Klaus-Dieter Lehmann (pronounced [klaʊ̯s ˈdiːtɐ ˈleːman]) (born 29 February 1940 in Breslau) is a German librarian and has been president of the Goethe-Institut since April 2008.
Born in 1940 in Breslau, he studied physics and mathematics and passed his state examination in library science.
In 1988 Lehmann became director of the Deutsche Bibliothek, Frankfurt, the national library of West Germany. Following German reunification he merged the library with its East German counterpart in Leipzig; since 2006, the institution has been known as the German National Library. From 1998 to 2008 he served as president of the Prussian Cultural Heritage Foundation.
Lehmann was awarded the Federal Cross of Merit, First Class, in 1996.