Rita Lafontaine (June 8, 1939 – April 4, 2016) was a Canadian theatre, film, and television actor. Born in Trois-Rivières, Quebec. She has been described as the muse of playwright Michel Tremblay and director André Brassard. Her career spanned over fifty years and left an "indelible mark on Québec theatre, film and television". She is a four-time recipient of the Gémeaux Award; three times for Best Lead Actress and once for Best Supporting Actress. She was named an Officer of the Order of Canada in 2005 and an Officer of the National Order of Quebec in 2011.
