| Official Name: | Clay Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Atchison |
| Area Total Km2: | 108.85 |
| Area Land Km2: | 108.80 |
| Area Water Km2: | 0.06 |
| Area Water Percent: | 0.05 |
| Population As Of: | 2010 |
| Population Total: | 1798 |
| Population Density Km2: | 16.5 |
| Elevation Footnotes: | [1] |
| Elevation M: | 319 |
| Elevation Ft: | 1047 |
| Coordinates: | 40.4222°N -95.5175°W |
| Blank Name: | FIPS code |
| Blank Info: | 29-14284[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0766233 |
Clay Township is one of eleven townships in Atchison County, Missouri, United States. As of the 2010 census, its population was 1,798.[3]
Clay Township was organized in 1856, and named after Henry Clay of Kentucky.[4]
Clay Township covers an area of 108.9km2 and contains one incorporated settlement, Rock Port (the county seat). It contains five cemeteries: Bush, Green Hill, Hunter, Millsap and Smith.
The streams of Boney Branch, Turkey Creek and Volger Branch run through this township.
Clay Township contains one airport, Luhrs Landing Strip.