John Hanbury Martin (4 April 1890 – 3 February 1983) was a British Labour politician.
During World War I, he served as a captain in the Queen's Westminsters.
At the 1931 United Kingdom general election, he stood unsuccessfully for the Labour Party in Great Yarmouth, and from 1934 until 1949, he served on Southwark Borough Council.
He was elected Member of Parliament (MP) for Southwark Central in 1940, resigning in 1948.
This article about a Labour Party member of Parliament representing an English constituency is a stub.