Beaver Brook is a town in Washburn County, Wisconsin, United States.

The unincorporated communities of Beaver Brook and Chicago Junction are located in the town.

As of the census[2] of 2000, there were 643 people, 253 households, and 191 families residing in the town.

There were 280 housing units at an average density of 8.6 per square mile (3.3/km2).

20.6% of all households were made up of individuals, and 8.3% had someone living alone who was 65 years of age or older.