See main article: 2004 Pacific Life Open.
Justine Henin-Hardenne defeated Lindsay Davenport in the final, 6 - 1, 6 - 4 to win the women's singles tennis title at the 2004 Indian Wells Masters.
Kim Clijsters was the defending champion, but withdrew before her third round match against Laura Granville due to a wrist injury that would ultimately sideline her for the remainder of the season.
All seeded players received a bye for the first round.