2009 Pattaya Women's Open – Singles

Agnieszka Radwańska was the defending champion, but chose to participate in the Open GDF Suez, which was held the same week.

Seeds
• # 🇷🇺 Vera Zvonareva (champion)

• # Caroline Wozniacki (quarterfinals)

• # 🇸🇰 Dominika Cibulková (withdrew due to a viral illness)

• # 🇦🇹 Sybille Bammer (second round)

• # 🇨🇳 Peng Shuai (quarterfinals)

• # 🇹🇭 Tamarine Tanasugarn (quarterfinals)

• # 🇮🇱 Shahar Pe'er (semifinals)

• # 🇸🇰 Magdaléna Rybáriková (semifinals)