| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
501  | Oraba Oraba | Uganda, Northern Region Koboko District > Koboko County > Kuluba | populated place | N 3° 32′ 2'' | E 30° 53′ 21'' |
| 502 | Opwateta Opwateta,Pweteta | Uganda, Eastern Region Butebo District > Butebo County > Opwateta | populated place | N 1° 15′ 0'' | E 33° 51′ 0'' |
| 503 | Opot Apot,Opot | Uganda, Eastern Region Ngora District > Ngora County > Kobwin | populated place | N 1° 22′ 0'' | E 33° 40′ 0'' |
| 504 | Ongunai Angunai,Ongunai | Uganda, Eastern Region Soroti District > Soroti > Kamuda | populated place | N 1° 46′ 53'' | E 33° 31′ 23'' |
| 505 | Ongoratok Ngoratok,Ongoratok | Uganda, Eastern Region Soroti District > Soroti > Arapai | populated place | N 1° 46′ 26'' | E 33° 36′ 2'' |
| 506 | Ongako Ongako,Ongoko | Uganda, Northern Region Omoro District > Omoro County > Ongako | populated place | N 2° 40′ 51'' | E 32° 14′ 21'' |
| 507 | Ongariama Ngaliama,Ongariama | Uganda, Eastern Region Soroti District > Soroti > Tubur | populated place | N 1° 59′ 2'' | E 33° 29′ 19'' |
| 508 | Omyemya Emyemya,Omyemya | Uganda, Eastern Region Amuria District > Kapelebyong > Kapelebyong | populated place | N 2° 13′ 0'' | E 33° 45′ 0'' |
| 509 | Omunyir Omunyir,Omunyiri | Uganda, Eastern Region Amuria District > Amuria County > Morungatuny | populated place | N 2° 9′ 0'' | E 33° 29′ 0'' |
| 510 | Omugo Omogo,Omugo | Uganda, Northern Region Arua District > Terego County > Omugo | populated place | N 3° 16′ 28'' | E 31° 6′ 51'' |
| 511 | Omugenya Magenya,Omugenya | Uganda, Eastern Region Soroti District > Soroti > Gweri | populated place | N 1° 44′ 17'' | E 33° 44′ 50'' |
| 512 | Omugei Amugei,Omugei | Uganda, Eastern Region Amuria District > Kapelebyong > Akoromit | populated place | N 2° 9′ 0'' | E 33° 47′ 0'' |
| 513 | Omudoi Omodoi,Omudoi | Uganda, Eastern Region Katakwi District > Usuk > Omodoi | populated place | N 1° 48′ 54'' | E 33° 59′ 54'' |
| 514 | Omotoi Motoi,Omotoi | Uganda, Eastern Region Pallisa District > Pallisa County > Kameke | populated place | N 1° 19′ 0'' | E 33° 47′ 0'' |
| 515 | Omolotok Molotok,Omolotok | Uganda, Eastern Region Serere District > Kasilo > Pingire | populated place | N 1° 29′ 0'' | E 33° 23′ 0'' |
| 516 | Omodoi Amunoi,Omodoi | Uganda, Eastern Region Amuria District > Kapelebyong > Acowa | populated place | N 2° 3′ 0'' | E 33° 48′ 0'' |
| 517 | Omoce Omoce,Omoche | Uganda, Eastern Region Soroti District > Soroti > Tubur | populated place | N 1° 55′ 32'' | E 33° 29′ 50'' |
| 518 | Omid Omid,Omidi | Uganda, Northern Region Alebtong District > Moroto County > Amugo | populated place | N 2° 2′ 0'' | E 33° 21′ 0'' |
| 519 | Ombachi Ombache,Ombachi | Uganda, Northern Region Arua District > Ayivu County > Manibe | populated place | N 3° 2′ 59'' | E 30° 56′ 36'' |
| 520 | Omatikile Omatakire,Omatikile | Uganda, Eastern Region Soroti District > Soroti > Tubur | populated place | N 1° 57′ 9'' | E 33° 31′ 9'' |
| 521 | Omagara Magara,Omagara | Uganda, Eastern Region Serere District > Serere County > Kateta | populated place | N 1° 27′ 0'' | E 33° 28′ 0'' |
| 522 | Olwerai Lwerai,Olwerai | Uganda, Eastern Region Soroti District > Soroti > Kamuda | populated place | N 1° 42′ 57'' | E 33° 28′ 11'' |
| 523 | Oluvu Olovu,Oluvu | Uganda, Northern Region Maracha > Maracha County > Oluvu | populated place | N 3° 11′ 48'' | E 30° 52′ 7'' |
| 524 | Oloroi Aloloi,Oloroi | Uganda, Eastern Region Kaberamaido District > Kalaki County > Anyara | populated place | N 2° 1′ 0'' | E 33° 20′ 0'' |
| 525 | Olio Kolyo,Olio | Uganda, Eastern Region Soroti District > Soroti > Kamuda | populated place | N 1° 46′ 6'' | E 33° 30′ 47'' |
