The 2011 Canada Masters (also known as the 2011 Rogers Cup presented by National Bank and the 2011 Rogers Cup for sponsorship reasons) was a tennis tournament played on outdoor hard courts in Canada.

It was the 122nd edition of the Canada Masters (110th for the women) and was part of the ATP World Tour Masters 1000 of the 2011 ATP World Tour and the Premier Series of the 2011 WTA Tour.

The women's and legends event was held at the Rexall Centre in Toronto, Canada, and the men's event took place at the Uniprix Stadium in Montreal, Canada, from August 8 to August 14.

Novak Djokovic defeated Mardy Fish, 6–2, 3–6, 6–4 Serena Williams defeated Samantha Stosur, 6–4, 6–2 Michaël Llodra / Nenad Zimonjić defeated Bob Bryan / Mike Bryan, 6–4, 6–7(5–7), [10–5] Liezel Huber / Lisa Raymond defeated Victoria Azarenka / Maria Kirilenko, walkover [4] All money is in C$: The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following players received entry from a lucky loser spot: The following players received wildcards into the singles main draw The following players received entry from the qualifying draw: The following players received entry from a lucky loser spot: