2019 Jinan International Open – Men's singles

Alexei Popyrin was the defending champion but chose not to defend his title.

Zhang Zhizhen won the title after defeating Go Soeda 7–5, 2–6, 6–4 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇮🇳 Prajnesh Gunneswaran (quarterfinals)

• # 🇰🇷 Kwon Soon-woo (semifinals)

• # 🇦🇺 Matthew Ebden (second round)

• # 🇦🇺 James Duckworth (third round)

• # 🇯🇵 Tatsuma Ito (third round)

• # 🇯🇵 Yasutaka Uchiyama (second round)

• # 🇯🇵 Go Soeda (final)

• # 🇨🇦 Steven Diez (second round)

• # 🇷🇸 Peđa Krstin (second round)

• # 🇯🇵 Hiroki Moriya (second round)

• # 🇪🇸 Enrique López Pérez (semifinals)

• # 🇨🇳 Bai Yan (second round)

• # 🇨🇳 Li Zhe (quarterfinals)

• # 🇦🇺 Max Purcell (quarterfinals)

• # 🇪🇸 Roberto Ortega Olmedo (second round)

• # 🇦🇺 Akira Santillan (third round)