| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Se I | city | Prefecture du Logone Oriental | Chad | 8.05 | 15.7166667 | 1620 | 2772 |
| Se II | city | Prefecture du Logone Oriental | Chad | 8.0666667 | 15.7666667 | 1525 | 2772 |
| Seaba | city | Prefecture du Chari-Baguirmi | Chad | 10.5666667 | 17.1666667 | 1049 | 2170 |
| Sebe | city | Prefecture du Moyen-Chari | Chad | 8.9 | 17.75 | 1364 | 2329 |
| Sebe | city | Prefecture du Moyen-Chari | Chad | 8.5833333 | 18.1 | 1204 | 2329 |
| Sedigi | city | Prefecture du Kanem | Chad | 14.35 | 14.2833333 | 987 | 355 |
| Seezaraf | city | Prefecture du Chari-Baguirmi | Chad | 12.5833333 | 16.75 | 977 | 2156 |
| Sefeie | city | Prefecture du Biltine | Chad | 14.3666667 | 20.8666667 | 1669 | 593 |
| Segeri | city | Prefecture du Lac | Chad | 13.6833333 | 15.4833333 | 997 | 413 |
| Segetougo | city | Prefecture du Biltine | Chad | 15.1166667 | 21.5666667 | 2099 | 551 |
| Segourbe Djoudjou | city | Prefecture du Biltine | Chad | 15.2833333 | 22 | 3517 | 546 |
| Segre | city | Prefecture du Biltine | Chad | 14.8 | 21.6166667 | 2598 | 551 |
| 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 |
| Seheba | city | Prefecture du Batha | Chad | 13.2833333 | 19.3 | 1151 | 691 |
| Seheba | city | Prefecture du Ouaddai | Chad | 12.7 | 20.1333333 | 1400 | 691 |
| Sehebay | city | Prefecture du Chari-Baguirmi | Chad | 12.1166667 | 14.95 | 912 | 4271 |
| Sehebay | city | Prefecture du Guera | Chad | 12.0833333 | 17.5666667 | 1059 | 1656 |
| Sehebaya | city | Prefecture du Chari-Baguirmi | Chad | 12.6333333 | 17.0166667 | 915 | 2156 |
| Sehep | city | Prefecture du Salamat | Chad | 11.2333333 | 20.5833333 | 1400 | 355 |
| Seidjanjaiti | city | Prefecture du Chari-Baguirmi | Chad | 12.85 | 16.5333333 | 1023 | 2156 |
| Seidjanjaïti | city | Prefecture du Chari-Baguirmi | Chad | 12.85 | 16.5333333 | 1023 | 2156 |
| Seifou | city | Prefecture du Salamat | Chad | 11.25 | 21.6666667 | 1515 | 355 |
| Seifu | city | Prefecture du Salamat | Chad | 11.25 | 21.6666667 | 1515 | 355 |
| Seita | city | Prefecture du Chari-Baguirmi | Chad | 11.3166667 | 16.5166667 | 1013 | 2161 |
| Seita Dankoutch | city | Prefecture du Batha | Chad | 12.9666667 | 17.8833333 | 944 | 700 |
| Seita Danranga | city | Prefecture du Batha | Chad | 12.9 | 17.8666667 | 951 | 700 |
| Seita Tarsourou | city | Prefecture du Batha | Chad | 12.9333333 | 17.85 | 925 | 700 |
| Seite | city | Prefecture du Chari-Baguirmi | Chad | 11.3166667 | 16.5166667 | 1013 | 2161 |
| Seitla | city | Prefecture du Chari-Baguirmi | Chad | 11.3166667 | 16.5166667 | 1013 | 2161 |
| Seke | city | Prefecture du Guera | Chad | 10.5 | 18.85 | 1354 | 607 |
| Sekiri | city | Prefecture du Chari-Baguirmi | Chad | 12.9825 | 15.6825 | 908 | 2150 |
| Seko | city | Prefecture du Ouaddai | Chad | 12.8333333 | 20.2666667 | 1410 | 795 |
| Sekoua | city | Prefecture du Mayo-Kebbi | Chad | 10.7833333 | 15.8 | 1036 | 5607 |
| Selambim | city | Prefecture du Moyen-Chari | Chad | 8.4166667 | 17.7833333 | 1167 | 2329 |
| Selbe | city | Prefecture du Mayo-Kebbi | Chad | 10.7333333 | 15.4166667 | 958 | 6468 |
| Selbe | city | Prefecture du Mayo-Kebbi | Chad | 10.7666667 | 15.4333333 | 964 | 6468 |
| Selbé | city | Prefecture du Mayo-Kebbi | Chad | 10.7333333 | 15.4166667 | 958 | 6468 |
