| Official Name: | Ohio Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Spencer |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 68.16 |
| Area Land Sq Mi: | 67.63 |
| Area Water Sq Mi: | 0.54 |
| Population As Of: | 2020 |
| Population Total: | 4842 |
| Population Density Sq Mi: | auto |
| Elevation Footnotes: | [1] |
| Elevation M: | 129 |
| Elevation Ft: | 423 |
| Coordinates: | 37.8833°N -87.0978°W |
| Blank Name: | FIPS code |
| Blank Info: | 18-56160[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 453684 |
Ohio Township is one of nine townships in Spencer County, Indiana, U.S.A. As of the 2020 census, its population was 4,842 and it contained 2,207 housing units.[3] Ohio Township contains the city of Rockport.
Ohio Township was first settled in about 1818.[4]
According to the 2010 census, the township has a total area of, of which (or 99.22%) is land and (or 0.79%) is water.[5]