| 526 | Olelai Olelai,Olerayi | Uganda, Eastern Region Katakwi District > Usuk > Usuk | populated place | N 2° 2′ 0'' | E 33° 56′ 0'' |
| 527 | Olekai Oleka,Olekai | Uganda, Eastern Region Amuria District > Amuria County > Asamuk | populated place | N 1° 55′ 31'' | E 33° 40′ 44'' |
| 528 | Olecoi Olechoi,Olecoi | Uganda, Eastern Region Soroti District > Soroti > Katine | populated place | N 1° 52′ 35'' | E 33° 29′ 8'' |
| 529 | Oleba Oleba,Oleiba | Uganda, Northern Region Maracha > Maracha County > Oleba | populated place | N 3° 17′ 58'' | E 30° 55′ 43'' |
| 530 | Old Nariam Nariam,Old Nariam | Uganda, Eastern Region Katakwi District > Usuk > Ngariam | populated place | N 1° 55′ 45'' | E 34° 6′ 29'' |
| 531 | 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'' |
| 532 | Okworo Akworo,Okworo | Uganda, Eastern Region Bukedea District > Bukedea County > Bukedea | populated place | N 1° 20′ 0'' | E 34° 6′ 0'' |
| 533 | Okumeri Okume,Okumeri | Uganda, Eastern Region Ngora District > Ngora County > Kapir | populated place | N 1° 31′ 50'' | E 33° 46′ 45'' |
| 534 | Okude Kude,Okude | Uganda, Eastern Region Amuria District > Amuria County > Akeriau | populated place | N 2° 4′ 0'' | E 33° 22′ 0'' |
| 535 | Okoyu Okayu,Okoyu | Uganda, Northern Region Yumbe District > Aringa County > Odravu | populated place | N 3° 20′ 59'' | E 31° 16′ 15'' |
| 536 | Okimenga Kimenga,Okimenga | Uganda, Eastern Region Serere District > Kasilo > Pingire | populated place | N 1° 28′ 0'' | E 33° 22′ 0'' |
| 537 | Okeyu Okeyo,Okeyu | Uganda, Northern Region Zombo District > Okoro County > Paidha | populated place | N 2° 25′ 10'' | E 30° 57′ 14'' |
| 538 | Okapel Kaperu,Okapel | Uganda, Eastern Region Kaberamaido District > Kaberamaido County > Aperkira | populated place | N 1° 44′ 37'' | E 33° 13′ 18'' |
| 539 | Ojom Ojom,Ojomi | Uganda, Eastern Region Soroti District > Soroti > Katine | populated place | N 1° 47′ 50'' | E 33° 35′ 0'' |
| 540 | Ojingai Ogingai,Ojingai | Uganda, Eastern Region Soroti District > Soroti > Arapai | populated place | N 1° 45′ 5'' | E 33° 34′ 53'' |
| 541 | Ajaa Ajaa,Ojaa | Uganda, Northern Region Apac District > Maruzi County > Ibuje | populated place | N 1° 50′ 19'' | E 32° 23′ 19'' |
| 542 | Ogwam Ogwam,Oswam | Uganda, Northern Region Omoro District > Omoro County > Lalogi | populated place | N 2° 41′ 27'' | E 32° 25′ 55'' |
| 543 | Ogosoi Ogosai,Ogosoi | Uganda, Eastern Region Kumi District > Kumi County > Mukongoro | populated place | N 1° 20′ 0'' | E 33° 50′ 0'' |
| 544 | Ogomo Ogoma,Ogomo | Uganda, Eastern Region Kumi District > Kumi County > Nyero | populated place | N 1° 26′ 0'' | E 33° 50′ 0'' |
| 545 | Ogangai Ogangai,Ogange | Uganda, Eastern Region Amuria District > Amuria County > Morungatuny | populated place | N 2° 11′ 0'' | E 33° 31′ 0'' |
| 546 | Odoon Odon,Odoon | Uganda, Eastern Region Amuria District > Amuria County > Asamuk | populated place | N 1° 57′ 17'' | E 33° 43′ 58'' |
| 547 | Odokay Odokay,Odokayi | Uganda, Eastern Region Serere District > Serere County > Atiira | populated place | N 1° 35′ 27'' | E 33° 32′ 2'' |
| 548 | Odoit Odoit,Odoti | Uganda, Eastern Region Kaberamaido District > Kaberamaido County > Kaberamaido | populated place | N 1° 45′ 15'' | E 33° 7′ 28'' |
| 549 | Oderai Odera,Oderai | Uganda, Eastern Region Katakwi District > Usuk > Usuk | populated place | N 2° 4′ 0'' | E 33° 57′ 0'' |
| 550 | Odekere Adekere,Dekere,Odekere | Uganda, Eastern Region Kaberamaido District > Kaberamaido County > Ochero | populated locality | N 1° 37′ 42'' | E 32° 59′ 11'' |
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