| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| SELIBADY | airport | Mauritania | 15.18 | -12.21 | 262 | 0 | |
| SEY (SELIBADY) | airport | Mauritania | 15.18 | -12.21 | 262 | 0 | |
| Saabia | city | Mauritania | 25.50 | -8.12 | 1669 | 0 | |
| Sabala | city | Brakna | Mauritania | 16.42 | -14.03 | 62 | 790 |
| Sabar | city | Gorgol | Mauritania | 16.13 | -12.88 | 65 | 812 |
| Sabbâr | city | Gorgol | Mauritania | 16.13 | -12.88 | 65 | 812 |
| Saboala | city | Gorgol | Mauritania | 15.21 | -12.84 | 45 | 1860 |
| Saboala | city | Brakna | Mauritania | 16.42 | -14.03 | 62 | 790 |
| Sabou-Ciré | city | Guidimaka | Mauritania | 14.82 | -12.06 | 137 | 596 |
| Sabou-Siré | city | Guidimaka | Mauritania | 14.82 | -12.06 | 137 | 596 |
| Saboussiré | city | Guidimaka | Mauritania | 14.82 | -12.06 | 137 | 596 |
| Saboussiré | city | Guidimaka | Mauritania | 15.35 | -12.55 | 157 | 596 |
| Sagne | city | Guidimaka | Mauritania | 15.20 | -12.79 | 55 | 1121 |
| Sago | city | Brakna | Mauritania | 16.47 | -14.11 | 52 | 1038 |
| Sahout el Ma | city | Mauritania | 16.92 | -15.17 | 72 | 596 | |
| Salka Bale | city | Gorgol | Mauritania | 16.04 | -12.65 | 196 | 688 |
| Salka Dahana | city | Guidimaka | Mauritania | 15.48 | -11.73 | 150 | 945 |
| Samba | city | Guidimaka | Mauritania | 15.92 | -11.65 | 288 | 596 |
| Samba Doga | city | Guidimaka | Mauritania | 15.54 | -12.23 | 255 | 596 |
| Samba Hammadi | city | Brakna | Mauritania | 16.48 | -13.84 | 160 | 489 |
| Samba Kandji | city | Guidimaka | Mauritania | 14.98 | -12.32 | 78 | 596 |
| Samba Ngoma | city | Guidimaka | Mauritania | 15.58 | -11.95 | 314 | 596 |
| Samba Sada | city | Gorgol | Mauritania | 15.87 | -12.84 | 200 | 825 |
| Samba Sako | city | Guidimaka | Mauritania | 15.11 | -12.48 | 85 | 596 |
| Sambadebe | city | Guidimaka | Mauritania | 14.95 | -12.45 | 121 | 14864 |
| Sambakagny | city | Guidimaka | Mauritania | 14.98 | -12.32 | 78 | 596 |
| Sambou | city | Hodh El Gharbi | Mauritania | 15.46 | -10.32 | 830 | 366 |
| Sanba | city | Guidimaka | Mauritania | 15.92 | -11.65 | 288 | 596 |
| Sanba Kandji | city | Guidimaka | Mauritania | 14.98 | -12.32 | 78 | 596 |
| Sanbadébé | city | Guidimaka | Mauritania | 14.95 | -12.45 | 121 | 14864 |
| Sanbangoma | city | Guidimaka | Mauritania | 15.58 | -11.95 | 314 | 596 |
| Sanbou | city | Hodh El Gharbi | Mauritania | 15.46 | -10.32 | 830 | 366 |
| Sandémodé | city | Gorgol | Mauritania | 15.71 | -12.68 | 141 | 596 |
| Sangre Moit | city | Brakna | Mauritania | 16.51 | -13.14 | 249 | 657 |
| Sangue-Dieri | city | Guidimaka | Mauritania | 15.08 | -12.58 | 65 | 1347 |
| Sanguere Mouit | city | Brakna | Mauritania | 16.51 | -13.14 | 249 | 657 |
| Sani | city | Assaba | Mauritania | 16.06 | -11.61 | 830 | 298 |
| Sani | city | Assaba | Mauritania | 16.00 | -11.62 | 390 | 435 |
| Saouggani | city | Hodh El Gharbi | Mauritania | 16.62 | -9.84 | 830 | 149 |
| Saralébéda | city | Assaba | Mauritania | 15.39 | -11.00 | 830 | 298 |
| Sarankoite | city | Guidimaka | Mauritania | 15.17 | -12.31 | 170 | 596 |
| Saré Ndogou Boubakar Baïli | city | Brakna | Mauritania | 16.67 | -14.30 | 65 | 249 |
| Saré Ndogou Dibéri | city | Brakna | Mauritania | 16.65 | -14.32 | 52 | 328 |
| Saye | city | Brakna | Mauritania | 16.63 | -14.27 | 62 | 14759 |
| Saylibābī | city | Guidimaka | Mauritania | 15.16 | -12.18 | 187 | 22852 |
| Saïdine | city | Tagant | Mauritania | 19.18 | -10.66 | 1669 | 0 |
| Sbeibirat | city | Mauritania | 17.05 | -10.05 | 944 | 149 | |
