The 2013 Open de Rennes was a professional tennis tournament played on hard courts. It was the eight edition of the tournament which was part of the 2013 ATP Challenger Tour. It took place in Rennes, France between 7 and 13 October 2013.
Singles main-draw entrants
Seeds
1 Rankings are as of September 30, 2013.
Other entrants
The following players received wildcards into the singles main draw: Kenny de Schepper Nicolas Mahut Josselin Ouanna Guillaume Rufin
The following players used protected ranking to get into the singles main draw: Andreas Beck
The following players received entry from the qualifying draw: Kimmer Coppejans Constant Lestienne Björn Phau Jürgen Zopp
Champions
Singles
Nicolas Mahut def. Kenny de Schepper 6–3, 7–6(7–3)
Doubles
Florin Mergea / Oliver Marach def. Nicholas Monroe / Simon Stadler 6–4, 3–6, [10–7]