The 2011 Crédit Agricole Suisse Open Gstaad was a men's tennis tournament played on outdoor clay courts. It was the 44th edition of the Crédit Agricole Suisse Open Gstaad, and was part of the ATP World Tour 250 Series of the 2011 ATP World Tour. It took place at the Roy Emerson Arena in Gstaad, Switzerland, from 25 July through 31 July 2011.
| Country | width=150 | Player | Ranking* | Seeding |
|---|---|---|---|---|
 Spain | Nicolás Almagro | 14 | 1 | |
| Stanislas Wawrinka | 16 | 2 | ||
 Russian Federation | Mikhail Youzhny | 17 | 3 | |
| Spain | Fernando Verdasco | 22 | 4 | |
| Spain | Feliciano López | 24 | 5 | |
| Spain | Guillermo García-López | 37 | 6 | |
| Spain | Pablo Andújar | 44 | 7 | |
| Spain | Marcel Granollers | 47 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
See main article: 2011 Credit Agricole Suisse Open Gstaad – Singles qualifying.
See main article: 2011 Crédit Agricole Suisse Open Gstaad – Singles. Marcel Granollers defeated Fernando Verdasco, 6–4, 3–6, 6–3
See main article: 2011 Crédit Agricole Suisse Open Gstaad – Doubles. 
František Čermák / 
Filip Polášek defeated Christopher Kas / 
Alexander Peya, 6–3, 7–6(9–7)
