| Mitsugu Watanabe | |
| Birth Date: | 4 March 1928 |
| Birth Place: | Tokyo, Tokyo Prefecture, Japan |
| Death Place: | Saitama Prefecture, Japan |
| Nationality: | Japanese |
| Education: | Chuo University |
| Party: | JCP |
| Office: | Member of the House of Representatives of Japan |
| Term Start: | 1979 |
| Term End: | 1983 |
| Constituency: | Saitama 1st district |
Mitsugu Watanabe (ja|渡辺貢; Watanabe Mitsugu; 4 March 1928 – 12 June 2022) was a Japanese politician. A member of the Japanese Communist Party, he served in the House of Representatives from 1979 to 1983.
Watanabe died in Saitama Prefecture on 12 June 2022 at the age of 94.[1]