| Kumiko Aihara | |
| Native Name Lang: | ja |
| Office: | Member of House of Councillors |
| Term Start: | 29 July 2007 |
| Constituency1: | National PR |
| Birth Date: | 14 March 1947 |
| Birth Place: | Mikasa, Hokkaido, Japan |
| Party: | CDP |
| Otherparty: | |
| Alma Mater: | Hokkai Gakuen University |
is a Japanese politician of the Constitutional Democratic Party and a member of the House of Councillors in the Diet (national legislature).[1] [2] A native of Hokkaidō and law graduate of Hokkai Gakuen University, she was elected for the first time in 2007.