2018 Amex-Istanbul Challenger – Singles

Malek Jaziri was the defending champion but chose not to defend his title.

Corentin Moutet won the title after defeating Quentin Halys 6–3, 6–4 in the final.

Seeds
• # 🇮🇹 Thomas Fabbiano (semifinals)

• # 🇫🇷 Corentin Moutet (champion)

• # 🇪🇸 Adrián Menéndez Maceiras (first round)

• # 🇫🇷 Quentin Halys (final)

• # 🇫🇷 Constant Lestienne (second round)

• # 🇩🇪 Oscar Otte (second round)

• # Tallon Griekspoor (quarterfinals)

• # 🇦🇹 Lucas Miedler (quarterfinals)