| Official Name: | Brookside |
| Pushpin Map: | Wisconsin#USA |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Oconto |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 620 |
| Coordinates: | 44.8047°N -87.9978°W |
| Area Code: | 920 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1562245 |
Brookside is an unincorporated community located in the town of Pensaukee, Oconto County, Wisconsin, United States. Brookside is located on County Highway J near U.S. Route 41, 8.7miles southwest of Oconto.[1]
Brookside was named from its location at a brook.[2] The town did have a post office that was established in 1871 but it was discontinued in late 1925. [3]