Sugar Bush is an unincorporated community located in the town of Humboldt, Brown County, Wisconsin, United States. Sugar Bush is located at the junctions of County Highways N and P, east of Green Bay. The name was given due to a sizeable grove of sugar maple trees there. The hamlet was once known as Schiller. St. Hubert Parish of Sugarbush was established in 1872 as a mission church serving the Walloon Belgian community.
In 1887 Telesphore Charlier, who operated a hotel, bar, and livery stable, opened a post office.