| Official Name: | Eel River Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Hendricks |
| Government Type: | Indiana township |
| Area Total Km2: | 110.18 |
| Area Land Km2: | 110.18 |
| Area Water Km2: | 0 |
| Area Total Sq Mi: | 42.54 |
| Area Land Sq Mi: | 42.54 |
| Area Water Sq Mi: | 0 |
| Area Water Percent: | 0 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 1707 |
| Population Density Km2: | 15.1 |
| Population Density Sq Mi: | 39.1 |
| Elevation M: | 280 |
| Elevation Ft: | 919 |
| Coordinates: | 39.8719°N -86.6306°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0453274 |
Eel River Township is one of twelve townships in Hendricks County, Indiana, United States. As of the 2010 census, its population was 1,662.[2]
Eel River Township was organized in about 1828.[3]
Eel River Township covers an area of . The streams of East Fork Big Walnut Creek, Hunt Creek, Middle Fork Big Walnut Creek and Ramp Run run through this township.
The township contains sixteen cemeteries: Adams, Campbell, Devenport, Fairview, Fleece, Fullen, Gossett, Hypes, Kidd Farm, North Salem Baptist, Page, Pennington, Richardson, Roundtown, Trotter and Zimmerman.