| 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: | Carroll |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 29.84 |
| Area Land Sq Mi: | 29.83 |
| Area Water Sq Mi: | 0.01 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 551 |
| Population Density Sq Mi: | auto |
| Elevation Footnotes: | [2] |
| Elevation M: | 213 |
| Elevation Ft: | 699 |
| Coordinates: | 40.6522°N -86.4203°W |
| Blank Name: | FIPS code |
| Blank Info: | 18-80414[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 453985 |
Washington Township is one of fourteen townships in Carroll County, Indiana. As of the 2020 census, its population was 551 (slightly up from 549 at 2010[4]) and it contained 297 housing units.
Washington Township was organized in 1835.[5]
According to the 2010 census, the township has a total area of, of which (or 99.97%) is land and (or 0.03%) is water.[4]
The township contains two cemeteries: Hopewell and Rock Creek.