| Official Name: | Johnstown, Indiana |
| Pushpin Map: | Indiana#USA |
| Pushpin Label: | Johnstown |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Greene |
| Subdivision Type3: | Township |
| Subdivision Name3: | Jefferson |
| Coordinates: | 39.1667°N -87.0089°W |
| Elevation Ft: | 518 |
| Postal Code Type: | ZIP code |
| Postal Code: | 47471 |
| Blank Name: | FIPS code |
| Blank Info: | 18-38808[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 437069 |
Johnstown is an unincorporated community in Jefferson Township, Greene County, Indiana.