Arthur Brian Deane Faulkner, Baron Faulkner of Downpatrick, PC (18 February 1921 – 3 March 1977), was the sixth and last Prime Minister of Northern Ireland, from March 1971 until his resignation in March 1972. He was also the chief executive of the short-lived Northern Ireland Executive during the first half of 1974. Faulkner was also the leader of the Ulster Unionist Party (UUP) from 1971 to 1974.