| Official Name: | Johnson Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | LaGrange |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 35.63 |
| Area Land Sq Mi: | 33.27 |
| Area Water Sq Mi: | 2.36 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 3546 |
| Population Density Sq Mi: | 102 |
| Elevation Footnotes: | [2] |
| Elevation M: | 292 |
| Elevation Ft: | 958 |
| Coordinates: | 41.5731°N -85.3694°W |
| Blank Name: | FIPS code |
| Blank Info: | 18-38718[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 453514 |
Johnson Township is one of eleven townships in LaGrange County, Indiana. As of the 2020 census, its population was 3,546 (up from 3,392 at 2010[4]) and it contained 2,076 housing units.
Johnson Township was founded in 1837.[5]
According to the 2010 census, the township has a total area of, of which (or 93.38%) is land and (or 6.62%) is water.[4]