The 1973 Macdonald Lassies Championship, the Canadian women's curling championship was held February 26 to March 2 at the Charlottetown Curling Club[1] in Charlottetown, Prince Edward Island.

[2] Manitoba and Saskatchewan both finished round robin play tied for first with 8–1 records, necessitating a tiebreaker playoff between the two teams.

Team Saskatchewan, who was skipped by Vera Pezer defeated Manitoba in the tiebreaker 6–4 to capture the championship.

Saskatchewan defeated Manitoba in the final draw 7–5 in an extra end to force the tiebreaker.

The teams were as follows:[4] Skip: Betty Cole Third: Shirley Fisk Second: Bonnie Cessford Lead: Sharon Grey Skip: Karin Kaese Third: Shannon Blackburn Second: Loretto Ahlstrom Lead: Donna Dunn Skip: Joan Ingram Third: Lorraine Bradawaski Second: Dorothy Rose Lead: Jackie Tinney Skip: Sheila McLeod Third: Lois Walker Second: Agnes Freeze Lead: Isabelle Lougheed Skip: Ann Bowering Third: Joan Pope Second: Jean Burden Lead: Chris Cathcart Skip: Elizabeth Hodgins Third: Faye Thornham Second: Marjorie White Lead: Shelaugh Thomson Skip: Isobel Munro[5] Third: Thelma Lindsay Second: Geraldine Macklem Lead: Vyvienne Johnston Skip: Elayne Thompson Third: Ruth Cutcliffe Second: Louise Thompson Lead: Frances Roberts Skip: Lee Tobin Third: Francine Collison Second: Marilyn Hone Lead: Michelle Garneau Skip: Vera Pezer Third: Sheila Rowan Second: Joyce McKee Lead: Lee Morrison Final round robin standings[4] All draw times are listed in Atlantic Standard Time (UTC-04:00).