| 1970 Rothmans Canadian Open | |
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| Date | August 12 – August 18 (men) August 19 – August 25 (women) |
| Edition | 81st |
| 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 1970 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 1970 Pepsi-Cola Grand Prix. The men's tournament was held from August 12 through August 18, 1970, while the women's tournament was played from August 19 through August 25, 1970.
Rod Laver defeated
Roger Taylor 6–0, 4–6, 6–3
Margaret Court defeated
Rosemary Casals 6–8, 6–4, 6–4