The North German Missionary Society or North German Mission is a Presbyterian Christian organisation based in Bremen formed on 19 April 1836 to unify missionary work in North Germany. The society has also been active among the Ewes in southeastern Gold Coast, now Ghana. The mission was engaged in New Zealand and India prior to concentrating its activities in Ghana from 1847.

Carl Sylvius Völkner was a German-born Protestant missionary active in the North Island of New Zealand during the mid-nineteenth century. He is famous for being tried and executed for espionage by members of the Pai Mārire faith at his church in Ōpōtiki, in the Bay of Plenty. This later became known as the Völkner incident, an important event in the New Zealand Wars.