| Date: | 21–27 September |
| Edition: | 9th |
| Surface: | Clay |
| Location: | Trnava, Slovakia |
| Champs: | Robin Haase |
| Champd: | Wesley Koolhof / Matwé Middelkoop |
| After Name: | STRABAG Challenger Open |
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.
| Country | Player | Rank | Seed | |
|---|---|---|---|---|
| Robin Haase | 71 | 1 | ||
 Italy | 2 | |||
 Spain | Íñigo Cervantes | 110 | 3 | |
| Spain | Albert Montañés | 120 | 4 | |
 Japan | Taro Daniel | 124 | 5 | |
 Argentina | Horacio Zeballos | 140 | 6 | |
| Thiemo de Bakker | 144 | 7 | ||
 Czech Republic | Adam Pavlásek | 146 | 8 |
The following players received wildcards into the singles main draw:
Martin Blaško
Artem Dubrivnyy Alex Molčan Dominik ŠprochThe following player received a special exemption into the singles main draw:
The following players received entry from the qualifying draw:
Riccardo Bellotti
Lenny Hampel
The following player received entry as a lucky loser:
See main article: 2015 Arimex Challenger Trophy – Singles.
Horacio Zeballos, 6–4, 6–1See main article: 2015 Arimex Challenger Trophy – Doubles.
Kamil Majchrzak / 
Stéphane Robert, 6–4, 6–2