Astros Roster & Staff
Transactions
| Date | Transaction |
| 11/29/11 | Houston Astros signed free agent C Carlos Corporan to a minor league contract and invited him to spring training. |
| 11/18/11 | Houston Astros selected the contract of Paul Clemens from Oklahoma City RedHawks. |
| 11/18/11 | Houston Astros signed free agent RHP Lance Pendleton to a minor league contract and invited him to spring training. |
| 11/16/11 | Houston Astros sent Carlos Corporan outright to Oklahoma City RedHawks. |
| 11/15/11 | Houston Astros signed free agent 3B Scott Moore to a minor league contract and invited him to spring training. |
| 11/15/11 | Houston Astros invited non-roster LHP Xavier Cedeno to spring training. |
| 11/15/11 | Houston Astros invited non-roster RHP Jose Valdez to spring training. |
| 11/14/11 | Houston Astros signed free agent 2B Joe Thurston to a minor league contract and invited him to spring training. |
| 11/12/11 | Houston Astros signed free agent RF Brad Snyder to a minor league contract and invited him to spring training. |
| 11/10/11 | Houston Astros signed free agent LF Travis Buck to a minor league contract and invited him to spring training. |
| 11/10/11 | Houston Astros signed free agent RF Nick Stavinoha to a minor league contract and invited him to spring training. |
| 11/03/11 | Houston Astros claimed LF Brian Bixler off waivers from Washington Nationals. |