| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sacanche | city | San Martin | Peru | -7.07 | -76.71 | 1112 | 6302 |
| Sacareto | city | San Martin | Peru | -6.30 | -75.73 | 830 | 666 |
| San Agustin | city | San Martin | Peru | -8.17 | -76.46 | 1922 | 4279 |
| San Andres | city | San Martin | Peru | -6.79 | -76.56 | 1669 | 3072 |
| San Antonio | city | San Martin | Peru | -8.51 | -76.41 | 2611 | 538 |
| San Antonio | city | San Martin | Peru | -6.42 | -76.40 | 2509 | 17243 |
| San Antonio | city | San Martin | Peru | -6.92 | -76.39 | 951 | 4113 |
| San Antonio | city | San Martin | Peru | -8.53 | -76.49 | 2509 | 3185 |
| San Antonio | city | San Martin | Peru | -8.57 | -76.54 | 2591 | 959 |
| San Antonio | city | San Martin | Peru | -5.70 | -77.49 | 2900 | 1531 |
| San Antonio | city | San Martin | Peru | -6.73 | -76.68 | 1669 | 1951 |
| San Antonio | city | San Martin | Peru | -6.69 | -76.72 | 1669 | 3588 |
| San Antonio | city | San Martin | Peru | -6.86 | -76.35 | 875 | 4224 |
| San Antonio | city | San Martin | Peru | -7.26 | -76.74 | 1040 | 8346 |
| San Antonio de Padua | city | San Martin | Peru | -8.57 | -76.54 | 2591 | 959 |
| San Antonio de Paujilsapa | city | San Martin | Peru | -6.77 | -76.43 | 1669 | 1546 |
| San Antonio de Paujilzapa | city | San Martin | Peru | -6.77 | -76.43 | 1669 | 1546 |
| San Carlos | city | San Martin | Peru | -5.87 | -77.43 | 5059 | 4567 |
| San Carlos | city | San Martin | Peru | -7.04 | -76.49 | 971 | 4411 |
| San Carlos | city | San Martin | Peru | -6.63 | -76.42 | 964 | 1994 |
| San Carlos | city | San Martin | Peru | -6.62 | -76.29 | 912 | 3210 |
| San Carlos | city | San Martin | Peru | -8.43 | -76.40 | 1873 | 6468 |
| San Cosme | city | San Martin | Peru | -6.80 | -76.56 | 1669 | 3331 |
| San Cristobal | city | San Martin | Peru | -6.18 | -76.23 | 984 | 2907 |
| San Cristobal de Sisa | city | San Martin | Peru | -7.00 | -76.44 | 938 | 4089 |
| San Fernando | city | San Martin | Peru | -6.60 | -76.45 | 980 | 3946 |
| San Fernano | city | San Martin | Peru | -5.90 | -77.27 | 2598 | 7662 |
| San Francisco | city | San Martin | Peru | -6.57 | -76.46 | 984 | 11844 |
| San Francisco | city | San Martin | Peru | -6.95 | -76.39 | 935 | 4473 |
| San Francisco | city | San Martin | Peru | -6.57 | -76.42 | 977 | 36973 |
| San Francisco | city | San Martin | Peru | -5.78 | -77.32 | 2624 | 1822 |
| San Francisco | city | San Martin | Peru | -8.51 | -76.45 | 2509 | 2611 |
| San Francisco | city | San Martin | Peru | -6.55 | -76.71 | 2509 | 4234 |
| San Hilarión | city | San Martin | Peru | -7.01 | -76.46 | 948 | 4174 |
| San Isidro | city | San Martin | Peru | -6.90 | -76.57 | 1194 | 4592 |
| San Isidro | city | San Martin | Peru | -6.60 | -76.69 | 1994 | 7147 |
| San Isidro | city | San Martin | Peru | -6.70 | -76.72 | 1669 | 3161 |
| San Isidro | city | San Martin | Peru | -6.95 | -76.35 | 1066 | 7090 |
| San Jorge | city | San Martin | Peru | -6.75 | -76.68 | 1669 | 1813 |
| San Jose | city | San Martin | Peru | -6.62 | -76.33 | 830 | 3934 |
