Manteno is a village in Kankakee County, Illinois, United States. The population was 9,204 at the 2010 census, up from 6,414 at the 2000 census. It is part of the Kankakee-Bourbonnais-Bradley Metropolitan Statistical Area.
Manteno was named after Manteno (Mawteno), a daughter of Francois Bourbonnais, Jr. (thus her grandfather was the man for whom the city of Bourbonnais was named) and his Potawatomi wife. A Potawatomi name, it is a possible anglicization of manito or manitou, a Potawatomi word for "spirit". Oliver W. Barnard, an early settler in this area, spelled her name "Mantenau" in one of his books. Other 19th century books spell it "Mawteno" and "Manteno".
Because she was a Métis, Manteno (spelled "Monteno" in the treaty, but considered incorrect, as the clerk also misspelled "Bourbonnais") was given a section of land, now part of northeastern Kankakee County, by the treaty of Treaty of Tippecanoe on December 20, 1832.
Both Kankakee and Iroquois counties were part of Will County, Illinois, before the State Legislature granted a plea of Kankakee's citizens and permitted them to incorporate in 1853.