2010 ATP Studena Croatia Open Umag

The 2010 Studena Croatia Open Umag was a tennis tournament played on outdoor clay courts. It was the 21st edition of the Croatia Open Umag, and was part of the ATP World Tour 250 Series of the 2010 ATP World Tour. It took place at the International Tennis Center in Umag, Croatia, from July 26 through August 1, 2010.

Seeds
*Seedings based on the July 19, 2010 rankings.

Other entrants
The following players received wildcards into the singles main draw:
 * Ivan Dodig
 * Franko Škugor
 * Antonio Veić

The following players received entry from the qualifying draw:
 * 🇮🇹 Simone Bolelli
 * 🇦🇹 Gerald Melzer
 * 🇫🇷 Olivier Patience
 * 🇮🇹 Simone Vagnozzi

Singles
🇪🇸 Juan Carlos Ferrero defeated 🇮🇹 Potito Starace, 6–4, 6–4
 * It was Ferrero's third title of the year and 15th of his career.

Doubles
🇨🇿 Leoš Friedl / 🇸🇰 Filip Polášek defeated 🇨🇿 František Čermák / 🇸🇰 Michal Mertiňák, 6–3, 7–6(9–7)