István Thomán (Hungarian: [ˈiʃtvaːn ˈtomaːn]; 4 November 1862 – 22 September 1940) was a Hungarian piano virtuoso and music educator. He was a notable piano teacher, with students including Béla Bartók, Ernő Dohnányi, Paul de Marky who later taught Oscar Peterson in Quebec, Gisela Selden-Goth, and Georges Cziffra. His six-volume Technique of Piano Playing is still in use today.