2021 Korea Open – Singles

Karolína Muchová was the reigning champion, but chose not to participate.

Zhu Lin won her first WTA 125 tournament, defeating Kristina Mladenovic in the final, 6–0, 6–4.

Seeds
• # 🇫🇷 Kristina Mladenovic (final)

• # 🇨🇳 Zhu Lin (champion)

• # 🇭🇺 Réka Luca Jani (second round)

• # Valentini Grammatikopoulou (second round)

• # Arianne Hartono (quarterfinals)

• # 🇰🇷 Jang Su-jeong (second round)

• # 🇧🇬 Isabella Shinikova (quarterfinals)

• # 🇯🇵 Yuki Naito (quarterfinals)