The Association des enseignantes et des enseignants franco-ontariens (AEFO; ) is a Canadian trade union representing 13,110 teachers and other workers in Ontario's French-language public education system, including employees both of secular and Roman Catholic school boards. It also represents workers at the Lycée Claudel d'Ottawa, Le Cap in Ottawa, and the Centre Jules-Léger. Founded on 12 May 1939, the association is an affiliate of the Ontario Teachers' Federation and the Canadian Teachers' Federation.