David Allen MBE (24 October 1937-13 December 2011) was a teacher, trade unionist and politician from Northern Ireland. A member of the Vanguard Unionist Progressive Party, he represented the group in the Northern Ireland Constitutional Convention. He was elected to Ballymena Borough Council in 1973, topping the poll in the C District Electoral Area. He retained the seat in 1977, albeit as a "Ratepayers" candidate, having left the Vanguard in the interim.