| Group: | ITF World Tennis Tour (Men) |
| Dates: | to |
| Week: | 13 |
| Category: | M15 |
| Country: | CRO |
| Court surface: | Clay - Outdoor |
| Entry list: | https://www.itftennis.com/en/tournament/m15-opatija/cro/2025/m-itf-cro-2025-003/acceptance-list/ |
| Results: | https://www.itftennis.com/en/tournament/m15-opatija/cro/2025/m-itf-cro-2025-003/draws-and-results/ |