OB 15,5cm Geschütz is a World War II-era coastal artillery bunker located in Norway. This German-built fortification was part of the Atlantic Wall defensive system, designed to protect occupied Norwegian territory from Allied naval forces. The designation 'OB' indicates it was an 'Oberbau' (upper construction) type bunker, while '15,5cm Geschütz' refers to the 15.5 cm caliber gun it housed.
Situated along Norway's strategic coastline, this bunker formed part of the extensive German military infrastructure established during the occupation period from 1940 to 1945.