| Official Name: | Warren Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Story |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 35.6 |
| Area Land Sq Mi: | 35.6 |
| Area Water Sq Mi: | 0.0 |
| Area Water Percent: | 0.0 |
| Population As Of: | 2000 |
| Population Total: | 562 |
| Population Density Sq Mi: | 16 |
| Elevation Ft: | 1086 |
| Coordinates: | 42.1653°N -93.3981°W |
| Postal Code Type: | ZIP Code |
| Postal Code: | 50154 |
| Area Code: | 515 |
Warren Township is a township in Story County, Iowa, United States. As of the 2000 census, its population was 562.
Warren Township covers an area of 35.6sqmi and contains the incorporated town of McCallsburg. According to the USGS, it contains two cemeteries: the Bergen Cemetery and the McCallsburg Cemetery.
County Road S27 runs north and south through the township and County Road E18 runs east–west.
The East Indian Creek flows through the township.
Warren Township is adjacent to Howard, Lincoln and Richland townships.