The 2010 Canada Masters was a tennis tournament played on outdoor hard courts in Canada. It was the 121st edition of the Canada Masters for the men, and was part of the ATP Masters Series of the 2010 ATP World Tour, and of the Premier Series of the 2010 WTA Tour. The men's event was held at the Rexall Centre in Toronto, Canada, from August 7 through August 15, 2010. The women's event was held at the Uniprix Stadium in Montreal, Canada, from August 13 through August 23, 2010. It was scheduled to end August 22 but some of the matches were postponed to August 23 due to rain.

Caroline Wozniacki is a Danish professional tennis player. She was ranked world No. 1 in singles for a total of 71 weeks, including at the end of 2010 and 2011. She achieved the top ranking for the first time on 11 October 2010, becoming the 20th player in the Open Era and the first from a Scandinavian country to hold the top position. In 2018, she became the first Dane to win a major singles title, at the Australian Open.