Frank Chapple, Baron Chapple of Hoxton (8 August 1921 – 19 October 2004) was general secretary of the Electrical, Electronic, Telecommunications and Plumbing Union (EETPU), a leading British trade union.
Frank Chapple was born in the slum area of Hoxton, east London, in a flat above his father's shoe-repair shop. There was no bath or running hot water in the Chapple home. A Communist Party member early in his adult life, Chapple left the party after, and partly as a result of, the Soviet suppression of the Hungarian Revolution of 1956. Thereafter he remained a forceful anti-communist.
He served as a member of the TUC general council for 12 years to 1983, having first joined the union in 1937, and he had held offices at every level in the electricians' union. From 1966 to 1984 he was the general secretary of the EETPU. After his retirement, he was elevated to the House of Lords as Baron Chapple of Hoxton. His successor was fellow anti-communist Eric Hammond. One of Chapple's sons, Barry Chapple, was a regional official of Amicus, which succeeded the EETPU. Amicus merged with the TGWU in 2007 to become Unite the Union.