| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
3401  | Oraba Oraba | Uganda, Northern Region Koboko District > Koboko County > Kuluba | populated place | N 3° 32′ 2'' | E 30° 53′ 21'' |
| 3402 | Opwateta Opwateta,Pweteta | Uganda, Eastern Region Butebo District > Butebo County > Opwateta | populated place | N 1° 15′ 0'' | E 33° 51′ 0'' |
| 3403 | Opot Apot,Opot | Uganda, Eastern Region Ngora District > Ngora County > Kobwin | populated place | N 1° 22′ 0'' | E 33° 40′ 0'' |
3404  | Opoi Opoi | Uganda, Northern Region Arua District > Vurra County > Ajia | hill | N 2° 50′ 43'' | E 31° 5′ 0'' |
| 3405 | Opit Opit | Uganda, Northern Region Oyam District > Oyam County > Ngai | hill | N 2° 35′ 18'' | E 32° 28′ 18'' |
| 3406 | Opio Opio | Uganda, Northern Region Amuru District > Kilak County > Lamogi | hill | N 2° 56′ 42'' | E 32° 3′ 26'' |
| 3407 | Oniangoli Oniangoli | Uganda, Northern Region Moyo District > West Moyo > Metu | mountain | N 3° 48′ 0'' | E 31° 50′ 0'' |
| 3408 | Ongunai Angunai,Ongunai | Uganda, Eastern Region Soroti District > Soroti > Kamuda | populated place | N 1° 46′ 53'' | E 33° 31′ 23'' |
| 3409 | Ongoratok Ngoratok,Ongoratok | Uganda, Eastern Region Soroti District > Soroti > Arapai | populated place | N 1° 46′ 26'' | E 33° 36′ 2'' |
| 3410 | Ongako Ongako,Ongoko | Uganda, Northern Region Omoro District > Omoro County > Ongako | populated place | N 2° 40′ 51'' | E 32° 14′ 21'' |
| 3411 | Ongariama Ngaliama,Ongariama | Uganda, Eastern Region Soroti District > Soroti > Tubur | populated place | N 1° 59′ 2'' | E 33° 29′ 19'' |
| 3412 | Omyemya Emyemya,Omyemya | Uganda, Eastern Region Amuria District > Kapelebyong > Kapelebyong | populated place | N 2° 13′ 0'' | E 33° 45′ 0'' |
| 3413 | Omunyir Omunyir,Omunyiri | Uganda, Eastern Region Amuria District > Amuria County > Morungatuny | populated place | N 2° 9′ 0'' | E 33° 29′ 0'' |
| 3414 | Omugo Omogo,Omugo | Uganda, Northern Region Arua District > Terego County > Omugo | populated place | N 3° 16′ 28'' | E 31° 6′ 51'' |
| 3415 | Omugenya Magenya,Omugenya | Uganda, Eastern Region Soroti District > Soroti > Gweri | populated place | N 1° 44′ 17'' | E 33° 44′ 50'' |
| 3416 | Omugei Amugei,Omugei | Uganda, Eastern Region Amuria District > Kapelebyong > Akoromit | populated place | N 2° 9′ 0'' | E 33° 47′ 0'' |
| 3417 | Omudoi Omodoi,Omudoi | Uganda, Eastern Region Katakwi District > Usuk > Omodoi | populated place | N 1° 48′ 54'' | E 33° 59′ 54'' |
| 3418 | Omubihembe Muembe,Omubihembe | Uganda, Western Region Ibanda > Ibanda > Keihangara | hill | S 0° 10′ 0'' | E 30° 37′ 0'' |
| 3419 | Omotoi Motoi,Omotoi | Uganda, Eastern Region Pallisa District > Pallisa County > Kameke | populated place | N 1° 19′ 0'' | E 33° 47′ 0'' |
| 3420 | Omoro Moru,Omoro | Uganda, Northern Region Omoro District > Omoro County > Odek | hill | N 2° 42′ 0'' | E 32° 44′ 0'' |
| 3421 | Omolotok Molotok,Omolotok | Uganda, Eastern Region Serere District > Kasilo > Pingire | populated place | N 1° 29′ 0'' | E 33° 23′ 0'' |
| 3422 | Omodoi Amunoi,Omodoi | Uganda, Eastern Region Amuria District > Kapelebyong > Acowa | populated place | N 2° 3′ 0'' | E 33° 48′ 0'' |
| 3423 | Omoce Omoce,Omoche | Uganda, Eastern Region Soroti District > Soroti > Tubur | populated place | N 1° 55′ 32'' | E 33° 29′ 50'' |
| 3424 | Omier Auu,Omier | Uganda, Northern Region Zombo District > Okoro County > Nyapea | hill | N 2° 31′ 0'' | E 30° 58′ 0'' |
| 3425 | Omid Omid,Omidi | Uganda, Northern Region Alebtong District > Moroto County > Amugo | populated place | N 2° 2′ 0'' | E 33° 21′ 0'' |
