Kaiserliche Werft Wilhelmshaven (Wilhelmshaven Imperial Shipyard) was a German shipbuilding company in Wilhelmshaven, founded in 1871 and closed in 1918. Together with Kaiserliche Werft Danzig and Kaiserliche Werft Kiel it was one of three shipyards which solely produced warships for the Preußische Marine and the following German Kaiserliche Marine. With the end of World War I all three imperial shipyards were closed, but the Wilhelmshaven shipyard was reopened in 1919, first as Reichsmarinewerft Wilhelmshaven, and after 1935 named Kriegsmarinewerft Wilhelmshaven.