| Official Name: | Clark Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Atchison |
| Established Date: | 1845 |
| Area Total Km2: | 195.21 |
| Area Land Km2: | 194.38 |
| Area Water Km2: | 0.83 |
| Area Water Percent: | 0.43 |
| Population As Of: | 2010 |
| Population Total: | 895 |
| Population Density Km2: | 4.6 |
| Elevation Footnotes: | [1] |
| Elevation M: | 276 |
| Elevation Ft: | 906 |
| Coordinates: | 40.3333°N -95.4086°W |
| Blank Name: | FIPS code |
| Blank Info: | 29-13996[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0766232 |
Clark Township is one of eleven townships in Atchison County, Missouri, United States. As of the 2010 census, its population was 895.[3]
Clark Township was established in 1845.[4]
Clark Township covers an area of 195.2km2 and contains one incorporated settlement, Fairfax. It contains five cemeteries: Beck, Corning, Mount Hope, Pleasant Ridge and Pleasant Ridge.
The streams of Cow Branch, Old Channel Nishnabotna River and Rock Creek run through this township.
Clark Township contains one airport, Steele Airport.