| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
2251  | Silé Sile,Silé | Chad, Guéra | hill elevation 473m | N 11° 13′ 11'' | E 17° 40′ 21'' |
2252  | Sigui Sigui,Tsige | Chad, Mayo-Kebbi Est | populated place | N 10° 3′ 59'' | E 15° 35′ 10'' |
| 2253 | Siguet Siget,Siguet | Chad, Chari-Baguirmi | populated place | N 11° 47′ 5'' | E 15° 13′ 13'' |
| 2254 | Sibékat Kabourchia Sibekat Kabourchia,Sibekat Kabourchiak,Sibékat Kabourchia | Chad, Hadjer-Lamis | blowout(s) | N 12° 31′ 1'' | E 15° 35′ 8'' |
| 2255 | Siaka Siaka | Chad, Guéra | hill | N 10° 56′ 26'' | E 18° 7′ 50'' |
| 2256 | Sherda Cherda,Sherda | Chad, Tibesti | populated place | N 20° 6′ 0'' | E 16° 41′ 0'' |
| 2257 | Séri Seri,Seti,Séri,Séti | Chad, Logone Oriental | populated place | N 8° 24′ 41'' | E 17° 3′ 16'' |
| 2258 | Séra Mera,Méra,Sera,Séra | Chad, Salamat | populated place | N 10° 8′ 13'' | E 19° 40′ 31'' |
| 2259 | Silambim Selambim,Silambim,Sélambim | Chad, Mandoul | populated place | N 8° 25′ 7'' | E 17° 47′ 14'' |
| 2260 | Mont Séguine Mont Seguine,Mont Séguine | Chad, Guéra | mountain | N 11° 55′ 18'' | E 18° 11′ 54'' |
| 2261 | Séguine Seguefi,Seguine,Séguine,Séguéfi | Chad, Guéra | populated place | N 11° 54′ 42'' | E 18° 13′ 19'' |
| 2262 | Chari Chari,Sari | Chad, Batha | populated place | N 12° 32′ 17'' | E 17° 20′ 9'' |
| 2263 | Mont Saré Mont Sare,Mont Saré | Chad, Logone Oriental | mountain elevation 631m | N 8° 6′ 39'' | E 15° 37′ 26'' |
| 2264 | Sananga Sananga,Saranga | Chad, Kanem | populated place | N 13° 43′ 52'' | E 15° 45′ 21'' |
| 2265 | Sara Karèr Sara Karer,Sara Karèr,Sarakarere,Sarakarère | Chad, Logone Oriental | populated place | N 8° 10′ 28'' | E 15° 32′ 33'' |
| 2266 | Sara I Sara I,Sara II | Chad, Logone Oriental | populated place | N 8° 10′ 0'' | E 15° 36′ 18'' |
| 2267 | Saray Sarai,Saray,Saraï | Chad, Batha | populated place | N 13° 55′ 18'' | E 19° 41′ 51'' |
| 2268 | Saraf Saraf,Sarouf | Chad, Guéra | populated place | N 12° 32′ 41'' | E 19° 41′ 39'' |
| 2269 | Sara Arab Sara,Sara Arab | Chad, Guéra | populated place | N 12° 6′ 2'' | E 18° 6′ 8'' |
| 2270 | Sara I Sara,Sara I | Chad, Logone Oriental | populated place | N 8° 9′ 2'' | E 15° 37′ 18'' |
| 2271 | Sahoura Sahoura,Saora | Chad, Mayo-Kebbi Est | populated place | N 9° 49′ 19'' | E 15° 32′ 13'' |
| 2272 | Santénia II Santania II,Santenia II,Santénia II | Chad, Mandoul | populated place | N 8° 10′ 5'' | E 17° 34′ 1'' |
| 2273 | Santénia I Santania I,Santenia I,Santénia I | Chad, Mandoul | populated place | N 8° 10′ 51'' | E 17° 35′ 35'' |
| 2274 | Sangui Sangi,Sangui | Chad, Tandjilé | populated place | N 9° 50′ 12'' | E 16° 29′ 18'' |
