| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
1401  | Illela Native Area Forest Reserve Illela Native Area Forest Reserve,Illela Sokoto Native Area Number 10 | Nigeria, | forest reserve | N 12° 36′ 0'' | E 6° 24′ 0'' |
1402  | Illah  Allah,Illah,an la,ira,イラ,安拉 | Nigeria, Delta Oshimili North | populated place | N 6° 25′ 22'' | E 6° 38′ 56'' |
| 1403 | Ilishan Ilishan,Ilishan Remo,itishan-Remo | Nigeria, Ogun State Ikenne | populated place | N 6° 53′ 42'' | E 3° 42′ 51'' |
| 1404 | Ilare Ilara,Ilare | Nigeria, Ondo State Ifedore | populated place population 7,685 | N 7° 21′ 2'' | E 5° 6′ 48'' |
| 1405 | Ilala Ilala,Ilata | Nigeria, Kwara State Irepodun | populated place | N 8° 19′ 28'' | E 4° 49′ 25'' |
| 1406 | Ikot Udo Ikot Udo | Nigeria, Akwa Ibom State Mkpat Enin | populated place | N 4° 39′ 15'' | E 7° 44′ 26'' |
| 1407 | Ikot Okoro Ikot Okoro | Nigeria, Akwa Ibom State Oruk Anam | populated place | N 4° 54′ 8'' | E 7° 42′ 39'' |
1408  | Shebshi Mountains Monts Schebschi,Schebschi-Gebirge,Schebshi Mountains,Shebshi Mountains | Nigeria, | mountains | N 8° 37′ 48'' | E 11° 46′ 58'' |
| 1409 | Share Forest Reserve Ilorin Native Area Number 6,Share Forest Reserve | Nigeria, Kwara State | forest reserve | N 8° 46′ 0'' | E 4° 58′ 0'' |
| 1410 | Sangiwa Native Area Forest Reserve Sangiwa Native Area Forest Reserve,Sangiwa Sokoto Native Area Number 21 | Nigeria, | forest reserve | N 12° 45′ 0'' | E 5° 35′ 0'' |
| 1411 | Sambreiro Sambreiro,Sombreiro | Nigeria, Rivers State | forest reserve | N 5° 19′ 32'' | E 6° 43′ 56'' |
| 1412 | Samamiya Samamiya,Samammiya,Saman | Nigeria, Jigawa State Birnin Kudu > Wurno | populated place population 8,087 | N 11° 20′ 55'' | E 9° 38′ 23'' |
| 1413 | Sainyinan Native Area Forest Reserve Sainyinan Native Area Forest Reserve,Sokoto Native Area Number 32 | Nigeria, | forest reserve | N 12° 37′ 0'' | E 4° 47′ 0'' |
| 1414 | Sabon Gari Kolo,Sabon Gari | Nigeria, Sokoto Tangaza > Magonho | populated place | N 13° 28′ 7'' | E 5° 0′ 49'' |
| 1415 | Runka Runka | Nigeria, Katsina State Safana > Runka A | populated place population 12,665 | N 12° 26′ 52'' | E 7° 18′ 33'' |
| 1416 | Rumuekpe Rumuecke,Rumuekpe | Nigeria, | gasfield | N 4° 59′ 0'' | E 6° 45′ 0'' |
| 1417 | Ruma Forest Reserve Katsina Native Area Number 2,Ruma Forest Reserve | Nigeria, | forest reserve | N 12° 25′ 0'' | E 7° 7′ 0'' |
| 1418 | River Moshi Forest Reserve Kaiama Native Area Number 1,River Moshi Forest Reserve | Nigeria, | forest reserve | N 9° 10′ 0'' | E 4° 15′ 0'' |
| 1419 | River Kampe Forest Reserve Pategi Native Area Number 1,River Kampe Forest Reserve | Nigeria, Kwara State | forest reserve | N 8° 28′ 18'' | E 5° 53′ 49'' |
| 1420 | River Iwa Forest Reserve Ilorin Native Area Number 15,River Iwa Forest Reserve | Nigeria, Kwara State | forest reserve | N 8° 59′ 16'' | E 4° 32′ 42'' |
| 1421 | Ribako Forest Reserve Ribako Forest Reserve,Zaria Native Area Number 7 | Nigeria, | forest reserve | N 10° 37′ 4'' | E 7° 50′ 1'' |
| 1422 | Rakuma Native Area Forest Reserve Rakuma Native Area Forest Reserve,Rakuma Sokoto Native Area Number 31 | Nigeria, | forest reserve | N 12° 30′ 0'' | E 5° 53′ 0'' |
| 1423 | Rahama Rahama | Nigeria, Kaduna State Kauru > Pari | populated place | N 9° 47′ 50'' | E 8° 31′ 34'' |
