| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
501  | Omugo Omogo,Omugo | Uganda, Northern Region Arua District > Terego County > Omugo | populated place | N 3° 16′ 28'' | E 31° 6′ 51'' |
| 502 | Omugenya Magenya,Omugenya | Uganda, Eastern Region Soroti District > Soroti > Gweri | populated place | N 1° 44′ 17'' | E 33° 44′ 50'' |
| 503 | Omugei Amugei,Omugei | Uganda, Eastern Region Amuria District > Kapelebyong > Akoromit | populated place | N 2° 9′ 0'' | E 33° 47′ 0'' |
| 504 | Omudoi Omodoi,Omudoi | Uganda, Eastern Region Katakwi District > Usuk > Omodoi | populated place | N 1° 48′ 54'' | E 33° 59′ 54'' |
| 505 | Omotoi Motoi,Omotoi | Uganda, Eastern Region Pallisa District > Pallisa County > Kameke | populated place | N 1° 19′ 0'' | E 33° 47′ 0'' |
| 506 | Omolotok Molotok,Omolotok | Uganda, Eastern Region Serere District > Kasilo > Pingire | populated place | N 1° 29′ 0'' | E 33° 23′ 0'' |
| 507 | Omodoi Amunoi,Omodoi | Uganda, Eastern Region Amuria District > Kapelebyong > Acowa | populated place | N 2° 3′ 0'' | E 33° 48′ 0'' |
| 508 | Omoce Omoce,Omoche | Uganda, Eastern Region Soroti District > Soroti > Tubur | populated place | N 1° 55′ 32'' | E 33° 29′ 50'' |
| 509 | Omid Omid,Omidi | Uganda, Northern Region Alebtong District > Moroto County > Amugo | populated place | N 2° 2′ 0'' | E 33° 21′ 0'' |
| 510 | Ombachi Ombache,Ombachi | Uganda, Northern Region Arua District > Ayivu County > Manibe | populated place | N 3° 2′ 59'' | E 30° 56′ 36'' |
| 511 | Omatikile Omatakire,Omatikile | Uganda, Eastern Region Soroti District > Soroti > Tubur | populated place | N 1° 57′ 9'' | E 33° 31′ 9'' |
| 512 | Omagara Magara,Omagara | Uganda, Eastern Region Serere District > Serere County > Kateta | populated place | N 1° 27′ 0'' | E 33° 28′ 0'' |
| 513 | Olwerai Lwerai,Olwerai | Uganda, Eastern Region Soroti District > Soroti > Kamuda | populated place | N 1° 42′ 57'' | E 33° 28′ 11'' |
| 514 | Oluvu Olovu,Oluvu | Uganda, Northern Region Maracha > Maracha County > Oluvu | populated place | N 3° 11′ 48'' | E 30° 52′ 7'' |
| 515 | Oloroi Aloloi,Oloroi | Uganda, Eastern Region Kaberamaido District > Kalaki County > Anyara | populated place | N 2° 1′ 0'' | E 33° 20′ 0'' |
| 516 | Olio Kolyo,Olio | Uganda, Eastern Region Soroti District > Soroti > Kamuda | populated place | N 1° 46′ 6'' | E 33° 30′ 47'' |
| 517 | Olelai Olelai,Olerayi | Uganda, Eastern Region Katakwi District > Usuk > Usuk | populated place | N 2° 2′ 0'' | E 33° 56′ 0'' |
| 518 | Olekai Oleka,Olekai | Uganda, Eastern Region Amuria District > Amuria County > Asamuk | populated place | N 1° 55′ 31'' | E 33° 40′ 44'' |
| 519 | Olecoi Olechoi,Olecoi | Uganda, Eastern Region Soroti District > Soroti > Katine | populated place | N 1° 52′ 35'' | E 33° 29′ 8'' |
| 520 | Oleba Oleba,Oleiba | Uganda, Northern Region Maracha > Maracha County > Oleba | populated place | N 3° 17′ 58'' | E 30° 55′ 43'' |
| 521 | Old Nariam Nariam,Old Nariam | Uganda, Eastern Region Katakwi District > Usuk > Ngariam | populated place | N 1° 55′ 45'' | E 34° 6′ 29'' |
| 522 | 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'' |
| 523 | Okworo Akworo,Okworo | Uganda, Eastern Region Bukedea District > Bukedea County > Bukedea | populated place | N 1° 20′ 0'' | E 34° 6′ 0'' |
| 524 | Okumeri Okume,Okumeri | Uganda, Eastern Region Ngora District > Ngora County > Kapir | populated place | N 1° 31′ 50'' | E 33° 46′ 45'' |
| 525 | Okude Kude,Okude | Uganda, Eastern Region Amuria District > Amuria County > Akeriau | populated place | N 2° 4′ 0'' | E 33° 22′ 0'' |
| 526 | Okoyu Okayu,Okoyu | Uganda, Northern Region Yumbe District > Aringa County > Odravu | populated place | N 3° 20′ 59'' | E 31° 16′ 15'' |
