The 1972 Rothmans Canadian Open was a tennis tournament played on outdoor clay courts at the Toronto Cricket Skating and Curling Club[3] in Toronto in Canada that was part of the 1972 Commercial Union Assurance Grand Prix The men's tournament was categorized as a Grade A tournament, the second-highest category, while the women's competition was a Grade D event.

The tournament was held from August 14 through August 20, 1972.

Ilie Năstase and Evonne Goolagong won the singles titles.

[4] Ilie Năstase defeated Andrew Pattison 6–4, 6–3 Evonne Goolagong defeated Virginia Wade 6–3, 6–1 Ilie Năstase / Ion Țiriac defeated Jan Kodeš / Jan Kukal 7–6, 6–3 Margaret Court / Evonne Goolagong defeated Brenda Kirk / Pat Walkden 3–6, 6–3, 7–5