Cass is an unincorporated community in Cass Township, Sullivan County, in the U.S. state of Indiana.

[3] The community is part of the Terre Haute Metropolitan Statistical Area.

A post office was established at Cass in 1877, and remained in operation until it was discontinued in 1955.

The United States Census Bureau delineated Cass as a census designated place in the 2022 American Community Survey.

This Sullivan County, Indiana location article is a stub.