Leonard Firby Edmondson (16 December 1912 – 20 November 2006) was a British trade unionist.
After two years of unemployment and short-term work, he completed an apprenticeship as a fitter with the Concrete Liner Company.
He joined the Amalgamated Engineering Union (AEU) and worked for a large number of businesses around the Tyne, generally acting as a shop steward.
He was considered a highly skilled negotiator, who persuaded companies to introduce apprenticeships for machinists, and limit overtime.
[1] In 1934, Edmondson joined the National Unemployed Workers Movement and, through this, joined the Independent Labour Party (ILP), remaining a member until the late 1940s, and identifying as being on the left-wing of the trade union movement for the rest of his life.