| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Siankolé | city | Tillaberi | Niger | 12.87 | 1.88 | 830 | 2180 |
| Siankoré Bambara | city | Tillaberi | Niger | 12.87 | 1.88 | 830 | 2180 |
| Sidi Kouara | city | Tillaberi | Niger | 13.02 | 2.30 | 830 | 1460 |
| Sidi Kwara | city | Tillaberi | Niger | 13.02 | 2.30 | 830 | 1460 |
| Sigaradou | city | Tillaberi | Niger | 13.92 | 3.18 | 830 | 3530 |
| Sikiey | city | Tillaberi | Niger | 13.64 | 1.83 | 830 | 4508 |
| Sikye | city | Tillaberi | Niger | 13.64 | 1.83 | 830 | 4508 |
| Silenké Bangou | city | Tillaberi | Niger | 13.20 | 1.65 | 830 | 1788 |
| Sill Boli | city | Tillaberi | Niger | 13.83 | 1.61 | 830 | 6358 |
| Simeri | city | Tillaberi | Niger | 14.14 | 2.13 | 892 | 3874 |
| Siminti | city | Tillaberi | Niger | 13.86 | 1.93 | 830 | 4315 |
| Siminti Kaina | city | Tillaberi | Niger | 13.86 | 1.94 | 830 | 4371 |
| Simiri | city | Tillaberi | Niger | 14.14 | 2.13 | 892 | 3874 |
| Simiti Keyna | city | Tillaberi | Niger | 13.86 | 1.94 | 830 | 4371 |
| Simiti-Kaina | city | Tillaberi | Niger | 13.86 | 1.94 | 830 | 4371 |
| Sina Kouara | city | Tillaberi | Niger | 13.28 | 2.68 | 830 | 3844 |
| Sindamoa | city | Tillaberi | Niger | 12.74 | 1.95 | 830 | 1974 |
| Sinderme | city | Tillaberi | Niger | 14.23 | 1.34 | 830 | 7395 |
| Sindou Moa | city | Tillaberi | Niger | 12.74 | 1.95 | 830 | 1974 |
| Sindèr | city | Tillaberi | Niger | 14.24 | 1.33 | 830 | 7079 |
| Sine Kwara | city | Tillaberi | Niger | 13.28 | 2.68 | 830 | 3844 |
| Singill | city | Tillaberi | Niger | 14.71 | 2.18 | 830 | 1341 |
| Singka Koira | city | Tillaberi | Niger | 14.97 | 1.93 | 935 | 1341 |
| Sini Bangou | city | Tillaberi | Niger | 14.04 | 2.00 | 830 | 3874 |
| Sini Bangou | city | Tillaberi | Niger | 13.92 | 1.96 | 830 | 3925 |
| Sinia | city | Tillaberi | Niger | 13.22 | 1.91 | 830 | 1403 |
| Sinibangou | city | Tillaberi | Niger | 14.02 | 1.99 | 830 | 3874 |
| Sinisika | city | Tillaberi | Niger | 13.90 | 0.89 | 830 | 954 |
| Sinka | city | Tillaberi | Niger | 13.83 | 1.65 | 830 | 5386 |
| Sinnsan Kaoura | city | Tillaberi | Niger | 13.91 | 2.26 | 830 | 3801 |
| Sinnsan Samari | city | Tillaberi | Niger | 13.91 | 2.29 | 830 | 3849 |
| Sinogoro | city | Tillaberi | Niger | 13.74 | 1.43 | 830 | 6854 |
| Sinsan | city | Tillaberi | Niger | 14.37 | 2.00 | 830 | 1626 |
| Sinsan Kouara | city | Tillaberi | Niger | 13.91 | 2.26 | 830 | 3801 |
| Sinsan Samari | city | Tillaberi | Niger | 13.91 | 2.29 | 830 | 3849 |
| Sinsan Tondi Kouara Tégui | city | Tillaberi | Niger | 13.92 | 2.16 | 859 | 3874 |
| Sinsan Tondi Koura Zéno | city | Tillaberi | Niger | 13.91 | 2.20 | 830 | 3874 |
| Siné-Koara | city | Tillaberi | Niger | 13.28 | 2.68 | 830 | 3844 |
| Siram | city | Tillaberi | Niger | 14.40 | 1.00 | 830 | 3725 |
| Sirgourou | city | Tillaberi | Niger | 13.37 | 2.68 | 830 | 3328 |
| Sirimbana | city | Tillaberi | Niger | 13.10 | 1.80 | 830 | 1788 |
| Siriniere Zarma | city | Tillaberi | Niger | 13.34 | 2.31 | 830 | 10761 |
| Siriniéré | city | Tillaberi | Niger | 13.34 | 2.31 | 830 | 10761 |
| Sisan | city | Tillaberi | Niger | 12.84 | 2.24 | 830 | 1788 |
| Sisan Tondi | city | Tillaberi | Niger | 14.06 | 2.06 | 859 | 3874 |
| Sisintondi | city | Tillaberi | Niger | 13.92 | 2.16 | 859 | 3874 |
| Sissan | city | Tillaberi | Niger | 12.84 | 2.24 | 830 | 1788 |
| Sissan Tondi | city | Tillaberi | Niger | 14.06 | 2.06 | 859 | 3874 |
| Siwili | city | Tillaberi | Niger | 14.99 | 1.72 | 1003 | 1341 |