Regulation 17 was a regulation of the Government of Ontario, Canada, designed to limit instruction in French-language Catholic separate schools. The regulation was written by the Ministry of Education and was issued in July 1912 by the Conservative government of premier Sir James P. Whitney. It forbade teaching French beyond grade two in all separate schools.

French Canadians, or Franco-Canadians, are an ethnic group who trace their ancestry to French colonists who settled in France's colony of Canada beginning in the 17th century.