| Official Name: | Washington Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Clinton |
| Area Total Km2: | 82.98 |
| Area Land Km2: | 82.98 |
| Area Water Km2: | 0 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 32.04 |
| Area Land Sq Mi: | 32.04 |
| Area Water Sq Mi: | 0 |
| Area Water Percent: | 0 |
| Population As Of: | 2000 |
| Population Total: | 460 |
| Population Density Km2: | 5.5 |
| Population Density Sq Mi: | 14.4 |
| Elevation M: | 254 |
| Elevation Ft: | 833 |
| Coordinates: | 41.9119°N -90.4806°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0468911 |
Washington Township is a township in Clinton County, Iowa, United States. As of the 2000 census, its population was 460.
Washington Township was organized in 1856.[1] It is named for George Washington.[2]
Washington Township covers an area of 32.04sqmi and contains no incorporated settlements. According to the USGS, it contains four cemeteries: Clinton County Farm, Rossiter, Saint Patricks and White.