2023 Gwangju Open – Singles

Zsombor Piros was the defending champion but chose not to defend his title.

Jordan Thompson won the title after defeating Max Purcell 6–3, 6–2 in the final.

Seeds
• # 🇦🇺 Max Purcell (final)

• # 🇺🇸 Christopher Eubanks (semifinals)

• # 🇦🇺 Jordan Thompson (champion)

• # 🇦🇺 James Duckworth (second round)

• # 🇪🇨 Emilio Gómez (quarterfinals)

• # 🇦🇺 Rinky Hijikata (quarterfinals)

• # 🇦🇺 Aleksandar Vukic (second round)

• # 🇺🇸 Denis Kudla (first round)