The 1978 Macdonald Lassies Championship, the Canadian women's curling championship was held February 26 to March 2, 1978, at the Sault Memorial Gardens in Sault Ste.

[1][2] Team Manitoba, who was skipped by Cathy Pidzarko won the event by finishing round robin play with a 7–3 record.

This was Manitoba's third championship with their last title coming in 1967.

This would be the last women's championship to have a champion determined by round robin and the last one before the creation of the Women's World Curling Championship.

The teams are listed as follows:[3] Skip: Betty Cole Third: Liz Gemmell Second: Anne McGarvey Lead: Shirley Fisk Skip: Heather Haywood Third: Bernice McCallan Second: Shirley Snihur Lead: Una Goodyear Skip: Cathy Pidzarko Third: Chris Pidzarko Second: Iris Armstrong Lead: Patti Vanderkerckhove Skip: Karen McDermott Third: Gisele Shaw Second: Ilona Schnarr Lead: Lillian Lavigne Skip: Sue Anne Bartlett Third: Patricia Dwyer Second: Joyce Butt Lead: Mavis Pike Skip: Penny LaRocque Third: Brenda Shutt Second: Charmaine Murray Lead: Wendy Conrad Skip: Sheila Seltzer Third: Louise Davison Second: Jane Chalmers Lead: Marlene Linton Skip: Gloria Basha Third: Marilyn Sutherland Second: Wilma McLure Lead: Marion Basha Skip: Carole Topp Third: Nicole Labelle Second: Katherine Randall Lead: Ann Delage Skip: Charlene Goodwin Third: Holly Webster Second: Nancy Bint Lead: Betty Fairweather Skip: Donna Alexander Third: Doris Sekulich Second: Cecille Ward Lead: Dora Delmage Final round robin standings[3] All draw times are listed in Eastern Standard Time (UTC-05:00).