is a Japanese politician serving in the House of Representatives in the Diet (national legislature) as a member of the Liberal Democratic Party.
| Koichi Tani | |
| Native Name Lang: | ja |
| Office: | Chairman of the National Public Safety Commission |
| Term Start: | 10 August 2022 |
| Term End: | 13 September 2023 |
| Primeminister: | Fumio Kishida |
| Successor: | Yoshifumi Matsumura |
| Office1: | Member of the House of Representatives |
| Term Start1: | 10 November 2003 |
| Constituency1: | Kinki PR block Hyōgo 5th |
| Party: | Liberal Democratic |
| Birth Date: | 28 January 1952 |
| Birth Place: | Muraoka, Mikata District, Hyōgo Prefecture, Japan |
| Parents: | （father） |
| Alma Mater: | Meiji University |
A native of Muraoka, Hyōgo and graduate of Meiji University, he was elected for the first time in 2003.