This is the 1965-66 Women's Intercollegiate Athletic Union season.

The Toronto Varsity Blues won the championship with a 5-0-0 record.

The season appears to have consisted of a two weekend tournament held February 12, 18, and 19, 1966 also involving the McGill Martlets, the Guelph Gryphons, Queen's Golden Gaels, McMaster Marauders, and Western Ontario Mustangs.

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