D-backs Roster & Staff
Transactions
| Date | Transaction |
| 07/31/11 | Arizona Diamondbacks signed free agent RHP Brian Stokes to a minor league contract. |
| 07/31/11 | Oakland Athletics traded RHP Brad Ziegler to Arizona Diamondbacks for 1B Brandon Allen and Jordan Norberto. |
| 07/31/11 | Oakland Athletics traded RHP Brad Ziegler to Arizona Diamondbacks for 1B Brandon Allen and Jordan Norberto. |
| 07/31/11 | Oakland Athletics traded RHP Brad Ziegler to Arizona Diamondbacks for 1B Brandon Allen and Jordan Norberto. |
| 07/30/11 | Arizona Diamondbacks placed LHP Alberto Castillo on the 15-day disabled list. Left Shoulder Tendonitis |
| 07/30/11 | South Bend Silver Hawks Traded SS Zach Walters to Potomac Nationals and Washington Nationals Traded RHP Jason Marquis to Arizona Diamondbacks. |
| 07/30/11 | Ryan Cook roster status changed by Arizona Diamondbacks. |
| 07/30/11 | Arizona Diamondbacks recalled Ryan Cook from Reno Aces. |
| 07/30/11 | Arizona Diamondbacks transferred SS Stephen Drew from the 15-day disabled list to the 60-day disabled list. |
| 07/27/11 | OF Michael Restovich assigned to Reno Aces from Arizona Diamondbacks. |
| 07/27/11 | Chicago White Sox traded Michael Restovich to Arizona Diamondbacks. |
| 07/26/11 | Arizona Diamondbacks selected the contract of Collin Cowgill from Reno Aces. |
| 07/26/11 | Arizona Diamondbacks activated RHP J.J. Putz from the 15-day disabled list. |
| 07/26/11 | Arizona Diamondbacks placed 1B Geoff Blum on the 15-day disabled list retroactive to July 25, 2011. Fractured right pinkie finger. |
| 07/25/11 | Arizona Diamondbacks signed RHP Trevor Bauer. |
| 07/25/11 | Arizona Diamondbacks signed free agent SS Angel Berroa to a minor league contract. |
| 07/25/11 | Arizona Diamondbacks optioned Ryan Cook to Reno Aces. |
| 07/24/11 | Arizona Diamondbacks released LF Wily Mo Pena. |
| 07/21/11 | Arizona Diamondbacks selected the contract of 3B Cody Ransom from Reno Aces. |
| 07/21/11 | Arizona Diamondbacks placed SS Stephen Drew on the 15-day disabled list. Fractured right ankle |
| 07/20/11 | Arizona Diamondbacks optioned RHP Barry Enright to Reno Aces. |
| 07/20/11 | Arizona Diamondbacks selected the contract of Ryan Cook from Mobile BayBears. |
| 07/20/11 | Arizona Diamondbacks recalled Bryan Shaw from Reno Aces. |
| 07/20/11 | Arizona Diamondbacks sent RHP Yhency Brazoban outright to Reno Aces. |
| 07/19/11 | Arizona Diamondbacks recalled Barry Enright from Reno Aces. |
| 07/19/11 | Arizona Diamondbacks released RHP Aaron Heilman. |
| 07/18/11 | OF Breland Brown assigned to Missoula Osprey from Arizona Diamondbacks. |
| 07/17/11 | Arizona Diamondbacks signed free agent OF Breland Brown to a minor league contract. |
| 07/15/11 | Jake Williams assigned to AZL D-backs from Arizona Diamondbacks. |
| 07/15/11 | Arizona Diamondbacks signed free agent RHP Adam Osteen to a minor league contract. |
| 07/15/11 | Arizona Diamondbacks activated 1B Geoff Blum from the 15-day disabled list. |
| 07/15/11 | Arizona Diamondbacks designated LF Wily Mo Pena for assignment. |
| 07/15/11 | Arizona Diamondbacks sent 1B Juan Miranda outright to Reno Aces. |
| 07/15/11 | Arizona Diamondbacks recalled Brandon Allen from Reno Aces. |
| 07/14/11 | Geordy Parra assigned to DSL Diamondbacks from Arizona Diamondbacks. |
| 07/14/11 | Arizona Diamondbacks signed 1B Jake Williams. |
| 07/13/11 | Arizona Diamondbacks signed RHP Geordy Parra. |
| 07/07/11 | Arizona Diamondbacks signed free agent SS Jose Jordan to a minor league contract. |
| 07/06/11 | D.J. Johnson assigned to Missoula Osprey from Arizona Diamondbacks. |
| 07/05/11 | Arizona Diamondbacks signed free agent RHP D.J. Johnson to a minor league contract. |
| 07/04/11 | Arizona Diamondbacks signed free agent C Omar Andujar to a minor league contract. |
| 07/01/11 | Arizona Diamondbacks placed RHP J.J. Putz on the 15-day disabled list retroactive to June 29, 2011. Right elbow tendinitis |
| 07/01/11 | Arizona Diamondbacks selected the contract of Sean Burroughs from Reno Aces. |
| 07/01/11 | Sam Demel roster status changed by Arizona Diamondbacks. |