Masanori Nishio (西尾 正範, Nishio Masanori, 3 January 1949 – 28 May 2022)[1] was a Japanese politician.
Nishio was born in Ōno, Hokkaidō, now part of the city of Hokuto. After graduating Kyoto University, he became a public servant in 1973. He was appointed deputy mayor of Hakodate by its then-mayor Hiroshi Inoue (politician) in July 2003, but resigned himself in December 2006 due to a rift with the mayor over the construction of a retirement home.[2] He beat Inoue in the mayoral election held on 22 April 2007, and took office on 27 April.