Catherine Mary Wisnicki (née Chard, 19 September 1919 – 21 October 2014) was a Canadian architect, planner and educator.

Right after World War II, she undertook a study of prefabricated housing for the Canadian Wooden Aircraft Company in Toronto.

She worked closely with partner Ned Pratt, participating in the design of the Brooks, Saba, Gregg and Mathers residences, all considered icons of Canadian West Coast Modernism.

She also worked briefly in partnership with architect John C. H. Porter to design the Daniels and Nemetz houses on the University of British Columbia Endowment Lands, which are also considered iconic.

After retiring in 1986, Wisnicki and her husband moved to Naramata, British Columbia where they designed and built an innovative passive solar house.