| Official Name: | Fremont Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Clarke |
| Area Total Km2: | 93.99 |
| Area Land Km2: | 93.97 |
| Area Water Km2: | 0.02 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.29 |
| Area Land Sq Mi: | 36.28 |
| Area Water Sq Mi: | 0.01 |
| Area Water Percent: | 0.02 |
| Population As Of: | 2000 |
| Population Total: | 507 |
| Population Density Km2: | 5.4 |
| Population Density Sq Mi: | 14 |
| Elevation M: | 316 |
| Elevation Ft: | 1037 |
| Coordinates: | 41.1217°N -93.735°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0467877 |
Fremont Township is a township in Clarke County, Iowa, USA. As of the 2000 census, its population was 507.
Fremont Township covers an area of 36.29 square miles (93.99 km) and contains no incorporated settlements. According to the USGS, it contains four cemeteries: Fremont, Green, Jamison and Union Chapel.
The streams of South Squaw Creek and Walnut Creek run through this township.