |
| 07/03/23 | Miami Marlins designated RHP Eli Villalobos for assignment. |
| 07/03/23 | Miami Marlins designated RHP Eli Villalobos for assignment. |
| 07/03/23 | Miami Marlins placed SS Jazz Chisholm Jr. on the 10-day injured list. Left oblique strain. |
| 07/03/23 | Miami Marlins selected the contract of OF Dane Myers from Jacksonville Jumbo Shrimp. |
| 07/03/23 | Miami Marlins sent RHP Archie Bradley outright to Jacksonville Jumbo Shrimp. |
| 07/02/23 | Miami Marlins selected the contract of RHP Jeff Lindgren from Jacksonville Jumbo Shrimp. |
| 07/02/23 | Miami Marlins optioned RHP George Soriano to Jacksonville Jumbo Shrimp. |
| 07/01/23 | Miami Marlins designated RHP Archie Bradley for assignment. |
| 07/01/23 | Miami Marlins recalled RHP George Soriano from Jacksonville Jumbo Shrimp. |