| 3426 | Ombachi Ombache,Ombachi | Uganda, Northern Region Arua District > Ayivu County > Manibe | populated place | N 3° 2′ 59'' | E 30° 56′ 36'' |
| 3427 | Omatikile Omatakire,Omatikile | Uganda, Eastern Region Soroti District > Soroti > Tubur | populated place | N 1° 57′ 9'' | E 33° 31′ 9'' |
3428  | Omanimani Akinyo,Kangole,Manimani,Omanimani,River Natakolem | Uganda, Northern Region Nakapiripirit District | stream | N 2° 29′ 53'' | E 34° 14′ 19'' |
| 3429 | Omagara Magara,Omagara | Uganda, Eastern Region Serere District > Serere County > Kateta | populated place | N 1° 27′ 0'' | E 33° 28′ 0'' |
| 3430 | Olwerai Lwerai,Olwerai | Uganda, Eastern Region Soroti District > Soroti > Kamuda | populated place | N 1° 42′ 57'' | E 33° 28′ 11'' |
| 3431 | Oluvu Olovu,Oluvu | Uganda, Northern Region Maracha > Maracha County > Kijomoro | hill | N 3° 11′ 0'' | E 30° 53′ 0'' |
| 3432 | Oluvu Olovu,Oluvu | Uganda, Northern Region Maracha > Maracha County > Oluvu | populated place | N 3° 11′ 48'' | E 30° 52′ 7'' |
| 3433 | Olunakoli Alunakoli,Olunakoli | Uganda, Eastern Region Kumi District > Kumi County > Nyero | hill | N 1° 27′ 0'' | E 33° 50′ 0'' |
| 3434 | Oloroi Aloloi,Oloroi | Uganda, Eastern Region Kaberamaido District > Kalaki County > Anyara | populated place | N 2° 1′ 0'' | E 33° 20′ 0'' |
| 3435 | Olio Kolyo,Olio | Uganda, Eastern Region Soroti District > Soroti > Kamuda | populated place | N 1° 46′ 6'' | E 33° 30′ 47'' |
| 3436 | Olelai Olelai,Olerayi | Uganda, Eastern Region Katakwi District > Usuk > Usuk | populated place | N 2° 2′ 0'' | E 33° 56′ 0'' |
| 3437 | Olekai Oleka,Olekai | Uganda, Eastern Region Amuria District > Amuria County > Asamuk | populated place | N 1° 55′ 31'' | E 33° 40′ 44'' |
| 3438 | Olecoi Olechoi,Olecoi | Uganda, Eastern Region Soroti District > Soroti > Katine | populated place | N 1° 52′ 35'' | E 33° 29′ 8'' |
| 3439 | Oleba Oleba,Oleiba | Uganda, Northern Region Maracha > Maracha County > Oleba | populated place | N 3° 17′ 58'' | E 30° 55′ 43'' |
| 3440 | Old Rom Old Rom | Uganda, Northern Region Kitgum District > Chua County > Orom | mountain | N 3° 22′ 33'' | E 33° 35′ 40'' |
| 3441 | Old Nariam Nariam,Old Nariam | Uganda, Eastern Region Katakwi District > Usuk > Ngariam | populated place | N 1° 55′ 45'' | E 34° 6′ 29'' |
| 3442 | Old Dufile Dufile Old Fort,Old Dufile | Uganda, Northern Region Moyo District > West Moyo > Dufile | populated place | N 3° 34′ 0'' | E 31° 58′ 0'' |
| 3443 | Okworo Akworo,Okworo | Uganda, Eastern Region Bukedea District > Bukedea County > Bukedea | populated place | N 1° 20′ 0'' | E 34° 6′ 0'' |
| 3444 | Okutomoro Okutomoro,Otukomoro | Uganda, Eastern Region Soroti District > Soroti > Asuret | hill | N 1° 36′ 28'' | E 33° 37′ 16'' |
| 3445 | Okusoma Okusoma | Uganda, Western Region Kasese District > Bukonjo > Kyarumba | peak | N 0° 19′ 2'' | E 29° 52′ 24'' |
| 3446 | Okumeri Okume,Okumeri | Uganda, Eastern Region Ngora District > Ngora County > Kapir | populated place | N 1° 31′ 50'' | E 33° 46′ 45'' |
| 3447 | Okude Kude,Okude | Uganda, Eastern Region Amuria District > Amuria County > Akeriau | populated place | N 2° 4′ 0'' | E 33° 22′ 0'' |
| 3448 | Okoyu Okayu,Okoyu | Uganda, Northern Region Yumbe District > Aringa County > Odravu | populated place | N 3° 20′ 59'' | E 31° 16′ 15'' |
| 3449 | Okimenga Kimenga,Okimenga | Uganda, Eastern Region Serere District > Kasilo > Pingire | populated place | N 1° 28′ 0'' | E 33° 22′ 0'' |
| 3450 | Okiji Island Kigi Island,Okiji Island | Uganda, Eastern Region Kaberamaido District | island | N 1° 37′ 42'' | E 33° 9′ 27'' |
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