Alfred Theophil Holder (4 April 1840 - 12 January 1916) was an Austrian philologist, historian, and librarian. A specialist of Latin literature and Roman history, he is best known for his editions of Horace, Caesar, Tacitus, and Avianus, as well as for his three-volume lexicon of ancient Celtic languages entitled Alt-celtischer Sprachschatz (1891-1913).

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