The 1976 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 1976 Commercial Union Assurance Grand Prix and of the 1976 WTA Tour. The tournament was held from August 16 through August 22, 1976.

Finals

Men's singles

🇦🇷 Guillermo Vilas defeated 🇵🇱 Wojciech Fibak 6–4, 7–6, 6–2

Women's singles

Mima Jaušovec defeated 🇦🇺 Lesley Hunt 6–2, 6–0

Men's doubles

Bob Hewitt / 🇲🇽 Raúl Ramírez defeated 🇪🇸 Juan Gisbert Sr. / 🇪🇸 Manuel Orantes 6–2, 6–1

Women's doubles

🇦🇺 Cynthia Doerner / 🇺🇸 Janet Newberry defeated / by walkover