| Official Name: | Byron Township, Buchanan County |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Buchanan |
| Area Total Km2: | 94.68 |
| Area Land Km2: | 94.68 |
| Area Water Km2: | 0 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.55 |
| Area Land Sq Mi: | 36.55 |
| Area Water Sq Mi: | 0 |
| Population As Of: | 2000 |
| Population Total: | 1063 |
| Population Density Km2: | 11.2 |
| Population Density Sq Mi: | 29.1 |
| Elevation Footnotes: | [1] |
| Elevation M: | 311 |
| Elevation Ft: | 1020 |
| Coordinates: | 42.5156°N -91.7917°W |
| Blank Name: | FIPS code |
| Blank Info: | 19-90432[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0467517 |
Byron Township is one of sixteen townships in Buchanan County, Iowa, United States. As of the 2000 census, its population was 1,063. Byron Township was organized in 1856.[3]
Byron Township covers an area of 36.55sqmi and contains one incorporated settlement, Winthrop. According to the USGS, it contains three cemeteries: Byron, Fairview and Payne. The former townsite of Doris also lies in the township.