| 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: | Jackson |
| Area Total Km2: | 139.06 |
| Area Land Km2: | 138.88 |
| Area Water Km2: | 0.19 |
| Area Total Sq Mi: | 53.69 |
| Area Land Sq Mi: | 53.62 |
| Area Water Sq Mi: | 0.07 |
| Area Water Percent: | 0.14 |
| Population As Of: | 2000 |
| Population Total: | 516 |
| Population Density Km2: | 3.7 |
| Population Density Sq Mi: | 9.6 |
| Elevation M: | 310 |
| Elevation Ft: | 1017 |
| Coordinates: | 39.2292°N -95.9336°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0476262 |
Washington Township is a township in Jackson County, Kansas, USA. As of the 2000 census, its population was 516.
Washington Township covers an area of 53.69 square miles (139.06 square kilometers); of this, 0.07 square miles (0.19 square kilometers) or 0.14 percent is water. The streams of Dutch Creek, Illinois Creek, James Creek, Salt Creek and Sullivan Creek run through this township.
The township contains one cemetery, Delia.