| 2013 San Marino CEPU Open | |
|---|---|
| Date | 5 – 11 August |
| Edition | 26th |
| Surface | Clay |
| Location | City of San Marino, San Marino |
| Champions | |
| Singles | |
 Marco Cecchinato | |
| Doubles | |
Daniele Bracciali /  Florin Mergea | |
The 2013 San Marino CEPU Open was a professional tennis tournament plays on clay courts. It was the 26th edition of the tournament which is part of the Tretorn SERIE+ of the 2013 ATP Challenger Tour. It takes place in City of San Marino, San Marino between 5 and 11 August 2013.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 ESP | Daniel Gimeno Traver | 62 | 1 |
| ROU | Adrian Ungur | 92 | 2 |
 FRA | Guillaume Rufin | 96 | 3 |
 CZE | Jiří Veselý | 98 | 4 |
 GER | Jan-Lennard Struff | 103 | 5 |
| ITA | Filippo Volandri | 105 | 6 |
 NED | Jesse Huta Galung | 110 | 7 |
 SLO | Blaž Kavčič | 120 | 8 |
The following players received wildcards into the singles main draw:
Marco Cecchinato Alessandro Giannessi Gianluigi Quinzi Stefano TravagliaThe following players received entry from the qualifying draw:
Marco Cecchinato def. Filippo Volandri 6–3, 6–4
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