Denis Larkin (8 June 1908 – 2 July 1987) was an Irish Labour Party politician and trade union official.
[2] After leaving school, he worked in a variety of jobs, including the London Across Trading Concern.
In 1928 he became an official with the Workers' Union of Ireland (WUI) (founded by his father in 1924), and had to contend with a multitude of strikes in the coal, gas, building and victualling industries.
[2] As the WUI expanded during the 1940s, he became involved in many hearings and presentations at the Labour Court, and in 1949 became district branch secretary of the union and an executive member of the Irish Trades Union Congress (ITUC), working closely with his brother James, then general secretary of the WUI, although he did not share his brother's communist sympathies.
When James died in 1969, Denis became general secretary of the WUI, and presided over a period of expansion of the union.