Reiherstieg Schiffswerfte & Maschinenfabrik, also known as Reiherstiegwerft, was a German shipbuilding company, located on the Reiherstieg River in Hamburg. It was founded in 1706 by Lucas Kramer. During World War I Reiherstiegwerft built three U 151 U-boats for the Kaiserliche Marine, the U-151, U-152 and U-153.