| Official Name: | Clay Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Hamilton |
| Government Type: | Indiana township |
| Established Title1: | Settled |
| Established Date1: | 1802 |
| Established Title2: | Township organized |
| Established Date2: | 1833 |
| Area Total Sq Mi: | 50.18 |
| Area Land Sq Mi: | 49.09 |
| Area Water Sq Mi: | 1.09 |
| Area Water Percent: | 2.17 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 99093 |
| Population Density Sq Mi: | 2,014.1 |
| Elevation M: | 257 |
| Elevation Ft: | 843 |
| Coordinates: | 39.9633°N -86.1483°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 46032, 46033, 46074, 46077, 46082, 46260, 46280, 46290 |
| Area Code: | 317, 463 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0453209 |
Clay Township is one of nine townships in Hamilton County, Indiana, United States. As of the 2010 census, its population was 83,293 and it contained 32,375 housing units.[2] Since the annexation of Home Place, Indiana, Carmel is now completely coterminous with the township.[3]
Clay Township was organized in 1833.[4]
Micah Newby House was listed on the National Register of Historic Places in 1986.
According to the 2010 census, the township has a total area of, of which (or 97.83%) is land and (or 2.17%) is water.[2] The streams of Almond Ditch, Ams Run, Blue Woods Creek, Boone Creek, Center Creek, Clay Creek, Cool Creek, Elliot Creek, Lily Vestal Drain, Henley Creek, Highway Run, Hot Lick Creek, Kirkendall Creek, Lion Creek, Little Cool Creek, Long Branch, Mitchener Ditch, Spring Mill Run, Well Run, Will Creek, and Witt Creek run through this township.
The township contains six cemeteries: Calvary, Carmel, Farley, Pleasant Grove, Poplar Ridge, and White Chapel.