is a Japanese politician serving in the House of Representatives in the Diet (national legislature) as a member of the Constitutional Democratic Party of Japan.
| Masayo Tanabu | |
| Native Name Lang: | ja |
| Term Start2: | 12 September 2005 |
| Term End2: | 16 November 2012 |
| Term Start1: | 6 July 2003 |
| Term End1: | 10 October 2003 |
| Constituency2: | Tohoku PR block |
| Term Start: | 26 July 2016 |
| Constituency: | Aomori at-large district |
| Predecessor: | Tsutomu Yamazaki |
| Birth Date: | 10 July 1969 |
| Birth Place: | Hachinohe, Aomori Prefecture, Japan |
| Party: | CDP |
| Otherparty: | |
A native of Hachinohe, Aomori and graduate of Tamagawa Gakugn Junior College for Women she was elected for the first time in 2003 after an unsuccessful run in 2000. Her father is Masami Tanabu, a member of House of Councilors.