Offseason
- January 7, 2005: Adam Riggs was signed as a Free Agent with the Houston Astros.
- January 7, 2005: Turk Wendell was signed as a Free Agent with the Houston Astros.
- January 23, 2005: John Franco signed as a Free Agent with the Houston Astros.
- February 11, 2005: Trenidad Hubbard was signed as a Free Agent with the Houston Astros.
Read more about this topic: 2005 Houston Astros Season