2018 President's Cup (tennis) – Men's singles

Egor Gerasimov was the defending champion but lost in the second round to Jurij Rodionov.

Sebastian Ofner won the title after defeating Daniel Brands 7–6(7–5), 6–3 in the final.

Seeds
• # 🇷🇺 Mikhail Youzhny (second round)

• # 🇰🇿 Alexander Bublik (first round)

• # 🇦🇹 Sebastian Ofner (champion)

• # 🇯🇵 Hiroki Moriya (first round)

• # 🇧🇾 Egor Gerasimov (second round)

• # 🇰🇷 Lee Duck-hee (second round)

• # 🇷🇺 Ivan Nedelko (first round)

• # 🇹🇷 Cem İlkel (first round)