See main article: 2015 PTT Thailand Open.
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.