2012 HP Open – Singles

Marion Bartoli was the defending champion, but chose not to compete.

Heather Watson won the title after a marathon 3 hour 12 minute battle with Chang Kai-chen. The match saw Watson hold match point before Chang came back and won the second set. Chang went up a break and had multiple match points at 5–4 before Watson broke and won a final-set tiebreak. Watson won by a score of 7–5, 5–7, 7–6(7–4). Watson became the first British player to win the WTA Tour level since Sara Gomer in the 1988 Women's California State Championships.

Seeds
• # 🇦🇺 Samantha Stosur (semifinals)

• # 🇨🇳 Zheng Jie (second round)

• # 🇺🇸 Christina McHale (first round)

• # 🇮🇹 Francesca Schiavone (first round, retired)

• # 🇰🇿 Yaroslava Shvedova (first round)

• # 🇪🇸 Anabel Medina Garrigues (second round)

• # Chanelle Scheepers (quarterfinals)

• # 🇬🇧 Laura Robson (quarterfinals)

Seeds
• # 🇸🇪 Johanna Larsson (qualifying competition)

• # 🇷🇺 Olga Puchkova (qualified)

• # 🇨🇦 Eugenie Bouchard (qualifying competition)

• # 🇯🇵 Yurika Sema (first round, retired)

• # 🇨🇳 Wang Qiang (first round)

• # 🇯🇵 Junri Namigata (second round)

• # 🇹🇭 Luksika Kumkhum (qualified)

• # 🇹🇭 Nudnida Luangnam (qualified)

Qualifiers
• # 🇹🇭 Nudnida Luangnam

• # 🇷🇺 Olga Puchkova

• # 🇹🇭 Luksika Kumkhum

• # 🇨🇳 Zhou Yimiao