Douglas Peter Moffatt (born July 5, 1937) is a former politician in Ontario, Canada.
He represented Durham East in the Legislative Assembly of Ontario from 1975 to 1977 as a NDP member.
He was a school teacher and principal before working seventeen years with United Parcel Service.
He was elected to the legislature in 1975 defeating Progressive Conservative Charles McIlveen in the newly established riding of Durham East.
McIlveen was elected in the existing seat of Oshawa but chose to attempt re-election in Durham East.