The 2010 HP Open (also known as the 2010 HP Japan Women's Open Tennis) was a women's tennis tournament played on outdoor hard courts. It was the 2nd edition of the HP Open, and was classified as one of the WTA International tournaments of the 2010 WTA Tour. It was played in Osaka, Japan from October 11 to October 17.

WTA players

Seeds

Other entrants

The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw:

Champions

Singles

🇹🇭 Tamarine Tanasugarn def. 🇯🇵 Kimiko Date-Krumm, 7–5, 6–7(4), 6–1

Doubles

Chang Kai-chen / 🇺🇸 Lilia Osterloh def. 🇯🇵 Shuko Aoyama / 🇯🇵 Rika Fujiwara, 6–0, 6–3