2024 Zagreb Open

The 2024 Zagreb Open was a professional tennis tournament played on clay courts. It was part of the 2024 ATP Challenger Tour. It took place in Zagreb, Croatia between 3 and 9 June 2024.

Seeds

 * Rankings are as of 27 May 2024.

Other entrants
The following players received wildcards into the singles main draw:
 * Matej Dodig
 * Roko Horvat
 * Luka Mikrut

The following player received entry into the singles main draw using a protected ranking:
 * 🇪🇸 Nicolás Álvarez Varona

The following player received entry into the singles main draw as an alternate:
 * 🇯🇵 Rio Noguchi

The following players received entry from the qualifying draw:
 * Guy den Ouden
 * Gastão Elias
 * 🇫🇷 Mathys Erhard
 * Nino Serdarušić
 * 🇪🇸 Carlos Taberner
 * Alexey Zakharov

Singles

 * 🇧🇦 Damir Džumhur def. Luka Mikrut 7–5, 6–0.

Doubles

 * 🇫🇷 Jonathan Eysseric / 🇫🇷 Quentin Halys def. 🇷🇴 Alexandru Jecan / Henrique Rocha 6–4, 6–4.