| 2024 Zagreb Open | |
|---|---|
| Date | 3–9 June 2024 |
| Edition | 19th |
| Surface | Clay |
| Location | Zagreb, Croatia |
| Champions | |
| Singles | |
 Damir Džumhur | |
| Doubles | |
 Jonathan Eysseric / Quentin Halys | |
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.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| BIH | Damir Džumhur | 128 | 1 |
 USA | Nicolas Moreno de Alboran | 130 | 2 |
 ESP | Oriol Roca Batalla | 164 | 3 |
 ARG | |||
| FRA | Quentin Halys | 187 | 5 |
| ARG | Genaro Alberto Olivieri | 188 | 6 |
 DOM | Nick Hardt | 193 | 7 |
 POR | Henrique Rocha | 203 | 8 |
 CRO | Dino Prižmić | 204 | 9 |
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:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Guy den Ouden Gastão Elias Mathys Erhard Nino Serdarušić Carlos Taberner 
Alexey Zakharov Damir Džumhur def. Luka Mikrut 7–5, 6–0. Jonathan Eysseric / Quentin Halys def. 
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