Tonti is an unincorporated community in Tonti Township, Marion County, Illinois, United States. The community of Tonti is now little more than a bend in the road and a sign, near where the Illinois Central Railroad tracks cross Interstate 57.
Tonti Township and the community of Tonti was named in honor of Henri de Tonti, an early Italian/French explorer of Illinois.
- ^ "Tonti, Illinois". Geographic Names Information System, U.S. Geological Survey.
- ^ Marion County, Illinois-map
- ^ 'Brinkerhoff's History Marion County, Illinois,' J.H.G. Brinkerhoff, B.F. & Company, Publishers, Induanapolis, Indiana: 1909, Tonti Township, pg. 158-162