| San Jose | city | San Martin | Peru | -5.97 | -77.29 | 3349 | 7878 |
| San Jose de Potrero | city | San Martin | Peru | -6.15 | -77.02 | 3415 | 8525 |
| San Jose de Sisa | city | San Martin | Peru | -6.61 | -76.69 | 1811 | 7843 |
| San José | city | San Martin | Peru | -6.97 | -76.26 | 967 | 1881 |
| San José | city | San Martin | Peru | -6.80 | -76.52 | 2037 | 3273 |
| San José | city | San Martin | Peru | -6.82 | -76.56 | 1669 | 3644 |
| San José | city | San Martin | Peru | -5.69 | -77.37 | 2795 | 52448 |
| San José | city | San Martin | Peru | -6.10 | -77.06 | 3349 | 5743 |
| San José de Juñao | city | San Martin | Peru | -7.21 | -76.72 | 997 | 5239 |
| San Juan | city | San Martin | Peru | -6.61 | -76.29 | 849 | 3641 |
| San Juan | city | San Martin | Peru | -6.66 | -76.44 | 1122 | 2058 |
| San Juan | city | San Martin | Peru | -6.53 | -76.37 | 1062 | 67040 |
| San Juan | city | San Martin | Peru | -7.05 | -76.44 | 964 | 2329 |
| San Juan | city | San Martin | Peru | -6.59 | -76.34 | 875 | 35355 |
| San Juan | city | San Martin | Peru | -7.16 | -76.38 | 1669 | 567 |
| San Juan | city | San Martin | Peru | -5.86 | -77.34 | 3349 | 7925 |
| San Juan | city | San Martin | Peru | -6.72 | -76.69 | 1669 | 2552 |
| San Juan | city | San Martin | Peru | -7.19 | -76.50 | 1164 | 545 |
| San Juan de Miraflores | city | San Martin | Peru | -6.64 | -76.71 | 1669 | 6912 |
| San Juan de Salado | city | San Martin | Peru | -6.56 | -76.71 | 2007 | 4737 |
| San Juan de Tocache | city | San Martin | Peru | -8.19 | -76.51 | 1669 | 4366 |
| San Julian | city | San Martin | Peru | -6.87 | -76.30 | 954 | 4176 |
| San Julián | city | San Martin | Peru | -7.68 | -76.77 | 1243 | 595 |
| San Juán de Tangomi | city | San Martin | Peru | -6.04 | -77.13 | 2627 | 8722 |
| San Lorenzo | city | San Martin | Peru | -6.58 | -76.43 | 974 | 12759 |
| San Lorenzo | city | San Martin | Peru | -6.19 | -77.10 | 2841 | 4855 |
| San Luis | city | San Martin | Peru | -6.64 | -76.70 | 1669 | 6993 |
| San Luis | city | San Martin | Peru | -6.52 | -76.56 | 1669 | 3582 |
| San Luis | city | San Martin | Peru | -6.99 | -76.44 | 931 | 4089 |
| San Luis | city | San Martin | Peru | -12.07 | -77.00 | 830 | 1665062 |
| San Marcos | city | San Martin | Peru | -6.94 | -76.41 | 1020 | 4154 |
| San Marcos | city | San Martin | Peru | -7.08 | -76.74 | 1171 | 6107 |
| San Marcos | city | San Martin | Peru | -6.22 | -77.12 | 2568 | 4099 |
| San Martin | city | San Martin | Peru | -6.49 | -76.36 | 1669 | 46634 |
| San Martín | city | San Martin | Peru | -6.58 | -76.28 | 839 | 3860 |
| San Martín | city | San Martin | Peru | -7.12 | -76.69 | 1013 | 7004 |
| San Martín | city | San Martin | Peru | -6.51 | -76.74 | 2509 | 2973 |
| San Martín de Cumbaza | city | San Martin | Peru | -6.55 | -76.35 | 921 | 55743 |
| San Miguel | city | San Martin | Peru | -7.01 | -76.68 | 1112 | 2160 |
| San Miguel | city | San Martin | Peru | -6.38 | -76.67 | 1902 | 11516 |
| San Miguel | city | San Martin | Peru | -5.85 | -77.38 | 4189 | 6962 |
| San Miguel | city | San Martin | Peru | -8.57 | -76.43 | 3349 | 899 |
