The 2011 Zucchetti Kos Tennis Cup was a professional tennis tournament played on clay courts. It was the eighth edition of the tournament which is part of the Tretorn SERIE+ of the 2011 ATP Challenger Tour. It took place in Cordenons, Italy between 15 and 21 August 2011.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 France | Éric Prodon | 88 | 1 | |
| Dustin Brown | 122 | 2 | ||
 Czech Republic | Jaroslav Pospíšil | 127 | 3 | |
| France | Florent Serra | 129 | 4 | |
 Italy | Simone Bolelli | 135 | 5 | |
| Jesse Huta Galung | 136 | 6 | ||
| Björn Phau | 137 | 7 | ||
 Slovakia | Martin Kližan | 138 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
See main article: 2011 Zucchetti Kos Tennis Cup – Singles. 
Daniel Muñoz de la Nava def. 
Nicolás Pastor 6–4, 2–6, 6–2
See main article: 2011 Zucchetti Kos Tennis Cup – Doubles. 
Julian Knowle / Michael Kohlmann def. 
Colin Ebelthite / Adam Feeney, 2–6, 7–5, [10–5]
