2019 Gwangju Open – Singles

Maverick Banes was the defending champion but lost in the first round to Shintaro Imai.

Jason Jung won the title after defeating Dudi Sela 6–4, 6–2 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇱🇹 Ričardas Berankis (withdrew)

• # 🇺🇦 Sergiy Stakhovsky (third round)

• # 🇨🇦 Brayden Schnur (third round, retired)

• # 🇷🇺 Evgeny Donskoy (quarterfinals)

• # Jason Jung (champion)

• # 🇰🇷 Kwon Soon-woo (semifinals)

• # 🇸🇰 Lukáš Lacko (quarterfinals)

• # 🇯🇵 Tatsuma Ito (second round, retired)

• # 🇧🇪 Ruben Bemelmans (third round)

• # 🇯🇵 Yūichi Sugita (third round)

• # 🇦🇺 Max Purcell (second round)

• # 🇮🇱 Dudi Sela (final)

• # 🇨🇳 Li Zhe (quarterfinals)

• # 🇯🇵 Kaichi Uchida (second round)

• # 🇰🇷 Lee Duck-hee (second round)

• # 🇮🇳 Saketh Myneni (second round)