1978 Macdonald Lassies Championship
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. Marie, Ontario.
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.
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.