A referendum on the introduction of prohibition was held in the Dominion of Newfoundland on 4 November 1915. It would prohibit unauthorised people from possessing or consuming any drinks with an alcohol content of more than 2%.
The rules required that at least 40% of registered voters vote in favour of the proposal for it to pass. With 24,956 voting in favour, the quorum of 24,581 was narrowly passed, and prohibition was introduced on 1 January 1917. It remained in force until 1924, when a quota system for purchasing alcoholic drinks was introduced. That was scrapped on 31 March 1966.