2018 Almaty Challenger 2 – Singles

Jurij Rodionov was the defending champion but chose not to defend his title.

Denis Istomin won the title after defeating Nikola Milojević 6–7(4–7), 7–6(7–5), 6–2 in the final.

Seeds
• # 🇺🇿 Denis Istomin (champion)

• # 🇫🇷 Pierre-Hugues Herbert (withdrew)

• # 🇧🇦 Mirza Bašić (semifinals)

• # 🇫🇷 Quentin Halys (first round)

• # 🇨🇦 Félix Auger-Aliassime (first round)

• # 🇪🇸 Enrique López Pérez (first round)

• # 🇷🇸 Miomir Kecmanović (quarterfinals)

• # 🇨🇿 Lukáš Rosol (semifinals)