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.
Clark Township was named for Robert Clark, a pioneer settler.
According to the 2010 census, the township has a total area of , of which (or 99.67%) is land and (or 0.35%) is water.
(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.