| 2275 | Sangoulou Sangoula,Sangoulou | Chad, Mandoul | populated place | N 8° 15′ 30'' | E 17° 42′ 24'' |
| 2276 | Sandéné I Sandene,Sandene I,Sandéné,Sandéné I | Chad, Mandoul | populated place | N 8° 39′ 21'' | E 17° 42′ 38'' |
| 2277 | Satémé Sandene,Sandéné,Sateme,Satémé | Chad, Mandoul | populated place | N 8° 20′ 26'' | E 17° 58′ 0'' |
| 2278 | Sama Sama,Samma | Chad, Logone Oriental | populated place | N 9° 2′ 51'' | E 16° 35′ 19'' |
| 2279 | Samki Samki | Chad, Guéra | mountain elevation 1068m | N 11° 3′ 32'' | E 17° 54′ 20'' |
| 2280 | Sania Samia,Sania | Chad, Tandjilé | populated place | N 9° 10′ 3'' | E 16° 10′ 23'' |
| 2281 | Sanassa Samassa,Sanassa | Chad, Mandoul | populated place | N 8° 9′ 31'' | E 17° 26′ 15'' |
| 2282 | Sam Sam | Chad, Moyen-Chari | hill elevation 625m | N 10° 14′ 56'' | E 18° 9′ 28'' |
| 2283 | Salassef Salasef,Salassef | Chad, Chari-Baguirmi | populated place | N 11° 12′ 0'' | E 15° 54′ 21'' |
| 2284 | Salamata Salamata,Salmala | Chad, Mayo-Kebbi Ouest | populated place | N 8° 44′ 49'' | E 15° 9′ 28'' |
2285  | Bahr Salamat  Bahr Salamat,Bahr Salamati,Bahr Selamat,Guinph,Ko,Kô | Chad, | stream | N 9° 33′ 37'' | E 18° 16′ 47'' |
| 2286 | Mont Sakoro Mont Sakoro | Chad, Guéra | hill elevation 685m | N 11° 51′ 12'' | E 18° 33′ 50'' |
| 2287 | Sanour Sakbour,Sanour | Chad, Batha | populated place | N 13° 8′ 25'' | E 19° 30′ 29'' |
| 2288 | Tchéken Sakane,Tcheken,Tchéken | Chad, Guéra | populated place | N 11° 10′ 9'' | E 18° 8′ 18'' |
| 2289 | Safi Saf,Safi | Chad, Barh el Gazel | dune(s) | N 14° 37′ 18'' | E 17° 5′ 0'' |
| 2290 | Sabarno Sabarna,Sabarno | Chad, Chari-Baguirmi | populated place | N 12° 9′ 18'' | E 15° 24′ 7'' |
| 2291 | Roukoum Rocoum,Roukoum | Chad, Guéra | populated place | N 10° 54′ 0'' | E 18° 6′ 4'' |
| 2292 | Ronyan Ronian,Ronyan | Chad, Hadjer-Lamis | populated place | N 12° 33′ 52'' | E 15° 5′ 39'' |
| 2293 | Ronian Ronian,rwnyan,رونيان | Chad, Chari-Baguirmi | populated place | N 11° 54′ 40'' | E 15° 27′ 51'' |
| 2294 | Rong Rong,Roug | Chad, Mayo-Kebbi Ouest | populated place | N 9° 30′ 41'' | E 14° 58′ 19'' |
| 2295 | Rond Point de Gaulle Rond Point de Gaulle | Chad, Borkou | hill elevation 473m | N 18° 40′ 24'' | E 17° 31′ 45'' |
| 2296 | Romekho Romekho,Romeko | Chad, Batha | populated place | N 13° 11′ 36'' | E 18° 10′ 52'' |
| 2297 | Rizé Rize,Rizze,Rizzé,Rizé | Chad, Hadjer-Lamis | populated place | N 12° 30′ 7'' | E 14° 59′ 10'' |
| 2298 | Ridjiba Ridjiba,Ridjibo | Chad, Lac | island | N 13° 20′ 37'' | E 14° 24′ 3'' |
| 2299 | Ribao Ribao,Ribao Yaou | Chad, Mayo-Kebbi Ouest | populated place | N 9° 47′ 18'' | E 14° 18′ 43'' |
| 2300 | Ghichghich Ghichghich,Rhichrhich | Chad, Salamat | populated place | N 10° 17′ 12'' | E 19° 43′ 46'' |
by