| 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: | Porter |
| Government Type: | Indiana township |
| Area Total Km2: | 76.39 |
| Area Land Km2: | 76.39 |
| Area Water Km2: | 0 |
| Area Total Sq Mi: | 29.5 |
| Area Land Sq Mi: | 29.5 |
| Area Water Sq Mi: | 0 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 5799 |
| Population Density Km2: | 62.64 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Footnotes: | [2] |
| Elevation M: | 235 |
| Elevation Ft: | 771 |
| Coordinates: | 41.4792°N -86.9831°W |
| Area Code: | 219 |
| Blank Name: | FIPS code |
| Blank Info: | 18-80954[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 454014 |
Washington Township is one of twelve townships in Porter County, Indiana. As of the 2010 census, its population was 4,785.[4]
Washington Township was organized in 1836.[5]
There are no incorporated communities in the township.[6]
Washington Township is served by the East Porter County School Corporation. Their high school is Washington Township Middle-High School, located on State Route 2, east of Valparaiso.