| Official Name: | Jefferson Township, Butler County |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Butler |
| Area Total Km2: | 93.75 |
| Area Land Km2: | 93.75 |
| Area Water Km2: | 0 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.2 |
| Area Land Sq Mi: | 36.2 |
| Area Water Sq Mi: | 0 |
| Population As Of: | 2020 |
| Population Total: | 285 |
| Population Density Km2: | 3.0 |
| Population Density Sq Mi: | 7.9 |
| Elevation Footnotes: | [1] |
| Elevation M: | 290 |
| Elevation Ft: | 951 |
| Coordinates: | 42.6839°N -92.7278°W |
| Blank Name: | FIPS code |
| Blank Info: | 19-92211[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0468131 |
Jefferson Township is one of sixteen townships in Butler County, Iowa, United States. As of the 2020 census, its population was 285.[3]
The first white child was born in Jefferson Township in 1855.[4]
Jefferson Township covers an area of 36.2sqmi and contains no incorporated settlements. According to the USGS, it contains three cemeteries: Butler Center, Coster and New Albion.