| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Rio Sagrado | city | Parana | Brazil | -25.56 | -48.81 | 830 | 1309 |
| Rio Sagrado | city | Parana | Brazil | -25.53 | -48.78 | 393 | 2509 |
| Rio Sagrado | city | Parana | Brazil | -25.58 | -48.80 | 1669 | 1175 |
| Rio Santo | city | Bahia | Brazil | -14.07 | -39.37 | 830 | 963 |
| Rio Santo Aleixo - Cascata | city | Pernambuco | Brazil | -8.09 | -35.02 | 36 | 339056 |
| Rio Scharlach | city | Santa Catarina | Brazil | -26.94 | -49.59 | 1187 | 616 |
| Rio Sena | city | Bahia | Brazil | -12.88 | -38.47 | 101 | 628623 |
| Rio Seripe | city | Rio de Janeiro | Brazil | -22.53 | -41.95 | 0 | 21472 |
| Rio Sinho | city | Amazonas | Brazil | -9.48 | -66.80 | 318 | 0 |
| Rio Sobrado | city | Parana | Brazil | -26.05 | -49.28 | 3349 | 3044 |
| Rio Sono | city | Tocantins | Brazil | -9.34 | -47.90 | 830 | 236 |
| Rio Sul | city | Santa Catarina | Brazil | -27.21 | -49.63 | 1669 | 33077 |
| Rio Sêco | city | Rio de Janeiro | Brazil | -22.77 | -42.67 | 830 | 15341 |
| Rio Sêco | city | Bahia | Brazil | -14.95 | -41.97 | 1932 | 9287 |
| Rio Sêco | city | Bahia | Brazil | -12.65 | -39.60 | 830 | 1496 |
| Rio Sêco | city | Bahia | Brazil | -12.42 | -39.77 | 830 | 1958 |
| Rio Sêco | city | Bahia | Brazil | -12.35 | -38.80 | 830 | 37864 |