2013 ATP Vegeta Croatia Open Umag – Doubles

David Marrero and Fernando Verdasco were the defending champions, but Verdasco decided not to participate. Marrero successfully defended the title alongside Martin Kližan, defeating Nicholas Monroe and Simon Stadler in the final, 6–1, 5–7, [10–7].

Seeds
• # 🇨🇿 František Čermák / 🇨🇿 Lukáš Dlouhý (quarterfinals)

• # 🇩🇪 Andre Begemann / 🇩🇪 Martin Emmrich (semifinals)

• # 🇺🇸 Nicholas Monroe / 🇩🇪 Simon Stadler (final)

• # 🇵🇱 Tomasz Bednarek / 🇵🇱 Mateusz Kowalczyk (first round)