Sir John Vincent William Barry QC (13 June 1903 – 8 November 1969) was an Australian justice of the Supreme Court of Victoria, and an expert in criminology.

[1] In 1939, Barry joined the Australian Labor Party and ran, unsuccessfully, for the federal seat of Balaclava in the electoral year of 1943.

Appointed as a King's Counsel in 1942, Barry assisted Sir Charles Lowe in the inquiry into the Darwin air raids.

Representing the politician, Eddie Ward in a royal commission into the Brisbane Line, Barry was appointed commissioner to investigate the suspension of government in Papua New Guinea.

[3] Barry became a foundation chairman in the Department of Criminology at the University of Melbourne from 1951, and a member of the Victorian Parole Board from 1957, and was knighted in the 1961 New Year Honours.