Marlins Roster & Staff
Transactions
| Date | Transaction |
| 11/30/21 | Miami Marlins activated 2B Joey Wendle. |
| 11/30/21 | Miami Marlins activated 2B Joey Wendle. |
| 11/30/21 | CF Lewis Brinson elected free agency. |
| 11/30/21 | Miami Marlins designated CF Lewis Brinson for assignment. |
| 11/30/21 | Tampa Bay Rays traded 2B Joey Wendle to Miami Marlins for CF Kameron Misner. |
| 11/30/21 | Tampa Bay Rays traded 2B Joey Wendle to Miami Marlins for CF Kameron Misner. |
| 11/29/21 | Miami Marlins activated C Jacob Stallings. |
| 11/29/21 | Miami Marlins activated C Jacob Stallings. |
| 11/29/21 | Pittsburgh Pirates traded C Jacob Stallings to Miami Marlins for RHP Zach Thompson, RHP Kyle Nicolas and OF Connor Scott. |
| 11/29/21 | Pittsburgh Pirates traded C Jacob Stallings to Miami Marlins for RHP Zach Thompson, RHP Kyle Nicolas and OF Connor Scott. |
| 11/29/21 | Pittsburgh Pirates traded C Jacob Stallings to Miami Marlins for RHP Zach Thompson, RHP Kyle Nicolas and OF Connor Scott. |
| 11/29/21 | Pittsburgh Pirates traded C Jacob Stallings to Miami Marlins for RHP Zach Thompson, RHP Kyle Nicolas and OF Connor Scott. |
| 11/28/21 | Miami Marlins signed free agent 2B Erik Gonzalez to a minor league contract. |
| 11/28/21 | Miami Marlins signed free agent CF Ray-Patrick Didder to a minor league contract. |
| 11/28/21 | CF Ray-Patrick Didder roster status changed by Miami Marlins. |
| 11/19/21 | OF Brian Miller and assigned to Miami Marlins. |
| 11/19/21 | RHP Jimmy Yacabonis roster status changed by Miami Marlins. |
| 11/19/21 | Miami Marlins signed free agent RHP Jimmy Yacabonis to a minor league contract and invited him to spring training. |
| 11/19/21 | Miami Marlins sent OF Brian Miller outright to Jacksonville Jumbo Shrimp. |
| 11/17/21 | Miami Marlins signed free agent RHP Aneurys Zabala to a minor league contract. |
| 11/14/21 | Tampa Bay Rays traded RHP Louis Head to Miami Marlins for Player To Be Named Later. |
| 11/14/21 | Miami Marlins activated RHP Louis Head. |
| 11/14/21 | Miami Marlins activated RHP Louis Head. |
| 11/05/21 | Miami Marlins activated 3B Brian Anderson from the 60-day injured list. |
| 11/05/21 | Miami Marlins activated 1B Garrett Cooper from the 60-day injured list. |
| 11/05/21 | Miami Marlins activated 2B Jon Berti from the 60-day injured list. |
| 11/05/21 | Miami Marlins activated RHP Cody Poteet from the 60-day injured list. |
| 11/05/21 | Miami Marlins activated 1B Garrett Cooper from the 60-day injured list. |
| 11/05/21 | Miami Marlins activated 1B Garrett Cooper from the 60-day injured list. |
| 11/05/21 | Miami Marlins placed 2B Jon Berti on the 10-day injured list. |
| 11/05/21 | Miami Marlins activated 1B Jesus Aguilar from the 60-day injured list. |
| 11/05/21 | Miami Marlins activated SS Jose Devers from the 60-day injured list. |
| 11/03/21 | C Sandy Leon elected free agency. |
| 11/03/21 | Miami Marlins sent RF Magneuris Sierra outright to Jacksonville Jumbo Shrimp. |