The 2005 Canada Masters was a tennis tournament played on outdoor hard courts. It was the 116th edition of the Canada Masters, and was part of the ATP Masters Series of the 2005 ATP Tour, and of the Tier I Series of the 2005 WTA Tour. The men's event took place at the Uniprix Stadium in Montreal, Quebec, Canada, from August 8 through August 14, 2005, and the women's event at the Rexall Centre in Toronto, Ontario, Canada, from August 15 through August 21, 2005.