| Party: | Social Democratic Party of Finland |
| Constituency Mp: | Uusimaa |
| Parliament: | Finnish |
| Birth Date: | 27 March 1986 |
| Birth Place: | Ekenäs, Finland |
Johan Birger Matias Kvarnström (born 27 March 1986)[1] is a Finland-Swedish politician currently serving in the Parliament of Finland for the Social Democratic Party of Finland at the Uusimaa constituency.[2]