| San Miguel | city | San Martin | Peru | -6.21 | -77.06 | 4189 | 5939 |
| San Nicolás | city | San Martin | Peru | -6.55 | -76.68 | 2644 | 4496 |
| San Pablo | city | San Martin | Peru | -6.75 | -76.67 | 1669 | 1685 |
| San Pablo | city | San Martin | Peru | -6.81 | -76.57 | 1669 | 3256 |
| San Pedro | city | San Martin | Peru | -6.87 | -76.29 | 931 | 3392 |
| San Pedro | city | San Martin | Peru | -7.38 | -76.42 | 1669 | 149 |
| San Pedro | city | San Martin | Peru | -6.99 | -76.69 | 1158 | 1521 |
| San Pedro | city | San Martin | Peru | -6.67 | -76.68 | 1669 | 5297 |
| San Rafael | city | San Martin | Peru | -7.03 | -76.47 | 941 | 3920 |
| San Rafael | city | San Martin | Peru | -6.85 | -76.56 | 1154 | 3838 |
| San Rafael | city | San Martin | Peru | -5.85 | -77.09 | 2509 | 2235 |
| San Regis | city | San Martin | Peru | -6.86 | -76.81 | 1669 | 2553 |
| San Roque de Maria | city | San Martin | Peru | -6.54 | -76.52 | 964 | 5354 |
| San Vincente | city | San Martin | Peru | -6.92 | -76.35 | 908 | 6768 |
| Sanchima | city | San Martin | Peru | -7.18 | -76.97 | 1669 | 149 |
| Sangapilla | city | San Martin | Peru | -7.10 | -76.63 | 984 | 4834 |
| Santa Barbara | city | San Martin | Peru | -7.11 | -76.66 | 984 | 4974 |
| Santa Bárbara | city | San Martin | Peru | -7.18 | -76.97 | 1669 | 149 |
| Santa Catalina | city | San Martin | Peru | -6.93 | -76.36 | 912 | 6603 |
| Santa Catalina | city | San Martin | Peru | -5.99 | -76.97 | 2509 | 1820 |
| Santa Clara | city | San Martin | Peru | -5.89 | -77.29 | 2673 | 8364 |
| Santa Clara | city | San Martin | Peru | -6.94 | -76.26 | 987 | 1816 |
| Santa Cruz | city | San Martin | Peru | -6.91 | -76.26 | 1059 | 2367 |
| Santa Cruz | city | San Martin | Peru | -6.61 | -76.72 | 1669 | 7447 |
| Santa Cruz | city | San Martin | Peru | -6.57 | -76.56 | 1669 | 2462 |
| Santa Cruz | city | San Martin | Peru | -7.20 | -76.74 | 1000 | 7339 |
| Santa Cruz de Shanao | city | San Martin | Peru | -6.35 | -76.67 | 1781 | 12122 |
| Santa Cruz de los Motilones de Tarapoto | city | San Martin | Peru | -6.49 | -76.36 | 1669 | 46634 |
| Santa Elena | city | San Martin | Peru | -5.99 | -77.19 | 2509 | 20344 |
| Santa Elena | city | San Martin | Peru | -6.52 | -76.69 | 2680 | 3958 |
| Santa Elena | city | San Martin | Peru | -6.22 | -75.75 | 830 | 2248 |
| Santa Elena | city | San Martin | Peru | -6.85 | -76.32 | 875 | 4105 |
| Santa Elena | city | San Martin | Peru | -8.44 | -76.42 | 1916 | 5953 |
| Santa Elena | city | San Martin | Peru | -6.61 | -76.73 | 1669 | 7372 |
| Santa Elena | city | San Martin | Peru | -7.21 | -76.50 | 1167 | 490 |
| Santa Eulalia | city | San Martin | Peru | -6.93 | -76.37 | 918 | 6173 |
| Santa Isabel | city | San Martin | Peru | -6.51 | -76.46 | 938 | 22429 |
| Santa Isabel | city | San Martin | Peru | -8.46 | -76.44 | 1935 | 4195 |
| Santa Isabel | city | San Martin | Peru | -7.08 | -76.66 | 1026 | 4569 |
| Santa Isabel | city | San Martin | Peru | -6.60 | -76.50 | 1669 | 3138 |
| Santa Lucia | city | San Martin | Peru | -6.78 | -76.58 | 1669 | 2834 |
