The 2009 HP Open (also known as the 2009 HP Japan Women's Open Tennis) was a women's tennis tournament played on outdoor hard courts. It was the 1st edition of the HP Open, and was classified as an WTA International tournaments of the 2009 WTA Tour. It was played in Osaka, Japan.

Finals

Singles

🇦🇺 Samantha Stosur defeated 🇮🇹 Francesca Schiavone 7–5, 6–1

Doubles

Chuang Chia-jung / 🇺🇸 Lisa Raymond defeated Chanelle Scheepers / 🇺🇸 Abigail Spears 6–2, 6–4

Players

Seeds

seeds are based on the rankings of October 5, 2009

Other entrants

The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following player received a lucky loser spot: