The 2011 Copa Claro was a men's tennis tournament played on outdoor clay courts. It was the 14th edition of the Copa Claro, and was part of the ATP World Tour 250 series of the 2011 ATP World Tour. It took place in Buenos Aires, Argentina, from February 14 through February 20, 2011. Nicolás Almagro won the singles title.
See main article: 2011 Copa Claro – Singles. 
Nicolás Almagro defeated 
Juan Ignacio Chela 6–3, 3–6, 6–4.
See main article: 2011 Copa Claro – Doubles. 
Oliver Marach / Leonardo Mayer defeated 
Franco Ferreiro / André Sá, 7–6(8–6), 6–3
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Spain | Nicolás Almagro | 13 | 1 | |
| Stanislas Wawrinka | 14 | 2 | ||
| Argentina | David Nalbandian | 19 | 3 | |
| Spain | Albert Montañés | 25 | 4 | |
| Argentina | Juan Mónaco | 29 | 5 | |
| Spain | Tommy Robredo | 31 | 6 | |
 Ukraine | Alexandr Dolgopolov | 32 | 7 | |
| Argentina | Juan Ignacio Chela | 39 | 8 |
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
See main article: 2011 Copa Claro – Singles qualifying.