| Official Name: | Afton Township, South Dakota |
| Settlement Type: | Township |
| Pushpin Map: | South Dakota#USA |
| Pushpin Label: | Afton Township |
| Pushpin Map Caption: | Location within South Dakota##Location within the United States |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Dakota |
| Subdivision Type2: | County |
| Subdivision Name2: | Brookings |
| Area Total Km2: | 92.4 |
| Area Land Km2: | 92.4 |
| Area Water Km2: | 0.0 |
| Area Total Sq Mi: | 35.7 |
| Area Land Sq Mi: | 35.7 |
| Area Water Sq Mi: | 0.0 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 212 |
| Population Density Km2: | auto |
| Population Density Sq Mi: | auto |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 523 |
| Elevation Ft: | 1716 |
| Coordinates: | 44.4092°N -96.7172°W |
| Area Code: | 605 |
| Blank Name: | FIPS code |
| Blank Info: | 46-00380[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1267977[3] |
Afton Township is a township in Brookings County, South Dakota, United States. The population was 224 in the 2000 census.