Finnish Seamen's Mission Hamburg, Finnish seamen's church in Neustadt, Hamburg, Germany

The Finnish Seamen's Mission Hamburg is a dark brown brick church in Neustadt, designed by Pentti Ahola and Dieter Langmaack and consecrated on 18 December 1966. A tall square tower with a barred opening and a cross-shaped recess stands beside a lower wing with a long window band and glass entrance doors. The building also contains a café, library, shop, saunas and guest rooms.

Finnish seamen were first cared for in Hamburg from the 1880s by pastors of the Swedish Seamen's Mission. The Finnish mission sent Toivo Waltari in 1901, and he began official work in February 1902. After several moves and the destruction of its building in 1943, the current church, designed by Pentti Ahola and Dieter Langmaack, was consecrated on 18 December 1966.

The name Finnische Seemannskirche reflects its dual role: seamen's mission and local church for Finns in Hamburg. Since 1991 the Hungarian-speaking Reformed congregation has held its services here as a guest. The building also holds a café, library, shop, saunas and guest rooms, and in 2016 recorded around 70,000 visitors.

The building stands in Neustadt beside the Norwegian Seamen's Church and the Danish Benediktekirke, with the Swedish Seamen's Church at the other end of the street. A Sunday service, mostly in Finnish and usually with communion, is held once a month, and a devotion takes place weekly. The brick facade carries a cross-shaped recess on the tower and a blue sign at the lower left.

The brick facade hides a cross-shaped recess on the tower, a detail many visitors walk past. Inside, the building also holds guest rooms and staff flats, so the mission doubles as a place to stay for Finns passing through Hamburg.