| Official Name: | Clark Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Montgomery |
| Government Type: | Indiana township |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.31 |
| Area Land Sq Mi: | 36.29 |
| Area Water Sq Mi: | 0.02 |
| Area Water Percent: | 0.06 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 1841 |
| Population Density Sq Mi: | auto |
| Elevation Footnotes: | [2] |
| Elevation M: | 268 |
| Elevation Ft: | 879 |
| Coordinates: | 39.9058°N -86.7583°W |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 46172, 47954, 47968 |
| Area Code: | 765 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 453202 |
Clark Township is one of eleven townships in Montgomery County, Indiana, United States. As of the 2020 census, its population was 1,841 (representing no change from 2010[3]) and it contained 766 housing units.
Clark Township was founded in 1830.[4]
According to the 2010 census, the township has a total area of, of which (or 99.94%) is land and (or 0.06%) is water.[3]
The township contains these six cemeteries: Harshbarger, Hicks, Inlow, Mount Pleasant, Stoner and Wesley.
Clark Township residents are served by the Ladoga-Clark Township Public Library.[5]