Polish Alliance of Canada was created in 1907 from the merging of three of the existing Polish organizations in the province of Ontario: Society of Mutual Aid "Sons of Poland", Society of St. Stanislaus and the Progressuve Polish Union.
The aim of PAC is to carry out cultural, charitable and social activities, cultivating Polish traditions and promote the rich heritage of Polish culture. The compound formed by PAC Branches, Polish Women Circle, Youth Groups, PAC-Mutual Aid Society and affiliated organizations. The guiding slogan of the Alliance: Brotherhood-Tolerance-Education.
Polish Alliance of Canada is the oldest ethnic organization in Canada.