Places beginning with RO in South Dakota, United States
- Roberts County
- Robins, Township of
- Rochford
- Rochford (historical), Township of
- Rock Creek (historical), Township of
- Rock Creek, Township of
- Rockdale, Township of
- Rockerville
- Rockford, Township of
- Rockham
- Rockham, Town of
- Rockport Colony
- Rockyford
- Rocky Ford
- Rocky Ford, Township of
- Rolling Green, Township of
- Rolling Green, Township of
- Rome, Township of
- Rome, Township of
- Rondell (historical), Township of
- Roscoe
- Roscoe, City of
- Rosebud
- Rosebud, Township of
- Rosedale, Township of
- Rosedale, Township of
- Rosedale, Township of
- Rosefield (historical), Township of
- Rosefield, Township of
- Rose Hill, Township of
- Roseland, Township of
- Rosenthal, Township of
- Rose, Township of
- Rosette, Township of
- Rosholt
- Rosholt, Town of
- Roslyn
- Roslyn, Town of
- Roswell
- Roswell, Town of
- Roswell, Township of
- Roubaix
- Roundup, Township of
- Rouse, Township of
- Rousseau
- Rousseau, Township of
- Rowena
- Rowe, Township of
- Royal (historical), Township of
- Roy, Township of