Johan Willoch Erichsen (15 February 1842 – 22 August 1916) was a Norwegian bishop and theologian in the Church of Norway.

[1] Erichsen was born on 15 February 1842 in the city of Kristiansand in Lister og Mandal county in southern Norway.

His father was Hans Erichsen, a church worker at the Kristiansand Cathedral, and his mother was Mathilde Sophie Willoch.

She died young in 1873, and in 1877 he married Kristiane's younger sister, Helga Marie Margrete Boeck.

He taught in Oslo for several years at the Nissens skole and at an all girls school run by his aunt, Kathinka Willoch, in Kristiansand.