| Mitsu Shimojo | |
| Native Name Lang: | ja |
| Office1: | Member of the House of Representatives |
| Constituency1: | Nagano 2nd district |
| Term Start1: | 24 October 2017 |
| Predecessor1: | Shunsuke Mutai |
| Term Start2: | 10 November 2003 |
| Term End2: | 16 November 2012 |
| Constituency2: | Nagano 2nd district |
| Predecessor2: | Jin Murai |
| Successor2: | Shunsuke Mutai |
| Party: | CDP |
| Otherparty: | Democratic DP Kibō no Tō DPP |
| Birth Date: | 29 December 1955 |
| Birth Place: | Matsumoto, Nagano Prefecture, Japan |
| Website: | 衆議院議員 下条みつ（公式ホームページ） |
| Alma Mater: | Shinshu University |
is a Japanese politician of the Democratic Party of Japan, a member of the House of Representatives in the Diet (national legislature). A native of Matsumoto, Nagano and graduate of Shinshu University, he was elected for the first time in 2003 after an unsuccessful run in 2000.