The 2013 Eskişehir Cup was a professional tennis tournament played on hard courts. It was the 1st edition of the tournament which was part of the 2013 ATP Challenger Tour. It took place in Eskişehir, Turkey between 15 and 21 July 2013.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Israel | ||||
 Belgium | David Goffin | 107 | 2 | |
 Russian Federation | Teymuraz Gabashvili | 136 | 3 | |
 Belarus | Uladzimir Ignatik | 155 | 4 | |
| Marco Chiudinelli | 164 | 5 | ||
 Turkey | Marsel İlhan | 177 | 6 | |
 Slovakia | Karol Beck | 203 | 7 | |
| Belarus | Dzmitry Zhyrmont | 224 | 8 |
The following players received wildcards into the singles main draw:
Durukan Durmuş Barış Ergüden Cem İlkel Anıl YükselThe following players received entry as alternates into the singles main draw:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers into the singles main draw:
Gilad Ben Zvi
Jaime Pulgar-GarcíaSee main article: 2013 Eskişehir Cup – Singles.
David Goffin def. Marsel İlhan, 4–6, 7–5, 6–2See main article: 2013 Eskişehir Cup – Doubles.
Sanchai Ratiwatana / Sonchat Ratiwatana, 6–3, 3–6, [10–7]