2012 ATP Vegeta Croatia Open Umag – Singles

Alexandr Dolgopolov was the defending champion but lost in the semifinals to Marin Čilić, who won the title by beating Marcel Granollers 6–4, 6–2 in the final.

Seeds
The top four seeds receive a bye into the second round. • # 🇪🇸 Fernando Verdasco (semifinals)

• # Marin Čilić (champion)

• # 🇺🇦 Alexandr Dolgopolov (semifinals)

• # 🇪🇸 Marcel Granollers (final)

• # 🇦🇷 Carlos Berlocq (quarterfinals)

• # 🇪🇸 Juan Carlos Ferrero (first round)

• # 🇸🇰 Martin Kližan (second round)

• # 🇫🇷 Édouard Roger-Vasselin (first round)

Seeds
• # 🇮🇹 Matteo Viola (qualifying competition)

• # 🇷🇸 Dušan Lajović (qualifying competition)

• # 🇧🇦 Damir Džumhur (second round)

• # 🇪🇸 Adrián Menéndez Maceiras (qualifying competition)

• # 🇮🇹 Simone Vagnozzi (second round)

• # 🇦🇷 Marco Trungelliti (qualified)

• # Marcel Felder (second round)

• # 🇷🇸 Nikola Ćaćić (first round)

Qualifiers
• # 🇸🇰 Ivo Klec

• # 🇪🇸 Gorka Fraile

• # 🇮🇹 Walter Trusendi

• # 🇦🇷 Marco Trungelliti