| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Siempre Viva | city | Amazonas | Peru | -5.75 | -78.67 | 2575 | 2460 |
| Sienegal | city | Piura | Peru | -5.88 | -79.49 | 9228 | 2479 |
| Sienego | city | Lambayeque | Peru | -6.57 | -79.82 | 830 | 44915 |
| Sienja | city | Arequipa | Peru | -14.94 | -71.87 | 15108 | 438 |
| Sierra de Huaylillas | city | Tacna | Peru | -17.98 | -69.77 | 13428 | 306 |
| Siese | city | Piura | Peru | -5.02 | -79.55 | 9228 | 3620 |
| Siese Chico | city | Piura | Peru | -5.04 | -79.56 | 10068 | 4703 |
| Siete | city | Ica | Peru | -14.92 | -75.02 | 1669 | 631 |
| Siete | city | Junin | Peru | -11.35 | -76.21 | 14268 | 0 |
| Siete Casas | city | Junin | Peru | -11.05 | -75.47 | 3375 | 2682 |
| Siete Hermanos | city | Pasco | Peru | -9.86 | -74.77 | 1669 | 149 |
| Siete Lagunas | city | Amazonas | Peru | -6.83 | -77.88 | 13707 | 298 |
| Siete Toldos | city | Moquegua | Peru | -16.66 | -71.34 | 10068 | 151 |
| 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 Junio | city | Ancash | Peru | -9.06 | -78.58 | 36 | 9203 |
| Siete de Mayo | city | Loreto | Peru | -2.45 | -72.90 | 337 | 0 |
| Siete de Octubre | city | Huanuco | Peru | -8.81 | -76.12 | 2057 | 1192 |