| Hideo Usui | |
| Native Name Lang: | ja |
| Office: | Minister of Justice |
| Primeminister: | Keizō Obuchi Yoshirō Mori |
| Term Start: | 5 October 1999 |
| Term End: | 4 July 2000 |
| Predecessor: | Takao Jinnouchi |
| Successor: | Okiharu Yasuoka |
| Office1: | Director-General of the Japan Defense Agency |
| Primeminister1: | Ryutaro Hashimoto |
| Term Start1: | 11 January 1996 |
| Term End1: | 7 November 1996 |
| Predecessor1: | Seishirō Etō |
| Successor1: | Fumio Kyūma |
| Birth Date: | 3 January 1939 |
| Birth Place: | Chiba, Chiba |
| Alma Mater: | Chuo University |
| Office2: | Member of the House of Representatives |
| Termstart2: | June 22, 1980 |
| Termend2: | October 10, 2003 |
| Termstart3: | September 11, 2005 |
| Termend3: | July 21, 2009 |
is a Japanese politician of the Liberal Democratic Party, and a former member of the House of Representatives, the lower house of the National Diet. He served as Minister of Justice from 1999 to 2000.
A native of Chiba city and a graduate of Chuo University,[1] he was elected for the first time in 1980 after an unsuccessful run in 1979. He served until losing his seat in the 2003 general election. He regained the seat in the 2005 general election, and retired after the 2009 general election. In 1996 he served as Director General of the Japan Defense Agency.
His eldest son, Shoichi Usui, is also a politician. He was elected to the House of Councillors in 2022, representing the Chiba at-large district.[2]
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