| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sibuenes | city | Loreto | Peru | -1.65 | -73.60 | 393 | 0 |
| Sicuanga | city | Loreto | Peru | -3.67 | -77.32 | 830 | 0 |
| Siete de Junio | city | Loreto | Peru | -5.33 | -75.86 | 830 | 149 |
| Siete de Junio | city | Loreto | Peru | -4.49 | -76.06 | 830 | 149 |
| Siete de Junio | city | Loreto | Peru | -3.95 | -71.15 | 314 | 149 |
| Siete de Junio | city | Loreto | Peru | -2.41 | -72.55 | 334 | 0 |
| Siete de Mayo | city | Loreto | Peru | -2.45 | -72.90 | 337 | 0 |
| Sihuin | city | Loreto | Peru | -3.20 | -76.45 | 830 | 0 |
| Sinchi Roca | city | Loreto | Peru | -5.04 | -73.84 | 383 | 1667 |
| Sinchiyacu | city | Loreto | Peru | -3.12 | -76.68 | 830 | 0 |
| Siringuero | city | Loreto | Peru | -3.83 | -73.73 | 403 | 0 |