2019 Almaty Challenger – Singles

Denis Istomin was the defending champion but lost in the third round to Federico Coria.

Lorenzo Giustino won the title after defeating Coria 6–4, 6–4 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇹🇳 Malek Jaziri (second round)

• # 🇺🇿 Denis Istomin (third round)

• # 🇷🇸 Nikola Milojević (quarterfinals)

• # 🇸🇰 Andrej Martin (quarterfinals)

• # 🇮🇹 Lorenzo Giustino (champion)

• # 🇩🇪 Yannick Hanfmann (semifinals)

• # 🇦🇺 Marc Polmans (second round)

• # 🇰🇿 Aleksandr Nedovyesov (quarterfinals)

• # 🇷🇸 Peđa Krstin (second round)

• # 🇨🇴 Santiago Giraldo (third round)

• # 🇷🇺 Evgeny Karlovskiy (third round)

• # 🇦🇺 Akira Santillan (second round)

• # 🇦🇷 Federico Coria (final)

• # 🇨🇦 Steven Diez (second round)

• # Gonçalo Oliveira (third round)

• # 🇪🇸 Daniel Gimeno Traver (third round)