Gerhard Thäter (18 November 1916, in Kiel – 15 February 2004, in Wilhelmshaven) was a German naval officer. Entering the Kriegsmarine in 1936 he served in the submarine branch and as commander of U-466 and U-3506 saw action during the Second World War. When the Federal Republic of Germany established her own armed forces in 1956, Thäter joined the Bundesmarine. In the course of his service he was made Naval Attaché to West Germany's embassy at Ottawa, Canada. On 15 February 2004 Thäter died in Wilhelmshaven, Germany.