Wilhelm Georg Grewe (16 October 1911 – 11 January 2000) was a German diplomat and professor of international law.
He was an expert in international law and was the author of Epochen der Völkerrechtsgeschichte (1984), a standard work on the subject.
From 1939 Grewe lectured at the Hochschule für Politik (School of Politics) in Berlin, which, in 1940, was incorporated into the new Auslandswissenschaftliche Fakultät (Faculty of Foreign Studies) at the Friedrich Wilhelm University of Berlin, where he served as lecturer in "Legal Foundations of Foreign Policy".
[2] Wilhelm Grewe served under Konrad Adenauer in the post-war years, from 1951 to 1955, heading the delegation negotiating the end of Allied occupation of West Germany, which led to the signing of the Convention on Relations between the Three Powers and the Federal Republic (Deutschlandvertrag) in 1954.
[3] Grewe served as West Germany's ambassador to Washington (1958–1962) and to Tokyo (1971–1976) and he was Permanent Representative to the North Atlantic Council at NATO headquarters in Paris and Brussels (1962–1971).