Richland Township is one of twelve townships in Jay County, Indiana, United States. As of the 2020 census, its population was 4,005 (down from 4,518 at 2010) and it contained 1,948 housing units.
Richland Township was organized in 1838.
According to the 2010 census, the township has a total area of , of which (or 99.89%) is land and (or 0.11%) is water. The streams of Boot Run, Redkey Run and Thong Run run through this township.
The township contains one cemetery, Hillcrest.