Otto Ernst Lindemann (28 March 1894 – 27 May 1941) was a German naval captain. He was the only commander of the battleship Bismarck during its eight months of service in World War II. Lindemann joined the German Imperial Navy () in 1913, and after his basic military training, served on a number of warships during World War I as a wireless telegraphy officer. On board SMS Bayern, he participated in Operation Albion in 1917. After World War I, he served in various staff and naval gunnery training positions. One year after the outbreak of World War II, he was appointed commander of the battleship Bismarck, at the time the largest warship in commission anywhere in the world and the pride of the German Navy (Kriegsmarine).