2012 Korea Open – Singles

María José Martínez Sánchez was the defending champion, but lost to Ekaterina Makarova in the quarterfinals. Caroline Wozniacki won the title, defeating Kaia Kanepi in the final, 6–1, 6–0. This was the first title in 13 months for the former World No. 1 and her first of 2012.

Seeds
• # Caroline Wozniacki (champion)

• # 🇷🇺 Maria Kirilenko (first round, retired because of a back injury)

• # 🇪🇪 Kaia Kanepi (final)

• # 🇷🇺 Nadia Petrova (second round, withdrew because of a back injury)

• # 🇩🇪 Julia Görges (first round)

• # 🇺🇸 Varvara Lepchenko (semifinals)

• # 🇨🇿 Klára Zakopalová (quarterfinals)

• # 🇷🇺 Ekaterina Makarova (semifinals)

Seeds
• # 🇰🇿 Sesil Karatantcheva (qualified)

• # 🇺🇸 Jamie Hampton (qualified)

• # Eleni Daniilidou (qualified)

• # 🇭🇺 Gréta Arn (qualifying competition)

• # 🇷🇺 Vera Dushevina (qualifying competition)

• # 🇯🇵 Misaki Doi (first round)

• # 🇫🇷 Claire Feuerstein (second round)

• # 🇺🇿 Akgul Amanmuradova (qualifying competition)

Qualifiers
• # 🇰🇿 Sesil Karatantcheva

• # 🇺🇸 Jamie Hampton

• # Eleni Daniilidou

• # 🇫🇷 Caroline Garcia