Marcos Baghdatis and
Mikhail Youzhny were the defending champions but retired in the second round because of Baghdatis's foot injury.
Julian Knowle and
Filip Polášek won the title, defeating
Ivan Dodig and
Mate Pavić 6–3, 6–3 in the final.
Seeds
Draw
Draw
References
Main Draw
{{DEFAULTSORT:2013 PBZ Zagreb Indoors - Doubles
PBZ Zagreb Indoors - Doubles
2013 Doubles
2013 PBZ Zagreb Indoors