| Official Name: | Wilmington Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | DeKalb |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 35.98 |
| Area Land Sq Mi: | 35.97 |
| Area Water Sq Mi: | 0.01 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 3995 |
| Population Density Sq Mi: | 114.8 |
| Elevation Footnotes: | [2] |
| Elevation M: | 259 |
| Elevation Ft: | 850 |
| Coordinates: | 41.3992°N -84.9078°W |
| Blank Name: | FIPS code |
| Blank Info: | 18-84590[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 454061 |
Wilmington Township is one of fifteen townships in DeKalb County, Indiana. As of the 2020 census, its population was 3,995 (down from 4,128 at the 2010 census[4]) and it contained 1,600 housing units.
Wilmington Township was organized in 1837.[5] [6]
According to the 2010 census, the township has a total area of, of which (or 99.97%) is land and (or 0.03%) is water.[4]
The township contains two cemeteries: Kraft and Krontz.