2018 ASB Classic – Women's singles

Lauren Davis was the defending champion, but lost in the first round to Sachia Vickery.

Julia Görges won the title, defeating Caroline Wozniacki in the final, 6–4, 7–6(7–4).

Wozniacki was in contention for the WTA No. 1 singles ranking at the start of the tournament. She was eliminated from contention when Simona Halep reached the quarterfinals in Shenzhen.

Seeds
• # Caroline Wozniacki (final)

• # 🇩🇪 Julia Görges (champion)

• # 🇨🇿 Barbora Strýcová (quarterfinals)

• # 🇵🇱 Agnieszka Radwańska (quarterfinals)

• # 🇺🇸 Lauren Davis (first round)

• # 🇰🇿 Yulia Putintseva (first round)

• # 🇩🇪 Mona Barthel (first round)

• # Donna Vekić (first round)

Seeds
• # Jana Fett (qualified)

• # Richèl Hogenkamp (first round)

• # Viktorija Golubic (first round)

• # 🇬🇧 Naomi Broady (second round)

• # 🇯🇵 Risa Ozaki (second round)

• # 🇦🇺 Arina Rodionova (qualifying competition)

• # 🇺🇸 Sachia Vickery (qualified)

• # 🇯🇵 Miyu Kato (qualifying competition)

Qualifiers
• # Jana Fett

• # 🇧🇪 Ysaline Bonaventure

• # 🇺🇸 Sachia Vickery

• # 🇸🇰 Viktória Kužmová