Elena Bovina and Justine Henin-Hardenne were the defending champions but none competed this year, as both players decided to priorize the singles competition.
^"2003 Zurich WTA Singles Results". QuickFound - Tennis. 2003. Retrieved 19 November 2017. Kim Cijsters happens to be # 2 at doubles also at this time; the player stopping her from being # 1 at doubles is her partner, Ai Sugiyama, so that is unlikely to change. Kim and Ai won the Zurich doubles title by defeating the other current great team, Virgina Ruano Pascual & Paola Suarez, 7-6(3), 6-2