| 1974 Rothmans Canadian Open | |
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| Date | August 12 – August 18 |
| Edition | 85th |
| 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 1974 Rothmans Canadian Open was a tennis tournament played on outdoor hard courts at the National Tennis Centre in Toronto in Canada that was part of the 1974 Commercial Union Assurance Grand Prix and of the 1974 WTA Tour. The tournament was held from August 12 through August 18, 1974.
Guillermo Vilas defeated
Manuel Orantes 6–4, 6–2, 6–3
Chris Evert defeated
Julie Heldman 6–0, 6–3