| 1971 Rothmans Canadian Open | |
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| Date | August 9 – August 16 |
| Edition | 82nd |
| Category | WCT |
| Surface | Clay / Outdoor |
| Location | Toronto, Ontario, Canada |
| Venue | National Tennis Centre |
| Champions | |
| Men's Singles | |
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| Women's Singles | |
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| Men's Doubles | |
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| Women's Doubles | |
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The 1971 Rothmans Canadian Open was a tennis tournament played on outdoor clay courts at the National Tennis Centre in Toronto in Canada that was part of the 1971 World Championship Tennis circuit. The tournament was held from August 9 through August 16, 1971. John Newcombe and Françoise Dürr won the singles titles.
John Newcombe defeated
Tom Okker 7–6, 3–6, 6–2, 7–6
Françoise Dürr defeated
Evonne Goolagong 6–4, 6–2