2015 PTT Thailand Open – Singles

Ekaterina Makarova was the defending champion, but chose not to participate this year.

Daniela Hantuchová won the title, defeating Ajla Tomljanović in the final, despite being two match points down against Marina Erakovic in the third set in the semifinal. This was Hantuchová's final WTA tour singles title, before her retirement in 2017.

Seeds
• #🇨🇳 Peng Shuai (second round)

• #🇺🇦 Elina Svitolina (withdrew)

• #🇰🇿 Zarina Diyas (first round)

• #🇯🇵 Kurumi Nara (second round)

• #🇰🇿 Yaroslava Shvedova (withdrew)

• #🇦🇺 Jarmila Gajdošová (second round)

• # Monica Puig (semifinals)

• #🇨🇳 Zhang Shuai (second round)

Seeds
• # 🇷🇺 Alexandra Panova (first round)

• # 🇨🇳 Zhu Lin (qualifying competition, lucky loser)

• # 🇯🇵 Misa Eguchi (qualified)

• # 🇺🇦 Yuliya Beygelzimer (qualifying competition, lucky loser)

• # 🇨🇳 Xu Yifan (qualified)

• # 🇨🇳 Liu Fangzhou (qualifying competition)

• # 🇷🇺 Elizaveta Kulichkova (qualified)

• # Chan Yung-jan (qualified)

Qualifiers
• # 🇨🇳 Xu Yifan

• # 🇷🇺 Elizaveta Kulichkova

• # 🇯🇵 Misa Eguchi

• # Chan Yung-jan

Lucky losers
• # 🇺🇦 Yuliya Beygelzimer

• # 🇨🇳 Zhu Lin