Sir William Francis Langer Owen, KBE, QC (21 November 1899 – 31 March 1972) was an Australian judge who served as a Justice of the High Court of Australia from 1961 until his death in 1972.
Owen enlisted on 31 December 1915, and was assigned as a sapper in the 9th Field Company Engineers, part of the Australian 3rd Division.
He was wounded a second time at the Battle of the Somme on 23 May 1918, and was evacuated to a military hospital in Orpington, United Kingdom.
In the late 1940s, Owen's associate was Laurence Street, a future Chief Justice of New South Wales.
In 1957 Owen was made a Knight Commander of the Order of the British Empire, and on 22 September 1961 he was appointed to the bench of the High Court, at the age of 61 and ten months.