| Sbeikha Ahel Sidi Ould Ahmed | city | Adrar | Mauritania | 19.86 | -12.92 | 849 | 0 |
| Sbeï | city | Assaba | Mauritania | 15.42 | -11.17 | 830 | 310 |
| Sege | city | Hodh ech Chargui | Mauritania | 15.19 | -6.96 | 931 | 298 |
| Segue | city | Hodh ech Chargui | Mauritania | 15.19 | -6.96 | 931 | 298 |
| Segui | city | Mauritania | 16.92 | -10.60 | 849 | 149 | |
| Sehout el Ma | city | Mauritania | 16.92 | -15.17 | 72 | 596 | |
| Sei Deleme | city | Guidimaka | Mauritania | 15.13 | -11.95 | 255 | 596 |
| Sei Hamar | city | Guidimaka | Mauritania | 15.03 | -11.95 | 285 | 596 |
| Seira Fatouma | city | Gorgol | Mauritania | 15.61 | -12.47 | 91 | 596 |
| Seli Atach | city | Guidimaka | Mauritania | 15.70 | -12.25 | 206 | 596 |
| Selibabi | city | Guidimaka | Mauritania | 15.16 | -12.18 | 187 | 22852 |
| Selibaby | city | Guidimaka | Mauritania | 15.16 | -12.18 | 187 | 22852 |
| Sellam | city | Assaba | Mauritania | 15.92 | -11.10 | 830 | 298 |
| Selrazene | city | Gorgol | Mauritania | 15.75 | -12.74 | 196 | 596 |
| Seyene | city | Gorgol | Mauritania | 16.21 | -13.38 | 68 | 1043 |
| Si Hamel | city | Guidimaka | Mauritania | 15.31 | -12.17 | 239 | 596 |
| Sibar | city | Assaba | Mauritania | 15.57 | -10.96 | 830 | 298 |
| Silibabi | city | Guidimaka | Mauritania | 15.16 | -12.18 | 187 | 22852 |
| Siluol | city | Gorgol | Mauritania | 15.95 | -12.80 | 98 | 1000 |
| Siluol | city | Gorgol | Mauritania | 15.95 | -12.84 | 124 | 1043 |
| Simon | city | Mauritania | 16.72 | -14.99 | 42 | 654 | |
| Sintiou Boummaka | city | Gorgol | Mauritania | 16.12 | -13.62 | 32 | 1610 |
| Sivé | city | Gorgol | Mauritania | 15.70 | -13.21 | 42 | 3921 |
| Slailihi | city | Hodh ech Chargui | Mauritania | 15.98 | -7.44 | 830 | 298 |
| Slaylihi | city | Hodh ech Chargui | Mauritania | 15.98 | -7.44 | 830 | 298 |
| Solou | city | Guidimaka | Mauritania | 14.77 | -12.16 | 59 | 1191 |
| Sori Male | city | Brakna | Mauritania | 16.19 | -13.90 | 45 | 2001 |
| Soronabougou | city | Hodh El Gharbi | Mauritania | 15.52 | -10.26 | 830 | 298 |
| Sorototo | city | Assaba | Mauritania | 15.24 | -10.89 | 830 | 334 |
| Sott | city | Hodh El Gharbi | Mauritania | 15.57 | -9.96 | 830 | 299 |
| Souaende | city | Hodh ech Chargui | Mauritania | 15.59 | -8.95 | 830 | 497 |
| Souei Teicheu | city | Hodh ech Chargui | Mauritania | 15.66 | -7.35 | 853 | 298 |
| Soueil Delil | city | Hodh ech Chargui | Mauritania | 16.71 | -6.18 | 1069 | 149 |
| Souet el Ma | city | Mauritania | 16.92 | -15.17 | 72 | 596 | |
| Soueïf | city | Gorgol | Mauritania | 15.99 | -12.47 | 147 | 596 |
| Soueïhat | city | Mauritania | 21.80 | -12.60 | 882 | 0 | |
| Soufi | city | Guidimaka | Mauritania | 15.17 | -12.01 | 265 | 596 |
| Sountchoudebe | city | Guidimaka | Mauritania | 14.99 | -12.46 | 203 | 1450 |
| Srouziat | city | Hodh El Gharbi | Mauritania | 16.93 | -9.49 | 830 | 149 |
| Srouziyat | city | Hodh El Gharbi | Mauritania | 16.93 | -9.49 | 830 | 149 |
| Swaendé | city | Hodh ech Chargui | Mauritania | 15.59 | -8.95 | 830 | 497 |
| Sweihat | city | Mauritania | 21.80 | -12.60 | 882 | 0 | |
| Swey Teycheu | city | Hodh ech Chargui | Mauritania | 15.66 | -7.35 | 853 | 298 |
| Sâïlé | city | Hodh ech Chargui | Mauritania | 16.48 | -7.09 | 935 | 149 |
| Séné Kouna | city | Brakna | Mauritania | 16.49 | -14.10 | 65 | 714 |
| Sétaré | city | Hodh ech Chargui | Mauritania | 15.60 | -7.80 | 938 | 298 |
| Séyyène | city | Gorgol | Mauritania | 16.21 | -13.38 | 68 | 1043 |