Astros Roster & Staff
Transactions
| Date | Transaction |
| 06/30/09 | Houston Astros activated LHP Mike Hampton from the 15-day disabled list. |
| 06/30/09 | Houston Astros signed LHP Dallas Keuchel. |
| 06/30/09 | Houston Astros signed RHP Max Fearnow. |
| 06/30/09 | Houston Astros optioned Wesley Wright to Round Rock Express. |
| 06/29/09 | Houston Astros sent Tyler Lumsden outright to Round Rock Express. |
| 06/28/09 | Houston Astros optioned Edwin Maysonet to Round Rock Express. |
| 06/28/09 | Houston Astros activated 3B Geoff Blum from the 15-day disabled list. |
| 06/27/09 | Jiovanni Mier assigned to Greeneville Astros from Houston Astros. |
| 06/27/09 | Felipe Paulino roster status changed by Houston Astros. |
| 06/27/09 | Houston Astros designated Brandon Backe for assignment. |
| 06/26/09 | Houston Astros signed Jiovanni Mier. |
| 06/25/09 | Houston Astros sent 3B Geoff Blum on a rehab assignment to Round Rock Express. |
| 06/23/09 | 3B Erik Castro assigned to Tri-City ValleyCats from Houston Astros. |
| 06/23/09 | Michael Schurz assigned to GCL Astros from Houston Astros. |
| 06/23/09 | Telvin Nash assigned to GCL Astros from Houston Astros. |
| 06/23/09 | 3B Brandon Wilkerson assigned to GCL Astros from Houston Astros. |
| 06/23/09 | Ronald Sanchez assigned to GCL Astros from Houston Astros. |
| 06/23/09 | Euris Quezada assigned to GCL Astros from Houston Astros. |
| 06/23/09 | Juan Minaya assigned to GCL Astros from Houston Astros. |
| 06/23/09 | Mark Jones assigned to GCL Astros from Houston Astros. |
| 06/23/09 | LHP Spencer Hylander assigned to GCL Astros from Houston Astros. |
| 06/23/09 | RHP Enmanuel Cedano assigned to GCL Astros from Houston Astros. |
| 06/23/09 | Tanner Bushue assigned to GCL Astros from Houston Astros. |
| 06/23/09 | OF Geber Suniaga assigned to GCL Astros from Houston Astros. |
| 06/23/09 | Garen Wright assigned to GCL Astros from Houston Astros. |
| 06/21/09 | Houston Astros signed RHP Juan Minaya. |
| 06/21/09 | Houston Astros signed RHP Euris Quezada. |
| 06/21/09 | Houston Astros signed RHP Michael Schurz. |
| 06/21/09 | Houston Astros signed IF Brandon Wilkerson. |
| 06/21/09 | Houston Astros signed RHP Enmanuel Cedano. |
| 06/21/09 | Houston Astros signed LHP Spencer Hylander. |
| 06/21/09 | OF Geber Suniaga assigned to Houston Astros. |
| 06/21/09 | Houston Astros signed OF Garen Wright. |
| 06/21/09 | Houston Astros signed 3B Erik Castro. |
| 06/20/09 | RHP Geoff Geary roster status changed by Houston Astros. |
| 06/19/09 | Jonathan Meyer assigned to Greeneville Astros from Houston Astros. |
| 06/19/09 | J.D. Martinez assigned to Greeneville Astros from Houston Astros. |
| 06/19/09 | Aaron Bray assigned to Greeneville Astros from Houston Astros. |
| 06/19/09 | OF Ryan Humphrey assigned to Greeneville Astros from Houston Astros. |
| 06/19/09 | B.J. Hyatt assigned to Greeneville Astros from Houston Astros. |
| 06/19/09 | Grant Hogue assigned to Greeneville Astros from Houston Astros. |
| 06/19/09 | Bubby Williams assigned to Greeneville Astros from Houston Astros. |
| 06/19/09 | Jake Goebbert assigned to Tri-City ValleyCats from Houston Astros. |
| 06/19/09 | Scott Migl assigned to Greeneville Astros from Houston Astros. |
| 06/19/09 | Daniel Sarisky assigned to Greeneville Astros from Houston Astros. |
| 06/19/09 | Travis Smink assigned to Greeneville Astros from Houston Astros. |
