2019 Kunming Open – Men's singles

Prajnesh Gunneswaran was the defending champion but lost in the final to Jay Clarke.

Clarke won the title after defeating Gunneswaran 6–4, 6–3 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇦🇺 Jordan Thompson (third round)

• # 🇮🇳 Prajnesh Gunneswaran (final)

• # 🇵🇱 Kamil Majchrzak (semifinals)

• # Jason Jung (third round)

• # 🇮🇳 Ramkumar Ramanathan (quarterfinals)

• # 🇦🇺 Alex Bolt (quarterfinals)

• # 🇦🇹 Dennis Novak (second round)

• # 🇦🇺 Jason Kubler (third round)

• # 🇦🇺 James Duckworth (quarterfinals)

• # 🇷🇸 Nikola Milojević (quarterfinals)

• # 🇪🇸 Enrique López Pérez (third round)

• # 🇰🇿 Aleksandr Nedovyesov (second round)

• # 🇫🇷 Maxime Janvier (third round)

• # 🇬🇧 Jay Clarke (champion)

• # 🇨🇿 Adam Pavlásek (third round)

• # 🇨🇳 Zhang Ze (second round)