| 1424 | Rafin Bauna South Forest Reserve Jos Native Area Number 4,Rafin Bauna South Forest Reserve | Nigeria, | forest reserve | N 9° 51′ 0'' | E 8° 49′ 0'' |
1425  | Peu Lake Lake Peu,Peu Lake | Nigeria, Taraba State | lake | N 8° 17′ 37'' | E 10° 49′ 22'' |
| 1426 | Panyam Panyam | Nigeria, Plateau State Mangu | populated place population 10,715 | N 9° 24′ 27'' | E 9° 12′ 53'' |
| 1427 | Lake Paida Lake Padaro,Lake Paida | Nigeria, Adamawa | lake | N 9° 11′ 36'' | E 12° 41′ 30'' |
| 1428 | Ozarra Ozara,Ozarra | Nigeria, Delta Ika South | populated place | N 6° 19′ 27'' | E 6° 8′ 26'' |
| 1429 | Owelu Owelu | Nigeria, Imo State Owerri North | populated place | N 5° 31′ 8'' | E 7° 4′ 22'' |
| 1430 | Ovu Ovu | Nigeria, Delta Ethiope East | populated place | N 5° 45′ 0'' | E 5° 54′ 0'' |
| 1431 | Otu-Jeremi Jeremi Town,Otu-Chievwen,Otu-Ghievwen,Otu-Jeremi,Otu-Ughievwen,Otughievwen,Otujeremi | Nigeria, Delta Ughelli South | seat of a second-order administrative division | N 5° 26′ 17'' | E 5° 52′ 41'' |
| 1432 | Ososo Ososo | Nigeria, Edo State Akoko-Edo | populated place | N 7° 24′ 43'' | E 6° 15′ 22'' |
| 1433 | Osi Forest Reserve Ilorin Native Area Number 3,Osi Forest Reserve | Nigeria, | forest reserve | N 8° 11′ 2'' | E 5° 21′ 46'' |
| 1434 | Osho Forest Reserve Ibadan Native Area,Osho Forest Reserve | Nigeria, | forest reserve | N 7° 27′ 41'' | E 3° 38′ 28'' |
| 1435 | Osara Forest Reserve Igbirra Native Area,Osara Forest Reserve | Nigeria, Kogi State | forest reserve | N 7° 41′ 32'' | E 6° 36′ 3'' |
| 1436 | Oruku Oruku | Nigeria, Enugu State Nkanu East | populated place | N 6° 26′ 7'' | E 7° 38′ 57'' |
| 1437 | Anam Anam,Onoma,Oroma Etiti | Nigeria, Anambra Anambra West | populated place | N 6° 19′ 46'' | E 6° 44′ 48'' |
| 1438 | Orogwe Orogwe | Nigeria, Imo State Owerri West | populated place | N 5° 32′ 21'' | E 6° 58′ 51'' |
| 1439 | Orlu Awlu,Orlu | Nigeria, Imo State Orlu | seat of a second-order administrative division population 9,351 | N 5° 47′ 44'' | E 7° 2′ 6'' |
| 1440 | Orji Orji | Nigeria, Imo State Owerri North | populated place | N 5° 31′ 16'' | E 7° 3′ 2'' |
| 1441 | Orie Orie | Nigeria, Delta Isoko North | populated place | N 5° 30′ 33'' | E 6° 19′ 27'' |
| 1442 | Orerokpe Orerokpe,Orerukpe | Nigeria, Delta Okpe | seat of a second-order administrative division population 5,893 | N 5° 38′ 14'' | E 5° 53′ 24'' |
| 1443 | Oraukwu Oraukwu | Nigeria, Anambra Idemili South | populated place | N 6° 4′ 47'' | E 6° 57′ 57'' |
| 1444 | Oratta Oratta | Nigeria, Imo State Owerri North | populated place | N 5° 29′ 40'' | E 7° 4′ 23'' |
| 1445 | Opi Opi | Nigeria, Enugu State Nsukka | populated place population 11,237 | N 6° 46′ 56'' | E 7° 25′ 59'' |
| 1446 | Onne Awne,Onne | Nigeria, Rivers State Eleme | populated place | N 4° 43′ 28'' | E 7° 9′ 9'' |
| 1447 | Omupo Omupo | Nigeria, Kwara State Ifelodun | populated place | N 8° 16′ 29'' | E 4° 47′ 44'' |
| 1448 | Oloyan Forest Reserve Ilorin Native Area Number 4,Oloyan Forest Reserve | Nigeria, Oyo State | forest reserve | N 8° 5′ 8'' | E 4° 30′ 23'' |
| 1449 | Olomu Olomu | Nigeria, Osun State Ife South | populated place | N 7° 11′ 58'' | E 4° 27′ 49'' |
| 1450 | Oloibiri Olobiri,Oloibiri,Oloimpiri,Ολοϊμπίρι | Nigeria, Bayelsa State Ogbia | populated place | N 4° 40′ 18'' | E 6° 18′ 48'' |
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