Places beginning with FO in South Dakota, United States
- Foley
- Folsom
- Forbes, Township of
- Fordham, Township of
- Forestburg
- Forest City
- Forest City (historical), Township of
- Forest City, Township of
- Forney (historical), Township of
- Fort Pierre
- Fort Pierre, City of
- Fort Randall
- Fort Thompson
- Fort, Township of
- Foster, Township of
- Foster, Township of
- Foster, Township of
- Fountain, Township of
- Fourmile
- Fox Ridge
- Foxton, Township of