| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
2501  | Ingele Ingele,Inyelli,Nyeli | Nigeria, Benue State Okpokwu | populated place | N 7° 4′ 3'' | E 7° 51′ 21'' |
| 2502 | Imule-Amos Imule,Imule Amos,Imule-Amos | Nigeria, Ogun State Egbado North | populated place | N 6° 50′ 29'' | E 2° 47′ 9'' |
| 2503 | Imoto-Odan Imoto,Imoto I,Imoto Odan,Imoto-Odan | Nigeria, Ogun State Egbado North | populated place | N 7° 5′ 31'' | E 2° 52′ 33'' |
| 2504 | Imoto-Igboiyewa Imoto,Imoto II,Imoto Igboiyewa,Imoto-Igboiyewa | Nigeria, Ogun State Egbado North | populated place | N 7° 5′ 36'' | E 2° 53′ 4'' |
| 2505 | Imesi-Ile Imesi Ile,Imesi-Ile,Oke-Mesi-Ipole,Oke-Messi-Ipole | Nigeria, Osun State Obokun | populated place | N 7° 49′ 54'' | E 4° 50′ 34'' |
| 2506 | Imane Imale,Imane,Imani | Nigeria, Kogi State Olamaboro | populated place | N 7° 16′ 26'' | E 7° 42′ 5'' |
| 2507 | Imala-Asipa Ashipa,Imala Asipa,Imala-Asipa | Nigeria, Ogun State Imeko Afon | populated place | N 7° 25′ 14'' | E 3° 0′ 57'' |
| 2508 | Iluaje Aje,Ile-Aje,Iluaje | Nigeria, Oyo State Afijio | populated place | N 7° 45′ 0'' | E 3° 53′ 6'' |
| 2509 | Illushi Illushi | Nigeria, Edo State Esan South-East | populated place population 7,340 | N 6° 40′ 13'' | E 6° 37′ 44'' |
| 2510 | Illah Waterside Allah,Illah Waterside | Nigeria, Delta Oshimili North | populated place | N 6° 27′ 23'' | E 6° 40′ 20'' |
| 2511 | Elikiti Elikiti,Erekiti,Ilikiti | Nigeria, Lagos Badagry | populated place | N 6° 28′ 57'' | E 2° 54′ 43'' |
| 2512 | Ilesha-Ibariba Ilesha,Ilesha Ibariba,Ilesha-Ibariba | Nigeria, Kwara State Baruten | populated place | N 8° 54′ 46'' | E 3° 25′ 17'' |
| 2513 | Ilero Awdan Ilaro,Ilera,Ilero | Nigeria, Ogun State Ipokia | populated place | N 6° 29′ 41'' | E 2° 49′ 23'' |
| 2514 | Ile-Ogo Ile Ogo,Ile-Awgaw,Ile-Ogo | Nigeria, Osun State Ola Oluwa | populated place | N 7° 46′ 37'' | E 4° 12′ 8'' |
| 2515 | Ile-Igboro Ile Igbawraw,Ile Igboro,Ile-Igboro | Nigeria, Ogun State Egbado North | populated place | N 6° 58′ 54'' | E 2° 49′ 37'' |
| 2516 | Ile Ile,Ileh | Nigeria, Edo State Esan West | populated place | N 6° 45′ 32'' | E 6° 12′ 15'' |
| 2517 | Ilawe-Ekiti  Ilae,Ilawe,Ilawe-Ekiti | Nigeria, Ekiti State Ekiti South-West | seat of a second-order administrative division | N 7° 35′ 55'' | E 5° 6′ 16'' |
| 2518 | Ilase Iiashe,Ilase,Ilashe | Nigeria, Ogun State Ipokia | populated place | N 6° 41′ 36'' | E 2° 47′ 24'' |
| 2519 | Ilasa Elachi,Ilasa,Ilashe,Lashe | Nigeria, Lagos Amuwo Odofin | populated place | N 6° 24′ 53'' | E 3° 17′ 2'' |
2520  | Ilaro Forest Reserve | Nigeria, Ogun State | forest reserve | N 6° 46′ 59'' | E 3° 3′ 45'' |
| 2521 | Ilainyo Ilainya,Ilainyo,Ilajyno | Nigeria, Kogi State Dekina | populated place | N 7° 44′ 42'' | E 7° 17′ 19'' |
| 2522 | Ila Forest Reserve | Nigeria, | forest reserve | N 8° 2′ 0'' | E 4° 57′ 0'' |
| 2523 | Ikwe Forest Reserve | Nigeria, Benue State | forest reserve | N 7° 28′ 13'' | E 8° 34′ 39'' |
| 2524 | Ikoyi Ikoyi,Okepa | Nigeria, Lagos Eti Osa | seat of a second-order administrative division | N 6° 27′ 9'' | E 3° 26′ 9'' |
| 2525 | Ikot Offiong Ikot Offiong,Ikot Offiong Ambai,Ikot Offiong Mbia | Nigeria, Cross River State Akpabuyo | populated place | N 4° 55′ 59'' | E 8° 25′ 17'' |