| Selbé | city | Prefecture du Mayo-Kebbi | Chad | 10.7666667 | 15.4333333 | 964 | 6468 |
| Selenyou | city | Prefecture du Ouaddai | Chad | 13.3833333 | 22.25 | 2595 | 3178 |
| Seley | city | Prefecture du Borkou-Ennedi-Tibesti | Chad | 21.3333333 | 17.05 | 3333 | 28 |
| Selibe | city | Prefecture du Biltine | Chad | 15.0833333 | 21.5 | 2076 | 551 |
| Semaindi | city | Prefecture du Tandjile | Chad | 9.3333333 | 16.7666667 | 1266 | 3855 |
| Semaïndi | city | Prefecture du Tandjile | Chad | 9.3333333 | 16.7666667 | 1266 | 3855 |
| Semegin | city | Prefecture du Tandjile | Chad | 10.0166667 | 16.3333333 | 1102 | 3915 |
| Semeguine | city | Prefecture du Tandjile | Chad | 10.0166667 | 16.3333333 | 1102 | 3915 |
| Semeskoul | city | Prefecture du Biltine | Chad | 14.05 | 22.0833333 | 3126 | 551 |
| Sendi | city | Prefecture du Biltine | Chad | 14.6833333 | 22.5333333 | 3015 | 797 |
| Seneboya | city | Prefecture du Chari-Baguirmi | Chad | 12.5125 | 15.9191667 | 954 | 2156 |
| Senere | city | Prefecture du Biltine | Chad | 14.5 | 21.9666667 | 3090 | 551 |
| Senet | city | Prefecture du Lac | Chad | 13.7333333 | 15.6 | 997 | 358 |
| Seneta | city | Prefecture du Chari-Baguirmi | Chad | 12.2908333 | 15.9113889 | 964 | 2156 |
| Senete | city | Prefecture du Chari-Baguirmi | Chad | 12.5525 | 15.5266667 | 961 | 2156 |
| Sera | city | Prefecture du Salamat | Chad | 10.1333333 | 19.6833333 | 1220 | 756 |
| Seraf | city | Prefecture du Salamat | Chad | 11.5 | 19.2666667 | 1610 | 355 |
| Serane | city | Prefecture du Moyen-Chari | Chad | 9.5666667 | 17.3166667 | 1377 | 2599 |
| Serdaba | city | Prefecture du Biltine | Chad | 15.7333333 | 22.6 | 2906 | 546 |
| Serdege | city | Prefecture du Borkou-Ennedi-Tibesti | Chad | 21.3333333 | 17.0166667 | 3297 | 28 |
| Serdelouk | city | Prefecture du Ouaddai | Chad | 12.95 | 21.5166667 | 1929 | 812 |
| Serdégé | city | Prefecture du Borkou-Ennedi-Tibesti | Chad | 21.3333333 | 17.0166667 | 3297 | 28 |
| Sere | city | Prefecture du Mayo-Kebbi | Chad | 9.9166667 | 15.0166667 | 994 | 6845 |
| Sere Am Barkout | city | Prefecture du Chari-Baguirmi | Chad | 12.5466667 | 15.2302778 | 944 | 2156 |
| Serem Kali | city | Prefecture du Tandjile | Chad | 9.05 | 15.7833333 | 1420 | 4963 |
| Serem Ogodo | city | Prefecture du Tandjile | Chad | 9.0666667 | 15.8 | 1420 | 4950 |
| Serem Ogodo | city | Prefecture du Tandjile | Chad | 9.0666667 | 15.8166667 | 1420 | 4950 |
| Serere | city | Prefecture du Chari-Baguirmi | Chad | 13.05 | 15.2833333 | 928 | 1680 |
| Serifinga | city | Prefecture du Kanem | Chad | 13.8166667 | 15.4 | 1010 | 355 |
| Serir | city | Prefecture du Salamat | Chad | 11.4333333 | 20.0166667 | 1335 | 355 |
| Serkoya | city | Prefecture du Chari-Baguirmi | Chad | 12.5119444 | 15.0863889 | 941 | 2156 |
| Sesabane | city | Prefecture du Ouaddai | Chad | 11.7833333 | 21.3333333 | 1594 | 812 |
| Sese | city | Prefecture du Guera | Chad | 11.3166667 | 17.65 | 1479 | 607 |
| Sesse | city | Prefecture du Guera | Chad | 11.3166667 | 17.65 | 1479 | 607 |
| Setan | city | Prefecture du Chari-Baguirmi | Chad | 11.7666667 | 17.1166667 | 987 | 2161 |
| Seti | city | Prefecture du Logone Oriental | Chad | 8.4 | 17.05 | 1318 | 2772 |
| Seyrom | city | Prefecture du Lac | Chad | 13.4333333 | 14.7 | 908 | 1030 |
| Seïta | city | Prefecture du Chari-Baguirmi | Chad | 11.3166667 | 16.5166667 | 1013 | 2161 |