Anton Westermann (18 June 1806, Leipzig – 24 November 1869, Leipzig) was a German classical philologist.
From 1825 to 1830, he studied philology at the University of Leipzig, where in 1833 he became an associate professor of classical philology. From 1834 to 1865, he was a full professor of Greek and Roman literature at Leipzig. On four separate occasions he was dean to the faculty of philosophy.
He is known for his edition and critical examination of Demosthenes, for his edition of works by ancient authors such as Plutarch, Lysias, Callistratus and Philostratus, and for his scholarly treatment of Greek mythography ("Mythographoi"), biography ("Biographoi") and paradoxography ("Paradoxographoi"). His edition of Heraclitus' epistles, Heracliti Epistolae quae feruntur (1857), later appeared in Rudolf Hercher's Epistolographi Graeci.