| 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: | Grant |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 34.29 |
| Area Land Sq Mi: | 34.14 |
| Area Water Sq Mi: | 0.16 |
| Area Water Percent: | 0.47 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 3433 |
| Population Density Sq Mi: | 111.4 |
| Elevation M: | 257 |
| Elevation Ft: | 843 |
| Coordinates: | 40.6172°N -85.6169°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0453996 |
Washington Township is one of thirteen townships in Grant County, Indiana, United States. As of the 2020 census, its population was 3,433 (down from 3,803 at 2010[2]) and it contained 1,636 housing units.
The Dr. Richard Davis House was listed on the National Register of Historic Places in 1997.
According to the 2010 census, the township has a total area of, of which (or 99.56%) is land and (or 0.47%) is water.[2] The streams of Big Lick Creek and Hummel Creek run through this township.
(This list is based on USGS data and may include former settlements.)
The township contains three cemeteries: Fairview, Hummel-Lobdell and Salem.