The defending champion in singles Pablo Cuevas did not participate in the tournament again. Dominic Thiem won his second title of the year or his career after his tournament victory in Nice . In the final he beat João Sousa 6: 4, 6: 1. František Čermák and Lukáš Rosol were successful in doubles last year. Only Rosol took part again (with Rameez Junaid ) and was eliminated in the semifinals against the eventual tournament winners Máximo González and André Sá . They defeated Mariusz Fyrstenberg and Santiago González in the final 4: 6, 6: 3, [10: 5]. They won their second and tenth titles.
The field of participants in the single competition consisted of 28 players, that of the doubles competition consisted of 16 pairs. The four top seeded players each received a bye into the second round. The total prize money was 439,405 euros; the total financial liabilities were 494,310 euros.
The qualification for the Konzum Croatia Open Umag 2015 took place from July 18th to 20th, 2015. Four qualifying places were played, which entitle them to participate in the main draw of the tournament.
At the Konzum Croatia Open Umag 2015 the following prize money and world ranking points were paid out or credited for reaching the respective round. Players who entered the main field from qualification will receive the specified qualification points in addition to those for reaching the respective round. Otherwise the amounts are not to be understood as cumulative. The amounts for the double competition apply per team.
Pablo Cuevas
František Čermák Lukáš Rosol
Dominic Thiem
Máximo González André Sá
Damir Džumhur (89)
Laslo Đere
Thomas Fabbiano
G. Monfils
M. Juschny
P. Kohlschreiber
S. Giraldo
Father Carreño Busta
M. Kližan
J. Sousa
A. Bedene
B. Kavčič
