Hiromu Nonaka (野中 廣務, Nonaka Hiromu, 20 October 1925 – 26 January 2018) was a Japanese politician of the Liberal Democratic Party. Nonaka served as a local politician in Kyoto Prefecture from 1951 to 1978 and in the House of Representatives from 1983 to 2003, becoming one of its most prominent members in the 1990s. Nonaka served as Minister of Home Affairs and Head of the National Public Safety Commission from 1994 to 1995, as Chief Cabinet Secretary from 1998 to 1999, and as Head of the Okinawa Development Agency in 1999. Nonaka was widely considered as a voice of reason within the Liberal Democratic Party and viewed by some as the most powerful person in Japan during the mid-to-late 1990s.