Duff is an unincorporated community in Patoka Township, Dubois County, in the U.S. state of Indiana.

[1] Duff was platted in 1883 by Robert Small.

B. Edmonston, who had the nickname "Colonel Duff".

[3] A post office was established at Duff in 1868, and remained in operation until it was discontinued in 1955.

This Dubois County, Indiana location article is a stub.