2015 Open de Rennes
 |
| 2015 Open de Rennes | |
|---|---|
| Date | 12–18 October |
| Edition | 9th |
| Surface | Hard |
| Location | Rennes, France |
| Champions | |
| Singles | |
 Malek Jaziri | |
| Doubles | |
 Andrea Arnaboldi /  Antonio Šančić | |
The 2015 Open de Rennes was a professional tennis tournament played on hard courts. It was the tenth edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Rennes, France between 12 and 18 October 2015.
Singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 NED
|
Robin Haase | 60 | 1 |
 COL
|
Santiago Giraldo | 65 | 2 |
 BEL
|
Steve Darcis | 66 | 3 |
| TUN
|
Malek Jaziri | 84 | 4 |
 SRB
|
Filip Krajinović | 87 | 5 |
 TUR
|
Marsel İlhan | 91 | 6 |
| CRO
|
Ivan Dodig | 109 | 7 |
 UKR
|
Illya Marchenko | 111 | 8 |
- 1 Rankings are as of October 5, 2015
Other entrants
The following players received wildcards into
The following players entered the singles main draw as alternates:
The following players received entry from the qualifying draw:
Romain Barbosa
Jeremy Jahn
Romain Jouan
James Marsalek
The following player entered as a lucky loser:
- Sebastien Boltz
Champions
Singles
Malek Jaziri def. 
Igor Sijsling, 5–7, 7–5, 6–4.
Doubles
Andrea Arnaboldi / Antonio Šančić def. Wesley Koolhof / Matwé Middelkoop, 6–4, 2–6, [14–12]