The 1915 Alberta liquor plebiscite was the first plebiscite to ask voters in Alberta whether the province should implement prohibition by ratifying the proposed Liquor Act. The plebiscite was the culmination of years of lobbying by the province's temperance movements and agricultural groups, and was proposed through the recently implemented form of direct democracy, the Direct Legislation Act. Alberta voters approved the plebiscite on prohibition, which was implemented eleven months after the vote. The June 21, 1915 plebiscite was the first of three province-wide plebiscites held in a seven year period related to liquor in Alberta.