The 2015 Hoff Open was a professional tennis tournament played on clay courts. It was the first edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Moscow, Russia between 8 and 14 June 2015.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Spain | Marcel Granollers | 57 | 1 | |
 Russian Federation | Teymuraz Gabashvili | 74 | 2 | |
 Bosnia and Herzegovina | Damir Džumhur | 88 | 3 | |
| Blaž Rola | 97 | 4 | ||
 Moldova, Republic of | Radu Albot | 130 | 5 | |
| Russian Federation | Alexander Kudryavtsev | 131 | 6 | |
| Spain | Daniel Muñoz de la Nava | 134 | 7 | |
 Argentina | Horacio Zeballos | 142 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Patricio Heras Anton Zaitcev Mikhail Elgin
Thiago MonteiroThe following players received entry as a lucky loser into the main draw:
| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 Belarus | Sergey Betov | Russian Federation | Michail Elgin | 240 | 1 | |
| Moldova, Republic of | Radu Albot | Russian Federation | Alexander Kudryavtsev | 293 | 2 | |
| Belarus | Yaraslav Shyla | Belarus | Andrei Vasilevski | 393 | 3 | |
 Lithuania | Laurynas Grigelis |  Italy | Matteo Viola | 422 | 4 |
The following pairs received wildcards into the doubles main draw:
See main article: 2015 Hoff Open – Singles.
Daniel Muñoz de la Nava def. Radu Albot, 6–0, 6–1.See main article: 2015 Hoff Open – Doubles.
Renzo Olivo / Horacio Zeballos def. Julio Peralta / 
Matt Seeberger, 7–5, 6–3.