| Hiroto Kumagai | |
| Native Name: | くまがい ひろと |
| Native Name Lang: | ja |
| Term Start: | 2019 |
| Constituency: | Saitama Prefecture |
| Birth Date: | March 23, 1962 |
| Birth Place: | Saitama Prefecture |
| Party: | Constitutional Democratic Party Social Democratic Party |
| Alma Mater: | Chuo University |
Hiroto Kumagai is a Japanese politician who is a member of the House of Councillors of Japan. He represents the Saitama at-large district.
He was born on March 23, 1962, and graduated from Chuo University. Afterwards, he joined LOTTERIA Co., Ltd., a chain of fast-food restaurant for a year. He later joined the Policy Secretary to Kazuhito Wada and Mie Ishida.[1] In 2007, he was a member of the Saitama City Assembly for three terms. In 2019, he was elected to the House of Councillors.[2] [3]