| Santa Lucia | city | San Martin | Peru | -6.33 | -75.70 | 830 | 760 |
| Santa Lucia | city | San Martin | Peru | -8.35 | -76.39 | 1669 | 5377 |
| Santa Luisa | city | San Martin | Peru | -6.56 | -76.33 | 941 | 43447 |
| Santa Maria | city | San Martin | Peru | -6.67 | -76.62 | 2509 | 2758 |
| Santa Maria | city | San Martin | Peru | -6.59 | -76.28 | 830 | 3675 |
| Santa Marta | city | San Martin | Peru | -6.95 | -76.33 | 984 | 6962 |
| Santa Marta | city | San Martin | Peru | -6.67 | -76.62 | 2509 | 2758 |
| Santa Rita | city | San Martin | Peru | -6.54 | -76.69 | 2614 | 4310 |
| Santa Rosa | city | San Martin | Peru | -7.18 | -76.34 | 1669 | 573 |
| Santa Rosa | city | San Martin | Peru | -6.74 | -76.62 | 1669 | 2180 |
| Santa Rosa | city | San Martin | Peru | -6.62 | -76.38 | 928 | 2461 |
| Santa Rosa | city | San Martin | Peru | -6.95 | -76.26 | 987 | 1786 |
| Santa Rosa | city | San Martin | Peru | -6.19 | -77.09 | 3349 | 5420 |
| Santa Rosa | city | San Martin | Peru | -6.73 | -76.42 | 1043 | 1405 |
| Santa Rosa | city | San Martin | Peru | -7.07 | -76.73 | 1141 | 6008 |
| Santa Rosa | city | San Martin | Peru | -5.72 | -77.37 | 2654 | 52208 |
| Santa Rosa | city | San Martin | Peru | -6.09 | -77.24 | 3349 | 13568 |
| Santa Rosa | city | San Martin | Peru | -6.63 | -75.63 | 921 | 745 |
| Santa Rosa | city | San Martin | Peru | -8.24 | -76.40 | 1669 | 4633 |
| Santa Rosa | city | San Martin | Peru | -6.93 | -76.37 | 915 | 6173 |
| Santa Rosa | city | San Martin | Peru | -6.74 | -76.34 | 902 | 1752 |
| Santa Rosa | city | San Martin | Peru | -6.57 | -76.05 | 830 | 1294 |
| Santa Rosa de Cumbaza | city | San Martin | Peru | -6.52 | -76.38 | 997 | 69166 |
| Santa Rosa de Oromina | city | San Martin | Peru | -6.10 | -77.03 | 3349 | 6851 |
| Santa Rosillo | city | San Martin | Peru | -6.61 | -76.68 | 1938 | 8038 |
| Santa Rosillo | city | San Martin | Peru | -6.92 | -76.37 | 931 | 6482 |
| Santa Rosita de Upaquihua | city | San Martin | Peru | -6.73 | -76.42 | 1043 | 1405 |
| Santa Teresa | city | San Martin | Peru | -6.54 | -76.37 | 931 | 66904 |
| Santa Teresa | city | San Martin | Peru | -6.85 | -76.57 | 1154 | 3806 |
| Santa Teresa | city | San Martin | Peru | -7.08 | -76.64 | 994 | 4499 |
| Santa Vita | city | San Martin | Peru | -6.98 | -76.26 | 974 | 1830 |
| Santa Zenobia | city | San Martin | Peru | -6.58 | -76.29 | 843 | 11119 |
| Santafe | city | San Martin | Peru | -6.03 | -77.28 | 3349 | 8362 |
| Santillo | city | San Martin | Peru | -6.20 | -77.16 | 2588 | 5404 |
| Santo Domingo | city | San Martin | Peru | -6.61 | -76.38 | 958 | 5199 |
| Santo Domingo | city | San Martin | Peru | -6.07 | -77.11 | 2677 | 4254 |
| Santo Tomás | city | San Martin | Peru | -6.78 | -76.42 | 1246 | 1563 |
| Saposoa | city | San Martin | Peru | -6.93 | -76.77 | 1181 | 10032 |
| Sapote | city | San Martin | Peru | -5.94 | -77.03 | 2509 | 5331 |
| Sauce | city | San Martin | Peru | -6.69 | -76.21 | 1040 | 6128 |
| Sausi | city | San Martin | Peru | -6.69 | -76.21 | 1040 | 6128 |