| Official Name: | Polk Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Atchison |
| Area Total Km2: | 161.41 |
| Area Land Km2: | 161.41 |
| Area Water Km2: | 0 |
| Area Water Percent: | 0 |
| Population As Of: | 2010 |
| Population Total: | 226 |
| Population Density Km2: | 1.4 |
| Elevation Footnotes: | [1] |
| Elevation M: | 303 |
| Elevation Ft: | 994 |
| Coordinates: | 40.5211°N -95.5106°W |
| Blank Name: | FIPS code |
| Blank Info: | 29-58700[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0766238 |
Polk Township is one of eleven townships in Atchison County, Missouri, United States. As of the 2010 census, its population was 226.[3]
Polk Township was established in 1845, and named after President James K. Polk.[4]
Polk Township covers an area of and contains no incorporated settlements. It contains six cemeteries: High Creek, Linden, St. John's Lutheran, Grange Hall, Noblitt-gibson, and Steiner.
The streams of McElroy Creek, High Creek, West High Creek, and Hall Branch run through this township.