2024 Croatia Open Umag – Singles

Alexei Popyrin is the defending champion.

Seeds
The top four seeds received a bye into the second round. • # Andrey Rublev

• #🇮🇹 Lorenzo Musetti

• # Holger Rune

• #🇦🇷 Francisco Cerúndolo

• #🇮🇹 Luciano Darderi

• #🇦🇷 Mariano Navone

• #🇨🇿 Tomáš Macháč

• #🇮🇹 Matteo Arnaldi (first round)

Seeds
• # 🇸🇰 Jozef Kovalík (first round)

• # 🇫🇷 Alexandre Müller (moved to main draw)

• # 🇦🇷 Marco Trungelliti (qualified)

• # 🇪🇸 Oriol Roca Batalla (first round)

• # Tseng Chun-hsin (qualifying competition)

• # Jaime Faria (first round)

• # Henrique Rocha (qualifying competition)

• # 🇩🇴 Nick Hardt (first round)

Qualifiers
• # 🇦🇹 Filip Misolic

• # 🇦🇷 Guido Andreozzi

• # 🇦🇷 Marco Trungelliti

• # 🇫🇷 Enzo Couacaud