The 2015 Arimex ATP Challenger Trophy was a professional tennis tournament played on clay courts. It was the ninth edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place at the TC EMPIRE in Trnava, Slovakia from 21 to 27 September 2015.
Singles main-draw entrants
Seeds
1 Rankings are as of September 14, 2015.
Other entrants
The following players received wildcards into the singles main draw: Martin Blaško Artem Dubrivnyy Alex Molčan Dominik Šproch
The following player received a special exemption into the singles main draw: Artem Smirnov
The following players received entry from the qualifying draw: Riccardo Bellotti Lenny Hampel Miloslav Mečíř Jr. Tristan-Samuel Weissborn
The following player received entry as a lucky loser: Václav Šafránek
Champions
Singles
Robin Haase def. Horacio Zeballos, 6–4, 6–1
Doubles
Wesley Koolhof / Matwé Middelkoop def. Kamil Majchrzak / Stéphane Robert, 6–4, 6–2