Hans Thomsen (14 September 1891 - 31 October 1968) was a German diplomat for the Third Reich. He served as Chargé d'Affaires at the Embassy of Germany in Washington, DC representing the German government from November 1938 (after the recall of ambassador Hans-Heinrich Dieckhoff) to 11 December 1941 (termination of relations after declaration of war).
Thomsen traded politely phrased but nonetheless sharp barbs with Soviet Foreign Minister Vyachelsav Molotov in the dining area. After being politely reminded by Molotov of Germany's unprovoked aggression against the Soviet Union, Thomsen just as politely reminded Molotov of the Soviet Union's unprovoked aggression against Finland. To the relief of all present, the discussion did not escalate.