2019 Croatia Open Umag – Singles
| Singles | |
|---|---|
| 2019 Croatia Open Umag | |
| Champion | Dušan Lajović |
| Runner-up | Attila Balázs |
| Score | 7–5, 7–5 |
| Draw | 28 (4 Q / 3 WC ) |
| Seeds | 8 |
Marco Cecchinato was the defending champion, but lost in the first round to Aljaž Bedene.
Dušan Lajović won his first ATP Tour singles title, defeating Attila Balázs in the final, 7–5, 7–5.