2019 Kremlin Cup – Men's singles

Karen Khachanov was the defending champion, but lost in the quarterfinals to Andreas Seppi.

Andrey Rublev won the title, defeating Adrian Mannarino in the final, 6–4, 6–0.

Seeds
The top four seeds received a bye into the second round. • #🇷🇺 Daniil Medvedev (withdrew)

• #🇷🇺 Karen Khachanov (quarterfinals)

• # Marin Čilić (semifinals)

• #🇷🇸 Dušan Lajović (quarterfinals)

• # Cristian Garín (first round)

• #🇷🇺 Andrey Rublev (champion)

• #🇫🇷 Adrian Mannarino (final)

• #🇷🇸 Miomir Kecmanović (second round)

Seeds
• # 🇧🇾 Egor Gerasimov (qualified)

• # 🇧🇦 Damir Džumhur (qualified)

• # 🇧🇾 Ilya Ivashka (first round)

• # 🇨🇿 Lukáš Rosol (qualified)

• # 🇷🇸 Nikola Milojević (qualifying competition, Lucky loser)

• # 🇦🇹 Sebastian Ofner (qualifying competition)

• # 🇩🇪 Rudolf Molleker (qualifying competition)

• # 🇸🇰 Filip Horanský (qualifying competition)

Qualifiers
• # 🇧🇾 Egor Gerasimov

• # 🇧🇦 Damir Džumhur

• # 🇷🇺 Artem Dubrivnyy

• # 🇨🇿 Lukáš Rosol

Lucky loser

 * 1) 🇷🇸 Nikola Milojević