| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
2901  | Ogbonaha Ogbomaha,Ogbonaha,Ogbonoha,Ogbonoma | Nigeria, Kogi State Omala | populated place | N 7° 48′ 26'' | E 7° 27′ 7'' |
2902  | Ogbomosho Forest Reserve | Nigeria, Oyo State | forest reserve | N 8° 6′ 8'' | E 4° 14′ 2'' |
| 2903 | Ogbagbo Ogbagbo,Ogbogbo,Ogbogido,Ogbogodo | Nigeria, Kogi State Dekina | populated place | N 7° 32′ 4'' | E 7° 20′ 12'' |
| 2904 | Agbobo Agbobo,Ogbobo,Ogbogbo | Nigeria, Kogi State Igalamela-Odolu | populated place | N 7° 6′ 24'' | E 6° 48′ 49'' |
| 2905 | Obe-Adun Obe,Obe Adu,Obe-Adun,Ogbe Adun | Nigeria, Ondo State Ilaje | populated place | N 6° 1′ 25'' | E 4° 52′ 1'' |
| 2906 | Ogbe Ogbe,Ogpe,Okpe | Nigeria, Kogi State Olamaboro | populated place | N 7° 15′ 57'' | E 7° 32′ 36'' |
| 2907 | Oghada Ogada,Oghada | Nigeria, Edo State Uhunmwonde | populated place | N 6° 22′ 48'' | E 6° 6′ 20'' |
| 2908 | Ofunatam Afunatam,Afuntam,Ofunatam | Nigeria, Cross River State Ikom | populated place | N 6° 8′ 57'' | E 8° 27′ 32'' |
| 2909 | Oforekpe Oferekpe,Oforekpe,Oforekpe Agbaja | Nigeria, Ebonyi State Izzi | populated place | N 6° 33′ 5'' | E 8° 14′ 18'' |
| 2910 | Odun Forest Reserve | Nigeria, | forest reserve | N 8° 7′ 0'' | E 4° 58′ 0'' |
| 2911 | Odau Odan,Odau,Odua | Nigeria, Rivers State Abua/Odual | populated place | N 4° 55′ 21'' | E 6° 27′ 8'' |
| 2912 | Odo Ragun Odo Ragun,Odo-Ragusin,Raguskin | Nigeria, Lagos Epe | populated place | N 6° 39′ 8'' | E 3° 59′ 13'' |
| 2913 | Odo-Owa Odo Erin,Odo-Ehin,Odo-Owa | Nigeria, Ekiti State Ijero | populated place | N 7° 53′ 5'' | E 5° 4′ 11'' |
| 2914 | Ode-Ore Ode-Ore,Odo Ore,Odore | Nigeria, Kwara State Isin | populated place | N 8° 21′ 8'' | E 5° 1′ 47'' |
| 2915 | Odo-Oba Ejemu Odo Oba Ejemu,Odo-Awba,Odo-Oba,Odo-Oba Ejemu,Odo-ObaEjemu | Nigeria, Oyo State Oyo East | populated place | N 7° 50′ 49'' | E 4° 4′ 46'' |
| 2916 | Odo-Oba Ie-Awbe,Ile-Oba,Odo Oba,Odo-Oba | Nigeria, Oyo State Oyo East | populated place | N 7° 54′ 6'' | E 4° 4′ 45'' |
| 2917 | Odofin Igbana Idofin Igbanna,Odofin Igbana,Odofin Igbanna | Nigeria, Kwara State Oke Ero | populated place | N 8° 11′ 59'' | E 5° 15′ 18'' |
| 2918 | Odirogu Ikwake Amatangolo Odirogu,Odirogo,Odirogu | Nigeria, Rivers State Degema | populated place | N 4° 45′ 10'' | E 6° 57′ 56'' |
| 2919 | Odi-Odeyale Odi Adejale,Odi Odeyale,Odi-Odeyale | Nigeria, Oyo State Ona Ara | populated place | N 7° 19′ 16'' | E 4° 0′ 38'' |
| 2920 | Odida Odida,Odidu | Nigeria, Anambra Idemili North | populated place | N 6° 6′ 40'' | E 6° 57′ 4'' |
| 2921 | Ode-Saka Awde-Shaka,Ode Saka,Ode-Saka,Ode-Shaka | Nigeria, Oyo State Surulere | populated place | N 8° 15′ 7'' | E 4° 25′ 49'' |
| 2922 | Odenyi Adenye,Odenyi,Udenyi | Nigeria, Kogi State Bassa | populated place | N 7° 46′ 47'' | E 7° 3′ 14'' |
| 2923 | Odegune Odegume,Odegune | Nigeria, Edo State Esan South-East | populated place | N 6° 36′ 25'' | E 6° 39′ 15'' |
| 2924 | Ochonkie Ochankie,Ochonkie | Nigeria, Delta Oshimili North | populated place | N 6° 19′ 19'' | E 6° 39′ 47'' |
| 2925 | Ochokwu Ochokwu,Otabo,Otobo | Nigeria, Ebonyi State Ikwo | populated place | N 6° 1′ 26'' | E 8° 12′ 20'' |
