The 2011 Grand Prix Hassan II was a men's tennis tournament played on outdoor clay courts. It was the 27th edition of the Grand Prix Hassan II, and an World Tour 250 event on the 2011 ATP World Tour. It took place at the Complexe Al Amal in Casablanca, Morocco, from 4 April until 10 April 2011. Unseeded Pablo Andújar won the singles title.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Spain | Albert Montañés | 22 | 1 | |
 Cyprus | Marcos Baghdatis | 24 | 2 | |
 France | Gilles Simon | 27 | 3 | |
 Kazakhstan | Andrey Golubev | 37 | 4 | |
 Italy | Potito Starace | 47 | 5 | |
| France | Jérémy Chardy | 49 | 6 | |
| Italy | Fabio Fognini | 53 | 7 | |
 Romania | Victor Hănescu | 59 | 8 |
The following players received wildcards into the main draw:
The following players received entry via qualifying:
See main article: 2011 Grand Prix Hassan II – Singles. Pablo Andújar defeated Potito Starace, 6–1, 6–2
See main article: 2011 Grand Prix Hassan II – Doubles. 
Robert Lindstedt / Horia Tecău defeated 
Colin Fleming / 
Igor Zelenay, 6–2, 6–1
