2015 ITF Women's Circuit UBS Thurgau – Singles

Michaëlla Krajicek was the defending champion, however she chose to participate in Dubai instead.

Olga Govortsova won the title, defeating Rebecca Šramková in the final, 6–2, 6–1.

Seeds
• # 🇨🇿 Denisa Allertová (first round)

• # 🇩🇪 Anna-Lena Friedsam (second round)

• # Romina Oprandi (quarterfinals, retired)

• # 🇹🇳 Ons Jabeur (second round)

• # 🇦🇹 Tamira Paszek (withdrew)

• # 🇨🇿 Kristýna Plíšková (semifinals)

• # 🇩🇪 Laura Siegemund (second round)

• # 🇧🇾 Olga Govortsova (champion)