Johan Oscar Michelsen (4 December 1844 – 12 August 1936[1]) was a Norwegian missionary to the New Hebrides (now Vanuatu).
Michelsen emigrated from Norway to New Zealand, where he sold religious literature on the Otago goldfields.
[2] He applied to the Synod of Otago and Southland to become a missionary, and was appointed to the island of Tongoa in 1878.
J. Graham Miller calls him "one of the least educated but most gifted, versatile and warm-hearted" of the pioneer missionaries to Vanuatu.
[2] Michelsen wrote Cannibals Won for Christ (1893) and Misi (1934).