John Gilbert Dale (1869 – 6 March 1926) was a British scientist who also became a prominent trade union and political activist.
Born in Hanley, Staffordshire, Dales studied at Victoria College in Congleton.
He also stood for Parliament in St Pancras North at the 1918 United Kingdom general election, taking 26.6% of the votes cast.
Dale instead devoted his time to the Prison Officers' Federation, a surviving, legal, affiliate of NUPPO, serving as its president.
[1] Dale remained politically active, contesting Walthamstow East at the 1923 and 1924 United Kingdom general elections, taking just over a third of the vote and second place on each occasion.