| 06/18/09 | RF Sean Barksdale assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | Jake Goebbert assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | Brian Kemp assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | Brandon Wikoff assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | Justin Harper assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | David Berner assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | Brandt Walker assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | Ben Orloff assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | 1B Nick Stanley assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | Robert Donovan assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | Barry Butera assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | Brenden Stines assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | LHP Mike Modica assigned to Tri-City ValleyCats from Houston Astros. |
| 06/18/09 | RHP James MacDonald assigned to Tri-City ValleyCats from Houston Astros. |
| 06/17/09 | Houston Astros signed Jonathan Meyer. |
| 06/17/09 | Houston Astros placed LHP Mike Hampton on the 15-day disabled list retroactive to June 14, 2009. Strained left groin. |
| 06/17/09 | Houston Astros signed Scott Migl. |
| 06/17/09 | Houston Astros signed Daniel Sarisky. |
| 06/17/09 | Houston Astros recalled Wesley Wright from Round Rock Express. |
| 06/16/09 | Houston Astros signed Brandt Walker. |
| 06/16/09 | Houston Astros signed David Berner. |
| 06/16/09 | Houston Astros placed 3B Geoff Blum on the 15-day disabled list retroactive to June 13, 2009. Strained left hamstring |
| 06/16/09 | Houston Astros activated 2B Kazuo Matsui from the 15-day disabled list. |
| 06/15/09 | Houston Astros signed Jake Goebbert. |
| 06/15/09 | Houston Astros signed Sean Barksdale. |
| 06/15/09 | Houston Astros signed 1B Telvin Nash. |
| 06/15/09 | Houston Astros signed C Bubby Williams. |
| 06/15/09 | Houston Astros signed SS Ben Orloff. |
| 06/15/09 | Houston Astros signed SS Brandon Wikoff. |
| 06/15/09 | Houston Astros signed RHP B.J. Hyatt. |
| 06/15/09 | Houston Astros signed RHP Tanner Bushue. |
| 06/15/09 | Houston Astros signed 3B Aaron Bray. |
| 06/15/09 | Houston Astros signed RHP Justin Harper. |
| 06/15/09 | Houston Astros signed RHP Brenden Stines. |
| 06/15/09 | Houston Astros signed LHP Travis Smink. |
| 06/15/09 | Houston Astros signed 1B Nick Stanley. |
| 06/15/09 | Houston Astros signed LHP Mike Modica. |
| 06/15/09 | Houston Astros signed RHP Robert Donovan. |
| 06/15/09 | Houston Astros signed RHP Mark Jones. |
| 06/15/09 | Houston Astros signed 2B Barry Butera. |
| 06/15/09 | Houston Astros signed OF J.D. Martinez. |
| 06/15/09 | Houston Astros signed OF Brian Kemp. |
| 06/15/09 | Houston Astros signed RHP James MacDonald. |
| 06/15/09 | Houston Astros signed 1B Ronald Sanchez. |
| 06/15/09 | Houston Astros signed OF Ryan Humphrey. |
| 06/15/09 | Houston Astros signed OF Grant Hogue. |
| 06/13/09 | Houston Astros activated RHP Jose Valverde from the 15-day disabled list. |
| 06/13/09 | Houston Astros optioned Wesley Wright to Round Rock Express. |
| 06/12/09 | Houston Astros placed RHP Felipe Paulino on the 15-day disabled list retroactive to June 8, 2009. Strained right groin. |
| 06/12/09 | Houston Astros recalled Wesley Wright from Round Rock Express. |
| 06/10/09 | Houston Astros sent 2B Kazuo Matsui on a rehab assignment to Corpus Christi Hooks. |
| 06/10/09 | Geoff Geary roster status changed by Houston Astros. |
| 06/10/09 | Houston Astros sent RHP Geoff Geary outright to Round Rock Express. |
| 06/10/09 | Houston Astros sent RHP Jose Valverde on a rehab assignment to Corpus Christi Hooks. |