| Official Name: | Lyons, South Dakota |
| Settlement Type: | unincorporated community |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Dakota |
| Subdivision Type2: | County |
| Subdivision Name2: | Minnehaha |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.30 |
| Area Land Km2: | 1.30 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.50 |
| Area Land Sq Mi: | 0.50 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 70 |
| Population Density Km2: | 53.78 |
| Population Density Sq Mi: | 139.17 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1568 |
| Coordinates: | 43.725°N -96.8661°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 57041 |
| Area Code: | 605 |
| Blank Name: | FIPS code |
| Blank Info: | 46-39780[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2813055 |
| Unit Pref: | Imperial |
Lyons is an unincorporated community and census-designated place (CDP) in Minnehaha County, South Dakota, United States. The CDP had a population of 70 at the 2020 census.[4] Lyons has been assigned the ZIP code of 57041.
Lyons was laid out in 1886, and named after Lyons Township.[5]