| Official Name: | Franklin Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Decatur |
| Area Total Km2: | 93.74 |
| Area Land Km2: | 93.67 |
| Area Water Km2: | 0.07 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.19 |
| Area Land Sq Mi: | 36.17 |
| Area Water Sq Mi: | 0.03 |
| Area Water Percent: | 0.07 |
| Population As Of: | 2000 |
| Population Total: | 370 |
| Population Density Km2: | 4 |
| Population Density Sq Mi: | 10.2 |
| Elevation M: | 334 |
| Elevation Ft: | 1096 |
| Coordinates: | 40.8558°N -93.73°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0467853 |
Franklin Township is a township in Decatur County, Iowa, United States. As of the 2000 census, its population was 370.
Franklin Township covers an area of 36.19 square miles (93.74 square kilometers); of this, 0.03 square miles (0.07 square kilometers) or 0.07 percent is water.
The township contains two cemeteries: Johnson and Kline.