William Joseph Humphrey MBE (born 17 October 1967) is a Unionist politician from Northern Ireland representing the Democratic Unionist Party (DUP). Humphrey was a Member of the Northern Ireland Assembly (MLA) for North Belfast from 2010 to 2022, replacing Nigel Dodds. Born in the Woodvale area of Belfast, Humphrey studied at the Boys' Model School. A member of the Woodvale Residents' Association, he joined the Democratic Unionist Party, becoming its chairman in North Belfast, and a member of the party's executive. In 2022, Humphrey announced that he would not contest the 2022 Assembly election.