Hermann Müller (17 October 1935 – 31 December 2013) was a German politician (CDU), who served from 1978 to 2002 as mayor of Idstein. During his four terms, he worked for restoration of the town's framework houses, creation of a pedestrian area, building of a hall as a cultural centre and construction of bypass roads. In 2002, he won the festival Hessentag for Idstein, improving the infrastructure further.