2019 Amex-Istanbul Challenger – Singles

Corentin Moutet was the defending champion but chose not to defend his title.

Ugo Humbert won the title after defeating Denis Istomin 6–2, 6–2 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇫🇷 Ugo Humbert (champion)

• # 🇪🇸 Marcel Granollers (withdrew)

• # 🇷🇴 Marius Copil (third round)

• # 🇹🇳 Malek Jaziri (withdrew)

• # 🇺🇿 Denis Istomin (final)

• # 🇨🇿 Lukáš Rosol (third round)

• # 🇫🇷 Maxime Janvier (second round)

• # 🇮🇳 Ramkumar Ramanathan (third round)

• # 🇮🇹 Roberto Marcora (third round)

• # 🇧🇪 Ruben Bemelmans (quarterfinals)

• # 🇬🇧 Jay Clarke (second round)

• # 🇪🇸 Nicola Kuhn (quarterfinals)

• # 🇰🇿 Aleksandr Nedovyesov (quarterfinals)

• # 🇷🇺 Roman Safiullin (second round)

• # 🇨🇴 Santiago Giraldo (withdrew)

• # Blaž Kavčič (semifinals)

• # 🇮🇹 Matteo Viola (third round)