2009 ATP Studena Croatia Open Umag

The 2009 ATP Studena Croatia Open Umag was a tennis tournament played on outdoor red clay courts. It was the 20th edition of the event known that year as the ATP Studena Croatia Open Umag and was part of the ATP World Tour 250 series of the 2009 ATP World Tour. It took place at the International Tennis Center in Umag, Croatia, from 27 July through 2 August 2009. First-seeded Nikolay Davydenko won the singles title.

Seeds
*Seedings based on the July 20, 2009 rankings.

Other entrants
The following players received wildcards into the singles main draw
 * Ivan Dodig
 * Blaž Kavčič
 * 🇮🇹 Filippo Volandri

The following players received entry from the qualifying draw:
 * 🇪🇸 Marcel Granollers
 * 🇪🇸 Rubén Ramírez Hidalgo
 * 🇸🇰 Martin Kližan
 * 🇦🇷 Juan Ignacio Chela

Singles
🇷🇺 Nikolay Davydenko defeated 🇪🇸 Juan Carlos Ferrero, 6–3, 6–0.
 * It was Davydenko's second title of the year and 16th of his career.

Doubles
🇨🇿 František Čermák / 🇸🇰 Michal Mertiňák defeated 🇸🇪 Johan Brunström / Jean-Julien Rojer, 6–4, 6–4.