2023 Zadar Open – Singles

Flavio Cobolli was the defending champion but lost in the semifinals to Sebastian Ofner.

Alessandro Giannessi won the title after defeating Ofner 6–4, 5–7, 7–6(8–6) in the final.

Seeds
• # Tseng Chun-hsin (second round)

• # 🇸🇰 Jozef Kovalík (second round)

• # 🇬🇧 Ryan Peniston (first round)

• # 🇦🇹 Sebastian Ofner (final)

• # 🇮🇹 Flavio Cobolli (semifinals)

• # 🇫🇷 Laurent Lokoli (withdrew)

• # 🇨🇿 Vít Kopřiva (first round)

• # 🇫🇷 Manuel Guinard (first round)