Mongo is an unincorporated community in Springfield Township, LaGrange County, Indiana.

Although An Illustrated Historical Atlas of LaGrange County, Indiana (1874) translates the native name as 'Big Squaw Village', it is thought to be a corruption of the Miami-Illinois maankwahkionka, meaning 'in the Loon Land'.

[5][6] The John O'Ferrell Store was listed in the National Register of Historic Places in 1975.

[7] Mongo is the site of "The Olde Store" (aka "John O'Ferrell Store" or the "Mongo Trading Post"), on the National Register of Historic Places.

This LaGrange County, Indiana location article is a stub.