| Official Name: | Otter Creek Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Ripley |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 41.69 |
| Area Land Sq Mi: | 41.66 |
| Area Water Sq Mi: | 0.02 |
| Population As Of: | 2020 |
| Population Total: | 1319 |
| Population Density Sq Mi: | auto |
| Elevation Footnotes: | [1] |
| Elevation M: | 265 |
| Elevation Ft: | 869 |
| Coordinates: | 39.0947°N -85.3911°W |
| Area Code: | 812 |
| Blank Name: | FIPS code |
| Blank Info: | 18-57276[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 453698 |
Otter Creek Township is one of eleven townships in Ripley County, Indiana. As of the 2020 census, its population was 1,319 (down from 1,410 at 2010[3]) and it contained 579 housing units.[4]
According to the 2010 census, the township has a total area of, of which (or 99.93%) is land and (or 0.05%) is water.[3]