| Official Name: | Washington Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Kansas |
| Subdivision Type2: | County |
| Subdivision Name2: | Chautauqua |
| Area Total Km2: | 122.12 |
| Area Land Km2: | 121.25 |
| Area Water Km2: | 0.87 |
| Area Total Sq Mi: | 47.15 |
| Area Land Sq Mi: | 46.81 |
| Area Water Sq Mi: | 0.34 |
| Area Water Percent: | 0.71 |
| Population As Of: | 2000 |
| Population Total: | 87 |
| Population Density Km2: | 0.7 |
| Population Density Sq Mi: | 1.9 |
| Elevation M: | 305 |
| Elevation Ft: | 1001 |
| Coordinates: | 37.1567°N -96.0381°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0469132 |
Washington Township is a township in Chautauqua County, Kansas, USA. As of the 2000 census, its population was 87.
Washington Township covers an area of 47.15sqmi and contains no incorporated settlements. According to the USGS, it contains three cemeteries: Burton, Riley and Todd.
The streams of California Creek, Cedar Creek, Davis Creek, Deadman Creek, East Branch Grant Creek, Middle Caney Creek, North Caney Creek and West Branch Grant Creek run through this township.