Pine Brook is an unincorporated community in Isanti County, Minnesota, United States.

The community is located between Cambridge and Princeton at the junction of State Highway 47 (MN 47) and State Highway 95 (MN 95).

Nearby places also include Bradford, Dalbo, and Springvale County Park.

Pine Brook flows through the community.

This article about a location in Isanti County, Minnesota is a stub.