Tonti is an unincorporated community in Tonti Township, Marion County, Illinois, United States.

[1] 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.

[3] On June 10, 1971, Tonti was the site of the 1971 Salem, Illinois, derailment which was a derailment of Amtrak's City of New Orleans passenger train.

An investigation by the National Transportation Safety Board (NTSB) found that the derailment was caused by a false flange on a flat wheel caused by a seized axle bearing.

This Marion County, Illinois location article is a stub.