| Official Name: | Washington Township |
| Settlement Type: | Township |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Owen |
| Government Type: | Indiana township |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 47.57 |
| Area Land Sq Mi: | 47.4 |
| Area Water Sq Mi: | 0.17 |
| Area Water Percent: | 0.36 |
| Population As Of: | 2020 |
| Population Total: | 6387 |
| Population Density Sq Mi: | auto |
| Elevation M: | 192 |
| Elevation Ft: | 630 |
| Coordinates: | 39.2931°N -86.7569°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 47431, 47433, 47460 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 454011 |
Washington Township is one of thirteen townships in Owen County, Indiana, United States. As of the 2020 census, its population was 6,387 (up from 6,164 at 2010[1]) and it contained 2,616 housing units.[2]
Washington Township was organized in 1819. It was named for George Washington.[3]
The CCC Recreation Building-Nature Museum, McCormick's Creek State Park Entrance and Gatehouse, Secrest-Wampler House, and Stone Arch Bridge over McCormick's Creek are listed on the National Register of Historic Places.
According to the 2010 census, the township has a total area of, of which (or 99.64%) is land and (or 0.36%) is water.[1] The White River defines the northeastern border of the township.
(This list is based on USGS data and may include former settlements.)
The township contains these seven cemeteries: Blair, Chambersville, Mount Moriah, River Hill, Riverside, Rose and Witham.