John Lindsley

John Lindsley (5 November 1886 – 1960) was a British trade unionist and political activist.

Lindsley was born in Sunderland and worked as a clerk. He joined the Independent Labour Party (ILP) at an early age and was chosen as secretary of the Sunderland ILP in 1907. He began working for Newcastle upon Tyne Council, and in 1908 formed the first branch of the National Union of Clerks (NUC) in North East England. He soon formed a Northern Council in the union, promoting the creation of other branches in the area.

In 1910, Lindsley was selected to contest Barkston Ash for the Labour Party. He ultimately withdrew his candidacy, but was selected as Prospective Parliamentary Candidate for Dumfries Burghs in 1911. Due to the outbreak of World War I, no election was held until 1918, and by that time, Lindsley's political views had changed. A strong supporter of British involvement in the war, he resigned from the ILP, and joined the National Democratic and Labour Party (NDP), standing unsuccessfully for it in Houghton-le-Spring.