David Anthony Llewellyn Owen, Baron Owen CH PC FRCP (born 2 July 1938) is a British politician.
Owen served as British Foreign Secretary from 1977 to 1979, the youngest person in over forty years to hold the post; he co-authored the failed Vance-Owen and Owen-Stoltenberg peace plans offered during the Bosnian War. In 1981, Owen left the Labour Party to found the Social Democratic Party (SDP). Owen led the SDP from 1983 to 1987, and the continuing SDP from 1988 to 1990. He sits in the House of Lords as a crossbencher.
In the course of his career, Owen has held, and resigned from, a number of senior posts. He first quit as Labour's spokesman on defence in 1972 in protest at the Labour leader Harold Wilson's attitude to the EEC; he left the Labour Shadow cabinet over the same issue later; and over unilateral disarmament in November 1980 when Michael Foot became Labour leader. He resigned from the Labour Party when it rejected one member, one vote in February 1981 and later as Leader of the Social Democratic Party, which he had helped to found, after the party's rank-and-file membership voted to merge with the Liberal Party.