Daniel Ritchie McGladdery was a politician in Northern Ireland. He was active in the Amalgamated Engineering Union in Belfast, becoming a shop steward. He was elected as an Ulster Unionist member of the Senate of Northern Ireland in 1957, and served until the Senate's abolition in 1973. He was Deputy Leader of the Senate from 1960 until the office was abolished in 1961, served as and Parliamentary Secretary in the Department of the Prime Minister from 1960-70.