2024 Zagreb Open – Singles

Filip Misolic was the defending champion but lost in the second round to Oriol Roca Batalla.

Damir Džumhur won the title after defeating Luka Mikrut 7–5, 6–0 in the final.

Seeds
• # 🇧🇦 Damir Džumhur (champion)

• # 🇺🇸 Nicolas Moreno de Alboran (first round)

• # 🇪🇸 Oriol Roca Batalla (semifinals)

• # 🇦🇷 Marco Trungelliti (withdrew)

• # 🇫🇷 Quentin Halys (first round)

• # 🇦🇷 Genaro Alberto Olivieri (first round)

• # 🇩🇴 Nick Hardt (quarterfinals)

• # Henrique Rocha (second round)

• # Dino Prižmić (second round)