| Official Name: | Waterloo, Johnson County, Indiana |
| Pushpin Map: | Indiana#USA |
| Pushpin Label: | Waterloo |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Johnson |
| Subdivision Type3: | Township |
| Subdivision Name3: | White River |
| Coordinates: | 39.5625°N -86.1975°W |
| Elevation Ft: | 804 |
| Postal Code Type: | ZIP code |
| Postal Code: | 46143 |
| Blank Name: | FIPS code |
| Blank Info: | 18-81325[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 445540 |
Waterloo is an unincorporated community in White River Township, Johnson County, Indiana.