Friedrich Krupp Germaniawerft (often just called Germaniawerft, "Germania shipyard") was a German shipbuilding company, located in the harbour at Kiel, and one of the largest and most important builders of U-boats for the Kaiserliche Marine in World War I and the Kriegsmarine in World War II.
In 1908, Germaniawerft built the schooner Germania for Gustav Krupp von Bohlen und Halbach, based on a design from Max Oertz.
Afterwards, it returned to its original vocation, including building the steel-hulled barque Magdalene Vinnen II, now STS Sedov and the largest traditional sailing ship still afloat.
During World War II, the Germaniawerft was one of the most important suppliers of the Kriegsmarine, because of its proximity to German naval facilities in Kiel.
Over the course of the war, the company completed 131 U-boats (types II, VII, XB, XIV, XVII, and XXIII).
The most famous U-boats built at the Germaniawerft are probably U-47, which was commanded by Günther Prien during his sinking of HMS Royal Oak in 1940, and U-96, which formed the basis of Lothar-Günther Buchheim's novel Das Boot.