D-backs Roster & Staff
Transactions
| Date | Transaction |
| 04/30/11 | Arizona Diamondbacks traded John Hester to Baltimore Orioles. |
| 04/25/11 | Arizona Diamondbacks selected the contract of SS Josh Wilson from Reno Aces. |
| 04/25/11 | Arizona Diamondbacks placed LF Willie Bloomquist on the 15-day disabled list retroactive to April 22, 2011. strained right hamstring |
| 04/15/11 | Arizona Diamondbacks recalled RHP Josh Collmenter from Reno Aces. |
| 04/15/11 | Arizona Diamondbacks placed RHP Aaron Heilman on the 15-day disabled list retroactive to April 14, 2011. right shoulder tendinitis |
| 04/13/11 | Arizona Diamondbacks optioned Kam Mickolio to Reno Aces. |
| 04/13/11 | Arizona Diamondbacks recalled Esmerling Vasquez from Reno Aces. |
| 04/08/11 | Arizona Diamondbacks signed free agent LHP Ron Mahay to a minor league contract. |
| 04/07/11 | Micah Owings assigned to Reno Aces from Arizona Diamondbacks. |
| 04/06/11 | Wily Mo Pena assigned to Reno Aces from Arizona Diamondbacks. |
| 04/06/11 | Cody Ransom assigned to Reno Aces from Arizona Diamondbacks. |
| 04/01/11 | Arizona Diamondbacks signed free agent SS Josh Wilson to a minor league contract. |