| Official Name: | Jackson Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Decatur |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 40.29 |
| Area Land Sq Mi: | 40.27 |
| Area Water Sq Mi: | 0.02 |
| Population As Of: | 2020 |
| Population Total: | 938 |
| Population Density Sq Mi: | auto |
| Elevation Footnotes: | [1] |
| Elevation M: | 244 |
| Elevation Ft: | 801 |
| Coordinates: | 39.1983°N -85.6414°W |
| Blank Name: | FIPS code |
| Blank Info: | 18-36918[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 453439 |
Jackson Township is one of nine townships in Decatur County, Indiana. As of the 2020 census, its population was 938 (down from 988 at 2010[3]) and it contained 403 housing units.[4]
Jackson Township was organized in 1834.[5]
According to the 2010 census, the township has a total area of, of which (or 99.95%) is land and (or 0.05%) is water.[3]
(This list is based on USGS data and may include former settlements.)
The township contains six cemeteries: Lower Union, Mount Olivet, Mount Pisgah, Shirk, Wesley and Wynn.