Clark Township is one of seven townships in Perry County, Indiana, United States.

As of the 2020 census, its population was 1,063 and it contained 489 housing units.

[3] According to the 2010 census, the township has a total area of 74.84 square miles (193.8 km2), of which 74.59 square miles (193.2 km2) (or 99.67%) is land and 0.26 square miles (0.67 km2) (or 0.35%) is water.

[4] (This list is based on USGS data and may include former settlements.)

The township contains these fourteen cemeteries: Beard, Comstock, Crooks Thom, Enlow, Fox Ridge, Hobbs, Lanman, Lasher, Mount Pleasant, Sigler, Sigler, Stapleton, Taylor and Tenn Beard.