| Official Name: | Willow Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Cherokee |
| Area Total Km2: | 94.02 |
| Area Land Km2: | 93.91 |
| Area Water Km2: | 0.11 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.3 |
| Area Land Sq Mi: | 36.26 |
| Area Water Sq Mi: | 0.04 |
| Population As Of: | 2000 |
| Population Total: | 845 |
| Population Density Km2: | 9 |
| Population Density Sq Mi: | 23.3 |
| Elevation Footnotes: | [1] |
| Elevation M: | 358 |
| Elevation Ft: | 1175 |
| Coordinates: | 42.6019°N -95.6789°W |
| Blank Name: | FIPS code |
| Blank Info: | 19-94740[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0469002 |
Willow Township is one of sixteen townships in Cherokee County, Iowa, USA. As of the 2000 census, its population was 845.
Willow Township covers an area of 36.3sqmi and contains two incorporated settlements: Quimby and Washta. According to the USGS, it contains two cemeteries: Grandview and Sunset View.