James Mavor, professor of political economy in the University of Toronto from 1892 to 1923, made path‐breaking contributions to Canadian geography in four areas: producing a comprehensive regional report on north‐west Canada (including an original map of ethnic distribution); introducing economic geography into the Toronto political economy curriculum; preparing analytical economic/social geography chapters on Canada for the Oxford Survey of the British Empire; and presenting illuminating ideas on immigration. The pioneering work described here is largely unrecognized, in part because Mavor was overshadowed by his Toronto successor, Harold Innis.