2019 Busan Open – Singles

Matthew Ebden was the defending champion but chose not to defend his title.

Ričardas Berankis won the title after defeating Andrew Harris 7–6(7–5), 6–2 in the final.

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

• # 🇺🇦 Sergiy Stakhovsky (second round)

• # 🇨🇦 Brayden Schnur (second round)

• # 🇸🇰 Lukáš Lacko (third round)

• # Jason Jung (second round)

• # 🇨🇾 Marcos Baghdatis (third round)

• # 🇷🇺 Evgeny Donskoy (quarterfinals)

• # 🇮🇳 Ramkumar Ramanathan (second round)

• # 🇷🇸 Nikola Milojević (second round)

• # 🇯🇵 Tatsuma Ito (quarterfinals)

• # 🇰🇷 Kwon Soon-woo (second round)

• # 🇧🇪 Ruben Bemelmans (second round)

• # 🇯🇵 Yūichi Sugita (second round)

• # 🇯🇵 Hiroki Moriya (second round)

• # 🇯🇵 Go Soeda (quarterfinals)

• # 🇯🇵 Yasutaka Uchiyama (semifinals)