| Champ: |  Fernando Verdasco |
| Runner: |  Igor Andreev |
| Score: | 3–6, 6–4, 7–6(7–4) |
| Draw: | 28 (4 / 3) |
| Seeds: | 8 |
| Type: | singles doubles |
See main article: 2008 Croatia Open Umag.
Carlos Moyá was the defending champion, but lost in the quarterfinals to Fabio Fognini.
Fernando Verdasco won in the final 3–6, 6–4, 7–6(7–4), against Igor Andreev.
The top four seeds receive a bye into the second round.