Astros Roster & Staff
Transactions
| Date | Transaction |
| 11/25/09 | Houston Astros sent RHP Brad James outright to Round Rock Express. |
| 11/20/09 | Houston Astros signed free agent Jose Valdez. |
| 11/20/09 | Houston Astros selected the contract of Matt Nevarez from Lexington Legends. |
| 11/20/09 | Houston Astros selected the contract of Evan Englebrook from Corpus Christi Hooks. |
| 11/20/09 | Houston Astros selected the contract of Henry Villar from Lexington Legends. |
| 11/12/09 | Houston Astros signed free agent RHP Ben Paxton to a minor league contract. |
| 11/09/09 | RHP Jose Valverde elected free agency. |
| 11/06/09 | 3B Aaron Boone roster status changed by Houston Astros. |
| 11/06/09 | RHP LaTroy Hawkins elected free agency. |
| 11/06/09 | SS Miguel Tejada elected free agency. |
| 11/05/09 | Houston Astros selected the contract of Wladimir Sutil from Corpus Christi Hooks. |
| 11/05/09 | LF Jason Michaels elected free agency. |
| 11/05/09 | LHP Mike Hampton elected free agency. |
| 11/05/09 | LF Darin Erstad elected free agency. |
| 11/05/09 | Houston Astros selected the contract of Fernando Abad from Corpus Christi Hooks. |