Shinji Hirai (平井 伸治, Hirai Shinji, born 17 September 1961) is a Japanese politician, the governor of Tottori Prefecture in Japan, first elected in 2007. He graduated from the University of Tokyo with the B.L. degree in 1984 and joined the Ministry of Home Affairs upon graduation.

• 政治家情報 〜平井 伸治〜. senkyo.janjan.jp (in Japanese). JANJAN. Archived from the original on 9 June 2008. Retrieved 8 December 2007.

• Official website (in Japanese)