| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Sakane | city | Prefecture du Guera | Chad | 11.1666667 | 18.1333333 | 1466 | 607 |
| Sambolo | city | Prefecture du Guera | Chad | 11.15 | 18.2333333 | 1502 | 607 |
| Saoua | city | Prefecture du Guera | Chad | 12.0833333 | 18.8 | 1532 | 607 |
| Saougna | city | Prefecture du Guera | Chad | 12.8166667 | 20.1666667 | 1345 | 691 |
| Saounya | city | Prefecture du Guera | Chad | 12.8166667 | 20.1666667 | 1345 | 691 |
| Saour Galbak | city | Prefecture du Guera | Chad | 12.4166667 | 18.95 | 1249 | 607 |
| Sara | city | Prefecture du Guera | Chad | 12.1 | 18.1 | 1578 | 607 |
| Sara Arab | city | Prefecture du Guera | Chad | 12.1 | 18.1 | 1578 | 607 |
| Sara Kinga | city | Prefecture du Guera | Chad | 12.0833333 | 18.1 | 1532 | 607 |
| Saraf | city | Prefecture du Guera | Chad | 12.55 | 19.7 | 1469 | 607 |
| Saraf Abouzba | city | Prefecture du Guera | Chad | 12.3833333 | 19.55 | 1653 | 607 |
| Saraf Allai | city | Prefecture du Guera | Chad | 12.5333333 | 19.7 | 1450 | 607 |
| Saraf Allaï | city | Prefecture du Guera | Chad | 12.5333333 | 19.7 | 1450 | 607 |
| Saraf Doungous | city | Prefecture du Guera | Chad | 12.55 | 19.7 | 1469 | 607 |
| Sarouf | city | Prefecture du Guera | Chad | 12.55 | 19.7 | 1469 | 607 |
| Sarpaguidad | city | Prefecture du Guera | Chad | 11.9666667 | 18.3666667 | 1528 | 607 |
| Segue | city | Prefecture du Guera | Chad | 10.5 | 18.8333333 | 1299 | 607 |
| Seguefi | city | Prefecture du Guera | Chad | 11.9166667 | 18.2166667 | 1850 | 607 |
| Seguine | city | Prefecture du Guera | Chad | 11.9166667 | 18.2166667 | 1850 | 607 |
| Sehebay | city | Prefecture du Guera | Chad | 12.0833333 | 17.5666667 | 1059 | 1656 |
| Seke | city | Prefecture du Guera | Chad | 10.5 | 18.85 | 1354 | 607 |
| Sese | city | Prefecture du Guera | Chad | 11.3166667 | 17.65 | 1479 | 607 |
| Sesse | city | Prefecture du Guera | Chad | 11.3166667 | 17.65 | 1479 | 607 |
| Sihouri | city | Prefecture du Guera | Chad | 11.7833333 | 18.6 | 1955 | 607 |
| Sila | city | Prefecture du Guera | Chad | 11.3833333 | 18.1 | 1463 | 607 |
| Sim | city | Prefecture du Guera | Chad | 11.3 | 18.05 | 1574 | 607 |
| Simbiro | city | Prefecture du Guera | Chad | 11.9 | 18.5666667 | 1961 | 607 |
| Singe | city | Prefecture du Guera | Chad | 10.6833333 | 18.3833333 | 2030 | 607 |
| Singé | city | Prefecture du Guera | Chad | 10.6833333 | 18.3833333 | 2030 | 607 |
| Sisi | city | Prefecture du Guera | Chad | 10.5333333 | 18.4 | 1473 | 607 |
| Sisi | city | Prefecture du Guera | Chad | 12.1833333 | 18.9 | 1830 | 607 |
| Sisse | city | Prefecture du Guera | Chad | 10.5333333 | 18.4 | 1473 | 607 |
| Sissi | city | Prefecture du Guera | Chad | 10.5333333 | 18.4 | 1473 | 607 |
| Sissé | city | Prefecture du Guera | Chad | 10.5333333 | 18.4 | 1473 | 607 |
| Siwilwil | city | Prefecture du Guera | Chad | 12.2 | 18.4 | 1368 | 607 |
| Sobo | city | Prefecture du Guera | Chad | 10.7166667 | 18.4666667 | 1689 | 607 |
| Sololi | city | Prefecture du Guera | Chad | 11.75 | 18.5333333 | 2404 | 607 |
| Sombolo | city | Prefecture du Guera | Chad | 11.15 | 18.2333333 | 1502 | 607 |
| Sommo | city | Prefecture du Guera | Chad | 11.7666667 | 17.9666667 | 1430 | 607 |
| Somo | city | Prefecture du Guera | Chad | 11.75 | 17.8666667 | 1541 | 607 |
| Somo | city | Prefecture du Guera | Chad | 11.7666667 | 17.9666667 | 1430 | 607 |
| Sono | city | Prefecture du Guera | Chad | 11.7666667 | 17.9666667 | 1430 | 607 |
| Séguine | city | Prefecture du Guera | Chad | 11.9166667 | 18.2166667 | 1850 | 607 |
| Ségué | city | Prefecture du Guera | Chad | 10.5 | 18.8333333 | 1299 | 607 |
| Séguéfi | city | Prefecture du Guera | Chad | 11.9166667 | 18.2166667 | 1850 | 607 |
| Séké | city | Prefecture du Guera | Chad | 10.5 | 18.85 | 1354 | 607 |
| Séssé | city | Prefecture du Guera | Chad | 11.3166667 | 17.65 | 1479 | 607 |
| Sésé | city | Prefecture du Guera | Chad | 11.3166667 | 17.65 | 1479 | 607 |
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