1974 Rothmans Canadian Open

{{Use mdy dates|date=August 2023}}

{{TennisEventInfo|1974|Rothmans Canadian Open|

| date=August 12–18

| edition=85th

| surface=Clay / outdoor

| location=Toronto, Ontario, Canada

| venue=Toronto Cricket Skating and Curling Club

| champms={{flagicon|ARG}} Guillermo Vilas{{cite web|title=1974 Toronto – Men's Singles draw|url=https://www.atptour.com/en/scores/archive/toronto/421/1974/draws?matchtype=singles|publisher=Association of Tennis Professionals (ATP)}}

| champws={{flagicon|USA}} Chris Evert

| champmd={{flagicon|ESP|1945}} Manuel Orantes / {{flagicon|ARG}} Guillermo Vilas{{cite web|title=1974 Toronto – Men's Doubles draw|url=https://www.atptour.com/en/scores/archive/toronto/421/1974/draws?matchtype=doubles|publisher=Association of Tennis Professionals (ATP)}}

| champwd={{flagicon|FRA}} Gail Chanfreau / {{flagicon|USA}} Julie Heldman

| main_name= Canadian Open (tennis) {{!}} Canadian Open

}}

The 1974 Rothmans Canadian Open was a tennis tournament played on outdoor clay courts at the Toronto Cricket Skating and Curling Club{{Cite news|url=http://www.rogerscup.com/tc125-the-tournaments/|title=TC125: The Tournaments - Rogers Cup WTA|date=2015-12-08|work=Rogers Cup WTA|access-date=2017-08-10|language=en-US}} 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.