| Official Name: | Spencer Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Jennings |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 49.23 |
| Area Land Sq Mi: | 48.91 |
| Area Water Sq Mi: | 0.32 |
| Area Water Percent: | 0.65 |
| Population As Of: | 2020 |
| Population Total: | 2416 |
| Population Density Sq Mi: | auto |
| Elevation M: | 197 |
| Elevation Ft: | 646 |
| Coordinates: | 38.9733°N -85.7447°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0453861 |
Spencer Township is one of eleven townships in Jennings County, Indiana, United States. As of the 2020 census, its population was 2,416 (up from 2,326 at 2010[1]) and it contained 938 housing units.[2]
According to the 2010 census, the township has a total area of, of which (or 99.35%) is land and (or 0.65%) is water.[1] The streams of Indian Creek, Little Mutton Creek, Powder Creek, Storm Creek, Tea Creek and Twomile Creek run through this township.
The township contains eight cemeteries: Barkman, Hunt, Myers, Saint Catherines, Saint James, Sixmile, Whitcomb and Wohrer.