Edgar Antonsen (1940 – 2 August 1993) was a Norwegian serial killer and rapist who was responsible for at least three murders and rapes committed in Vestfold og Telemark and Møre og Romsdal from 1962 to 1974, some with the aid of his half-brother. Convicted and sentenced to life imprisonment in 1975, he was prematurely released in 1988 and committed suicide five years later to avoid an impending arrest for sexually abusing a young girl.