OMEP was founded in Prague in 1948. Canada was represented at this founding meeting by Mrs. Grace Dolmage, from Vancouver. In 1956, the Nursery Education Association of Ontario (NEAO), which later became the Association of Early Childhood Educators of Ontario, studied the possibility of establishing a Canadian committee affiliated with OMEP.
A Preparatory Committee was admitted into OMEP at its congress in Brussels, in 1958. In 1960, this Committee held its first General Assembly in Sainte-Adèle, Québec, and obtained its full membership as National Committee at the OMEP World Congress in Zagreb. In 1966, OMEP-Canada, under the presidency of Mrs. Elsie Stapleford, was legally incorporated in Canada as a not-for-profit organization.
Since its foundation, OMEP-Canada has had Executive Committees and Boards of Directors with headquarters in Ontario, Alberta, and Québec. OMEP-Canada has participated in numerous projects and has also instigated several local, provincial, and international projects. OMEP-Canada has been the host of the World Congress in 1980, has organised a World Seminar in 1997 and another one in 2008. Some of its members have left their mark and were named OMEP honorary members: the late Candide Pineault, World President (1993-1998), Elsie Stapleford and Mary J. Wright, and Joyce Waddell-Townsend, as well as Jacqueline Thériault, Madeleine Baillargeon, Vice-President for North America and the Caribbean (2006-2012) and Rolande Filion.