Offseason
- December 9, 2004: Jermaine Dye was signed as a free agent by the White Sox.
- December 9, 2004: Dustin Hermanson was signed as a free agent by the White Sox.
- December 13, 2004: Carlos Lee was traded by the White Sox to the Milwaukee Brewers for Scott Podsednik, Luis Vizcaíno and a player to be named later. The Brewers completed the deal by sending Travis Hinton (minors) to the White Sox on January 10, 2005.
- December 17, 2004: Bobby Jenks was claimed off waivers by the White Sox from the Los Angeles Angels of Anaheim.
- January 3, 2005: Orlando Hernández was signed as a free agent by the White Sox.
- January 6, 2005: A. J. Pierzynski was signed as a free agent by the White Sox.
- January 27, 2005: Tadahito Iguchi was signed as a free agent by the White Sox.
Read more about this topic: 2005 Chicago White Sox Season