The 2004 JPMorgan Chase Open was a women's tennis tournament played on outdoor hard courts in Carson, California in the United States that was part of the Tier II of the 2004 WTA Tour.

It was the 31st edition of the tournament and held from July 19 through July 25, 2004.

Third-seeded Lindsay Davenport won the singles title and earned $93,000 first-prize money.

[1] Lindsay Davenport defeated Serena Williams, 6–1, 6–3 Nadia Petrova / Meghann Shaughnessy defeated Conchita Martínez / Virginia Ruano Pascual, 6–7(2–7), 6–4, 6–3