| 2926 | Ochokocho-Obo Chokorocho,Ochokocho-Obo,Ochokorocho | Nigeria, Rivers State | populated place | N 4° 35′ 46'' | E 7° 0′ 38'' |
| 2927 | Ochadam Asadam,Assadam,Ochadam | Nigeria, Kogi State Ofu | populated place | N 7° 23′ 46'' | E 7° 2′ 17'' |
| 2928 | Obolo-Eke (1) Obolo Eke,Obolo-Eke (1) | Nigeria, Enugu State Udenu | populated place population 5,842 | N 6° 53′ 0'' | E 7° 38′ 0'' |
| 2929 | Obo-Ile Obo Ile,Obo-Ile,Old-Obo | Nigeria, Kwara State Ekiti | populated place | N 8° 4′ 35'' | E 5° 19′ 4'' |
| 2930 | Obogu Obeagu,Obego,Obogu | Nigeria, Ebonyi State Ishielu | populated place | N 6° 35′ 48'' | E 7° 43′ 31'' |
| 2931 | Uberomu Obieroumu,Uberomu,Ubierumu | Nigeria, Edo State Esan North-East | populated place | N 6° 40′ 7'' | E 6° 16′ 53'' |
| 2932 | Obe-Nla Obe-Nla,Obe-Nla III,Obe-Nla Three | Nigeria, Ondo State | populated place | N 6° 0′ 10'' | E 4° 53′ 9'' |
| 2933 | Ogbele Obele-Ibaa,Obelle,Ogbele | Nigeria, Rivers State Ahoada East | populated place | N 4° 55′ 11'' | E 6° 40′ 30'' |
| 2934 | Ogbeinyama Obeinyama,Obgeinyama,Ogbeinyama | Nigeria, Delta Bomadi | populated place | N 5° 13′ 19'' | E 5° 50′ 5'' |
| 2935 | Obazagbon-Nugu Obazagbon-Nugu,Obazogbon | Nigeria, Edo State Orhionmwon | populated place | N 6° 2′ 9'' | E 6° 4′ 48'' |
| 2936 | Obanlike Abanliko,Obanlike,Obanliko | Nigeria, Cross River State Obanliku | populated place | N 6° 36′ 22'' | E 9° 15′ 7'' |
| 2937 | Oban Group Forest Reserve | Nigeria, Cross River State | forest reserve | N 5° 24′ 5'' | E 8° 25′ 5'' |
2938  | Oba Hill Awba,Oba Hill,Oba Hills | Nigeria, Osun State Ola Oluwa | hill | N 7° 47′ 37'' | E 4° 6′ 33'' |
| 2939 | Obaghoro Bahoro,Obaghoro,Obagnoro | Nigeria, Delta Warri North | populated place | N 5° 51′ 13'' | E 5° 9′ 41'' |
| 2940 | Beri Beri,Nyobe Beeri,Yombe Beri | Nigeria, Rivers State Khana | populated place | N 4° 41′ 29'' | E 7° 25′ 44'' |
| 2941 | Nyimoa Nemoa,Nimua,Nyimoa | Nigeria, Kogi State Bassa | populated place | N 7° 52′ 0'' | E 7° 5′ 0'' |
| 2942 | Nyibango Hibango,Nyibango,Yibango | Nigeria, Adamawa Fufore | populated place | N 8° 57′ 30'' | E 12° 21′ 25'' |
| 2943 | Hosere Nyebe Hosere Nyebe,Hosere Nyebe Hill | Nigeria, Adamawa Fufore | hill | N 8° 56′ 37'' | E 12° 25′ 14'' |
| 2944 | Nyanya Nyanya,Nyonya | Nigeria, Cross River State Bekwarra | populated place | N 6° 40′ 50'' | E 8° 58′ 6'' |
| 2945 | Hosere Nyanbulo Hosere Nyanbulo,Hosere Nyanbulo Hill | Nigeria, Adamawa Fufore | hill | N 8° 58′ 54'' | E 12° 11′ 5'' |
| 2946 | Nyambula Nyambula,Nyambula Hill | Nigeria, Adamawa Mayo-Belwa | hill | N 8° 59′ 31'' | E 12° 9′ 52'' |
| 2947 | Nwajala Nwajala,Owagala | Nigeria, Kogi State Ibaji | populated place | N 6° 55′ 0'' | E 6° 48′ 0'' |
| 2948 | Nunkucu-Gona Nunkucha,Nunkucu,Nunkucu-Gona | Nigeria, Nasarawa State Akwanga | populated place | N 9° 8′ 32'' | E 8° 21′ 57'' |
| 2949 | Nung Ukim Ikot Esien Ikot Esien,Nung Ukim,Nung Ukim Ikot Esien | Nigeria, Akwa Ibom State Ikono | populated place | N 5° 16′ 34'' | E 7° 46′ 2'' |
| 2950 | Nungu Forest Reserve | Nigeria, Kaduna State | forest reserve | N 9° 20′ 42'' | E 8° 15′ 36'' |
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