Hans Howaldt (12 November 1888, Kiel – 6 September 1970) was a successful and highly decorated German U-boat commander in the Kaiserliche Marine during World War I and also active in World War II. By the end of World War I he was promoted Kapitänleutnant.

Hans Howaldt
Born	12 November 1888 Kiel, German Empire
Died	6 September 1970(1970-09-06) (aged 81) Bad Schwartau, West Germany
Allegiance	German Empire  Nazi Germany
Service/branch	Imperial German Navy  Kriegsmarine
Years of service	1907–1918 and 1939–1945
Rank	Kapitän zur See
Unit	Flandern Flottille, Zeebrugge, and in 1939 a unit of minelayers in the Baltic Sea, including Kattegat and Skagerrak
Commands held	UC-4, UB-40 and UB-107 Minelayer Hansestadt Danzig
Battles/wars	U-boat Campaign (World War I)
Awards	Iron Cross House Order of Hohenzollern Pour le Mérite Hanseatic Cross War Merit Cross
Relations	His grandfather August Howaldt was the builder of the first German submarine Brandtaucher.

Olympic medal record
Sailing
	1936 Berlin	8 metre class

As a sportsman, Hans Howaldt won Bronze in the international 8 Metre class sailing at the 1936 Summer Olympics on the Bay of Kiel as skipper of Germania III, a keelboat designed and built by Abeking & Rasmussen and owned by crew-member Alfried Krupp von Bohlen und Halbach.