| Official Name: | Summerset Township, Adair County |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Adair |
| Area Total Km2: | 92.75 |
| Area Land Km2: | 92.34 |
| Area Water Km2: | 0.41 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 35.81 |
| Area Land Sq Mi: | 35.65 |
| Area Water Sq Mi: | 0.16 |
| Population As Of: | 2010 |
| Population Total: | 996 |
| Population Density Km2: | 10.8 |
| Population Density Sq Mi: | 27.9 |
| Elevation Footnotes: | [1] |
| Elevation M: | 384 |
| Elevation Ft: | 1260 |
| Coordinates: | 41.2881°N -94.5258°W |
| Blank Name: | FIPS code |
| Blank Info: | 19-94032[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0468759 |
Summerset Township is one of seventeen townships in Adair County, Iowa, USA. At the 2010 census, its population was 996.[3]
Summerset Township was organized in 1856.[4]
Summerset Township covers an area of 35.81sqmi and contains one incorporated settlement, Fontanelle. According to the USGS, it contains one cemetery, Fontanelle.