See main article: 2004 Swisscom Challenge.
Kim Clijsters and Ai Sugiyama were the defending champions, but none competed this year. Clijsters was injured on her left wrist,[1] while Sugiyama decided to focus on the singles tournament.
Cara Black and Rennae Stubbs won the title by defeating Virginia Ruano Pascual and Paola Suárez 6–4, 6–4 in the final.