Daniel Mérida defeated Damir Džumhur in the final, 6–2, 5–7, 6–2 to win the singles tennis title at the 2026 Croatia Open Umag. It was his first ATP Tour title.
Luciano Darderi was the reigning champion, but he chose to compete in Båstad instead.
Seeds The top four seeds received a bye into the second round.
Draw
Finals
Top half
Bottom half
Qualifying Seeds
Qualifiers
Lucky loser
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
References
External links