A Member of Provincial Parliament (MPP) is an elected member of the Legislative Assembly of the Province of Ontario, Canada. The titular designation "Member of Provincial Parliament" and the initialism "MPP" were formally adopted by the Legislature on April 7, 1938. Before the adoption of this resolution, members had no fixed designation. Before Confederation members of the Legislative Assembly of the Province of Canada had been known by various titles including MPP, MLA and MHA and this confusion persisted after 1867 with members of the Ontario legislature using the titles Members of the Legislative Assembly (MLAs) or Members of Provincial Parliament (MPPs) interchangeably.