Adams Township is one of nine townships in Decatur County, Indiana, United States. As of the 2020 census, its population was 1,825 (down from 1,944 at 2010) and it contained 818 housing units.
Adams Township was organized in 1822.
According to the 2010 census, the township has a total area of , of which (or 99.91%) is land and (or 0.12%) is water.
(This list is based on USGS data and may include former settlements.)
The township contains four cemeteries: Arnold, Mount Hebron, Shiloh and Union.