Marlins Roster & Staff
Transactions
| Date | Transaction |
| 05/30/15 | Miami Marlins sent C Jeff Mathis on a rehab assignment to Jacksonville Suns. |
| 05/26/15 | Miami Marlins recalled Jose Urena from New Orleans Zephyrs. |
| 05/26/15 | Miami Marlins placed 1B Michael Morse on the 15-day disabled list retroactive to May 24, 2015. right ring finger sprain |
| 05/24/15 | Miami Marlins sent C Jeff Mathis on a rehab assignment to New Orleans Zephyrs. |
| 05/23/15 | Miami Marlins placed RHP Henderson Alvarez on the 15-day disabled list. Right shoulder inflammation |
| 05/23/15 | Miami Marlins placed RHP Mat Latos on the 15-day disabled list retroactive to May 22, 2015. Left knee inflammation |
| 05/23/15 | Miami Marlins selected the contract of RHP Vin Mazzaro from New Orleans Zephyrs. |
| 05/23/15 | Miami Marlins recalled Andre Rienzo from New Orleans Zephyrs. |
| 05/19/15 | Miami Marlins placed RHP Jarred Cosart on the 15-day disabled list retroactive to May 14, 2015. Vertigo |
| 05/19/15 | Miami Marlins recalled RHP Carter Capps from New Orleans Zephyrs. |
| 05/18/15 | Miami Marlins sent RHP Nick Masset outright to New Orleans Zephyrs. |
| 05/17/15 | Miami Marlins designated Nick Masset for assignment. |
| 05/17/15 | Miami Marlins activated RHP Henderson Alvarez from the 15-day disabled list. |
| 05/12/15 | Miami Marlins sent RHP Henderson Alvarez on a rehab assignment to Jupiter Hammerheads. |
| 05/12/15 | Miami Marlins signed free agent 2B Felix Arosemena to a minor league contract. |
| 05/11/15 | Miami Marlins sent 3B Reid Brignac outright to New Orleans Zephyrs. |
| 05/08/15 | Miami Marlins activated LF Christian Yelich from the 15-day disabled list. |
| 05/08/15 | Miami Marlins designated 3B Reid Brignac for assignment. |
| 05/05/15 | Miami Marlins released C Jarrod Saltalamacchia. |
| 05/03/15 | Miami Marlins sent LF Christian Yelich on a rehab assignment to Jupiter Hammerheads. |