| 527 | Okimenga Kimenga,Okimenga | Uganda, Eastern Region Serere District > Kasilo > Pingire | populated place | N 1° 28′ 0'' | E 33° 22′ 0'' |
| 528 | Okeyu Okeyo,Okeyu | Uganda, Northern Region Zombo District > Okoro County > Paidha | populated place | N 2° 25′ 10'' | E 30° 57′ 14'' |
| 529 | Okapel Kaperu,Okapel | Uganda, Eastern Region Kaberamaido District > Kaberamaido County > Aperkira | populated place | N 1° 44′ 37'' | E 33° 13′ 18'' |
| 530 | Ojom Ojom,Ojomi | Uganda, Eastern Region Soroti District > Soroti > Katine | populated place | N 1° 47′ 50'' | E 33° 35′ 0'' |
| 531 | Ojingai Ogingai,Ojingai | Uganda, Eastern Region Soroti District > Soroti > Arapai | populated place | N 1° 45′ 5'' | E 33° 34′ 53'' |
| 532 | Ajaa Ajaa,Ojaa | Uganda, Northern Region Apac District > Maruzi County > Ibuje | populated place | N 1° 50′ 19'' | E 32° 23′ 19'' |
| 533 | Ogwam Ogwam,Oswam | Uganda, Northern Region Omoro District > Omoro County > Lalogi | populated place | N 2° 41′ 27'' | E 32° 25′ 55'' |
| 534 | Ogosoi Ogosai,Ogosoi | Uganda, Eastern Region Kumi District > Kumi County > Mukongoro | populated place | N 1° 20′ 0'' | E 33° 50′ 0'' |
| 535 | Ogomo Ogoma,Ogomo | Uganda, Eastern Region Kumi District > Kumi County > Nyero | populated place | N 1° 26′ 0'' | E 33° 50′ 0'' |
| 536 | Ogangai Ogangai,Ogange | Uganda, Eastern Region Amuria District > Amuria County > Morungatuny | populated place | N 2° 11′ 0'' | E 33° 31′ 0'' |
| 537 | Odoon Odon,Odoon | Uganda, Eastern Region Amuria District > Amuria County > Asamuk | populated place | N 1° 57′ 17'' | E 33° 43′ 58'' |
| 538 | Odokay Odokay,Odokayi | Uganda, Eastern Region Serere District > Serere County > Atiira | populated place | N 1° 35′ 27'' | E 33° 32′ 2'' |
| 539 | Odoit Odoit,Odoti | Uganda, Eastern Region Kaberamaido District > Kaberamaido County > Kaberamaido | populated place | N 1° 45′ 15'' | E 33° 7′ 28'' |
| 540 | Oderai Odera,Oderai | Uganda, Eastern Region Katakwi District > Usuk > Usuk | populated place | N 2° 4′ 0'' | E 33° 57′ 0'' |
| 541 | Odekere Adekere,Dekere,Odekere | Uganda, Eastern Region Kaberamaido District > Kaberamaido County > Ochero | populated locality | N 1° 37′ 42'' | E 32° 59′ 11'' |
| 542 | Ochebu Ochebu,Uchebu | Uganda, Northern Region Arua District > Madi-Okollo > Offaka | populated place | N 2° 41′ 19'' | E 31° 1′ 32'' |
| 543 | Ochanga Kochang,Ochanga | Uganda, Eastern Region Kaberamaido District > Kalaki County > Otuboi | populated place | N 1° 52′ 13'' | E 33° 16′ 48'' |
| 544 | Ochakai Ochakai,Ochoka | Uganda, Eastern Region Amuria District > Amuria County > Orungo | populated place | N 1° 56′ 20'' | E 33° 26′ 9'' |
| 545 | Obyonyo Obyango,Obyonyo | Uganda, Eastern Region Amuria District > Amuria County > Akeriau | populated place | N 2° 3′ 0'' | E 33° 23′ 0'' |
| 546 | Oburi Obure,Oburi | Uganda, Eastern Region Amuria District > Amuria County > Abarilela | populated place | N 2° 1′ 0'' | E 33° 48′ 0'' |
| 547 | Obulubulu Kabulubulu,Obulubulu | Uganda, Eastern Region Kaberamaido District > Kaberamaido County > Kobulubulu | populated place | N 1° 43′ 8'' | E 33° 7′ 27'' |
| 548 | Obalang Balinga,Obalang | Uganda, Eastern Region Amuria District > Kapelebyong > Obalanga | populated place | N 2° 10′ 22'' | E 33° 34′ 58'' |
| 549 | Nyiovura Nyio,Nyiovura | Uganda, Northern Region Arua District > Ayivu County > Adumi | populated place | N 3° 0′ 43'' | E 30° 49′ 54'' |
| 550 | Nyio Nvio,Nyio | Uganda, Northern Region Arua District > Ayivu County > Adumi | populated place | N 3° 2′ 19'' | E 30° 50′ 1'' |
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