According to a study published by the Canadian Association of University Teachers,

In 2003-04, women made up just less than 32% of the full-time academic work force in Canada... When compared with other Anglo-American countries, Canada fares the poorest in terms of the overall share of women in the academic work force.

The full report, with data about gender breakdowns of casual, tenured and tenure-track, part- and full-time educational workers, is available here in a downloadable .pdf.