| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Puerto Salina | city | Piura | Peru | -5.85 | -80.93 | 3 | 0 |
| Puerto Salvatierra | city | Loreto | Peru | -3.50 | -76.52 | 830 | 0 |
| Puerto Samanco | city | Ancash | Peru | -9.26 | -78.50 | 59 | 2817 |
| Puerto Samaren | city | Amazonas | Peru | -5.13 | -78.34 | 839 | 596 |
| Puerto San Agustin | city | Loreto | Peru | -2.78 | -71.37 | 328 | 0 |
| Puerto San Juan | city | Ica | Peru | -15.37 | -75.17 | 22 | 203 |
| Puerto San Juan | city | Ica | Peru | -15.30 | -75.17 | 830 | 345 |
| Puerto San Juan | city | Amazonas | Peru | -5.79 | -78.32 | 1669 | 5087 |
| Puerto San Martin | city | Ica | Peru | -13.80 | -76.29 | 0 | 122 |
| Puerto San Nicolas | city | Ica | Peru | -15.26 | -75.23 | 13 | 14879 |
| Puerto Sangama | city | San Martin | Peru | -6.77 | -76.31 | 853 | 2421 |
| Puerto Santa | city | Ancash | Peru | -8.99 | -78.65 | 3 | 27932 |
| Puerto Silva | city | Ucayali | Peru | -9.08 | -73.05 | 830 | 149 |
| Puerto Sol | city | Loreto | Peru | -4.61 | -73.56 | 370 | 1418 |
| Puerto Solano | city | Cajamarca | Peru | -5.32 | -78.79 | 1669 | 4015 |
| Puerto Soledad | city | Loreto | Peru | -3.64 | -72.35 | 331 | 298 |
| Puerto Solitario | city | Loreto | Peru | -3.81 | -75.10 | 830 | 0 |
| Puerto Supay | city | Loreto | Peru | -5.12 | -73.52 | 344 | 0 |
| Puerto Supe | city | Lima | Peru | -10.80 | -77.74 | 830 | 33808 |