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.

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.

• Iron Cross of 1914, 1st and 2nd class
• Hamburg and Lübeck Hanseatic Crosses
• Knight's Cross of the Royal House Order of Hohenzollern with Swords
• Order of the Crown, 4th class (Prussia)
• Pour le Mérite

• Howaldt in: Biographisches Lexikon für Schleswig-Holstein und Lübeck, Vol. 12 Neumünster 2006, p. 198 ff. ISBN 3-529-02560-7

• treffpunkt-howaldt.de – Howaldt family (in German)
• Wrecked Gefion torpedoed by UB 40
• Wrecked SS Salsette torpedoed by UB 40 [1]^{[permanent dead link‍]}