| 2526 | Shelleng Shellem,Shellen,Shelleng | Nigeria, Adamawa Shelleng | seat of a second-order administrative division | N 9° 53′ 47'' | E 12° 0′ 20'' |
| 2527 | Shasha Forest Reserve | Nigeria, Osun State | forest reserve | N 7° 3′ 58'' | E 4° 29′ 3'' |
| 2528 | Sharifuri Sharifuri,Sherfuri,Sherifuri | Nigeria, Bauchi Kirfi > Kwagal | populated place | N 10° 18′ 55'' | E 10° 34′ 22'' |
| 2529 | Shania Shania,Shanla,Twainia | Nigeria, Niger State Agaie | populated place | N 8° 54′ 36'' | E 6° 21′ 15'' |
| 2530 | Shaffa Shaffa | Nigeria, Borno State Hawul > Shaffa | populated place population 6,508 | N 10° 30′ 24'' | E 12° 19′ 59'' |
| 2531 | Kurutie Kurutie,Serorun,Setorum,Setorun | Nigeria, Delta | populated place | N 5° 34′ 52'' | E 5° 20′ 43'' |
| 2532 | Serti Forest Reserve Serti Forest Reserve | Nigeria, Taraba State | forest reserve | N 7° 25′ 0'' | E 11° 23′ 0'' |
| 2533 | Serebia Serebia,Seregbia,Sereobia | Nigeria, Rivers State Abua/Odual | populated place | N 4° 50′ 29'' | E 6° 42′ 13'' |
2534  | Sarkin Dutsi Hill Sar Kin Dutsi,Sarkin Dutsi Hill,Shira Hill | Nigeria, Bauchi Shira > Shira | hill elevation 632m | N 11° 27′ 10'' | E 10° 4′ 4'' |
| 2535 | Murum Salla Murum Salla,Sarkin Baka,Sarkin Bakar | Nigeria, Taraba State Karim Lamido | populated place | N 9° 17′ 33'' | E 11° 5′ 32'' |
| 2536 | Sanngo-Ota Sango-Otta,Sanngo-Ota | Nigeria, Ogun State Ado Odo/Ota | populated place | N 6° 42′ 19'' | E 3° 14′ 23'' |
| 2537 | Sango Hill Pandaw,Pando Hill,Sango Hill | Nigeria, Oyo State Iwajowa | hill | N 8° 2′ 13'' | E 3° 3′ 27'' |
| 2538 | Sangere Sani Sangare Sani,Sangere Sani,Wuro Mallam Sani | Nigeria, Adamawa Demsa | populated place | N 9° 19′ 12'' | E 12° 5′ 50'' |
| 2539 | Sangeko Sangeko,Sangeku,Sengiakun | Nigeria, Zamfara State Maru > Kuyanbana | populated place | N 11° 5′ 50'' | E 6° 3′ 7'' |
| 2540 | Sanga River Forest Reserve | Nigeria, Kaduna State | forest reserve | N 9° 19′ 27'' | E 8° 23′ 2'' |
| 2541 | Sangama Sangama,Sangana,Sengana | Nigeria, Bayelsa State Brass | populated place | N 4° 20′ 4'' | E 5° 59′ 7'' |
| 2542 | Sandamu Forest Reserve | Nigeria, Katsina State | forest reserve | N 12° 58′ 40'' | E 8° 22′ 2'' |
| 2543 | Samma Hills Samma Hill,Samma Hills | Nigeria, Sokoto Tambuwal > Dogon Daji | hill | N 12° 26′ 13'' | E 4° 49′ 6'' |
| 2544 | Samia Samia,Tsamia,Tsamiya | Nigeria, Plateau State Shendam | populated place | N 8° 55′ 13'' | E 9° 46′ 21'' |
| 2545 | Awulli Awulli,Sambori,Samburi | Nigeria, Borno State Ngala > Ndufu | populated place | N 12° 15′ 28'' | E 14° 14′ 29'' |
| 2546 | Hosere Sambo Hosere Sambo,Hosere Sambo Hill | Nigeria, Taraba State Gashaka | peak | N 7° 7′ 5'' | E 11° 27′ 24'' |
| 2547 | Sambisa Forest Reserve | Nigeria, Borno State | forest reserve | N 11° 13′ 33'' | E 13° 24′ 55'' |
| 2548 | Samanaji Samanage,Samanaji,Samaneggi | Nigeria, Kebbi Koko-Besse > Dutsin Mari Dul Meru | populated place | N 11° 9′ 39'' | E 4° 27′ 52'' |
| 2549 | Sama Noguakiri Sama,Sama Noguakiri,Sama-Naguakiri | Nigeria, Rivers State Asari-Toru | populated place | N 4° 48′ 53'' | E 6° 49′ 33'' |
| 2550 | Salawa Salawa,Salawa Odo,Salawa-Odo | Nigeria, Ondo State Irele | populated place | N 6° 24′ 43'' | E 4° 59′ 0'' |
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