| Official Name: | Washington Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Knox |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 49.09 |
| Area Land Sq Mi: | 48.84 |
| Area Water Sq Mi: | 0.24 |
| Population As Of: | 2020 |
| Population Total: | 2256 |
| Population Density Sq Mi: | auto |
| Elevation Footnotes: | [1] |
| Elevation M: | 169 |
| Elevation Ft: | 554 |
| Coordinates: | 38.7636°N -87.3972°W |
| Blank Name: | FIPS code |
| Blank Info: | 18-80738[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 454002 |
Washington Township is one of ten townships in Knox County, Indiana. As of the 2020 census, its population was 2,256 (slightly down from 2,286 at 2010[3]) and it contained 1,040 housing units.[4]
It is named for George Washington.[5]
Enoco Coal Mine was added to the National Register of Historic Places in 2010.[6]
According to the 2010 census, the township has a total area of, of which (or 99.49%) is land and (or 0.49%) is water.[3]