Friedrich Katzer (Czech: Bedřich Katzer; 5 June 1861, Rokitzan – 3 February 1925) was an Austrian geologist and mineralogist. From 1880 to 1883 he was a student at the University of Prague and at the Technische Hochschule in Prague, where he later worked as an assistant. In 1888 he was head of a testing station for construction materials in Wrschowitz. In 1890 he obtained his PhD from the University of Giessen, later becoming an assistant in mineralogy and geology at the University of Leoben (1892).