August Wilmanns (25 March 1833, Vegesack – 27 October 1917, Berlin) was a German classical philologist and librarian.
He studied classical philology at the Universities of Bonn and Tübingen, receiving his doctorate in 1863 with a dissertation on the Roman scholar Marcus Terentius Varro. In 1870 he began work as a librarian at the "Universitätsbibliothek" in Freiburg, followed by professorships at the Universities of Innsbruck (1871) and Kiel (1873). In 1874 he was named "Oberbibliothekar" (head librarian) at the University of Königsberg, shortly afterwards, given the same title at the "Niedersächsische Staats- und Universitätsbibliothek" in Göttingen (1875).
From 1886 to 1914 he was general director of the "Königliche Bibliothek" (Royal Library) in Berlin, where he was successor to Karl Richard Lepsius. During his tenure at Berlin, he was credited with conducting a comprehensive reorganization of the library. In 1895 he established a "Gesamtkatalog" (centralized catalog), initially for Prussia, later being extended to include research libraries in all German-speaking countries.
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