John William Banfield (29 August 1875 – 25 May 1945)[1] was a British trade unionist and Labour Party politician, who served as Member of Parliament (MP) for Wednesbury from 1932 until his death in 1945.

When the Labour Party unexpectedly gained control of Fulham Borough Council in 1919 they added Banfield to the Aldermanic bench to add political and trade union expertise.

[3] In 1932, the Conservative MP for Wednesbury, Viscount Ednam succeeded to the peerage as Earl of Dudley, triggering a by-election in July 1932.

In June 1937, he made a speech in Parliament, proposing the addition of a clause to the Factories Bill: Prohibition of night work in bakehouses.

A block of council flats, William Banfield House in Munster Road, Fulham was named after him.