August Adler (24 January 1863, Opava, Austrian Silesia – 17 October 1923, Vienna) was a Czech and Austrian mathematician noted for using the theory of inversion to provide an alternate proof of Mascheroni's compass and straightedge construction theorem.

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  • O'Connor, John J.; Robertson, Edmund F., "August Adler", MacTutor History of Mathematics Archive, University of St Andrews