Bourbonnais is a village in Kankakee County, Illinois, United States. The population was 15,256 at the 2000 census.
The village is named after François Bourbonnais, Sr., a fur trapper, hunter and agent of the American Fur Company, who had married a Native American woman and arrived in the area near the fork of two major Indian trails and the Kankakee River circa 1830. John Jacob Astor had founded the company in 1808, and when the United States banned foreign (i.e. British and Canadian companies such as the Hudson's Bay Company) from competing in the country after the War of 1812, it grew. By 1830, it had a near monopoly of fur trading in the midwest, but the number of local trappable wild animals had declined.In 1853, the Illinois legislature split Iroquois County, and Bourbonnais Grove became part of new Kankakee County. After a referendum in 1875, the settlement incorporated as the Village of Bourbonnais, with George R. LeTourneau as its first mayor.