| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
3001  | Olekai Oleka,Olekai | Uganda, Eastern Region Amuria District > Amuria County > Asamuk | populated place | N 1° 55′ 31'' | E 33° 40′ 44'' |
| 3002 | Olecoi Olechoi,Olecoi | Uganda, Eastern Region Soroti District > Soroti > Katine | populated place | N 1° 52′ 35'' | E 33° 29′ 8'' |
| 3003 | Oleba Oleba,Oleiba | Uganda, Northern Region Maracha > Maracha County > Oleba | populated place | N 3° 17′ 58'' | E 30° 55′ 43'' |
3004  | Old Rom Old Rom | Uganda, Northern Region Kitgum District > Chua County > Orom | mountain | N 3° 22′ 33'' | E 33° 35′ 40'' |
| 3005 | Old Nariam Nariam,Old Nariam | Uganda, Eastern Region Katakwi District > Usuk > Ngariam | populated place | N 1° 55′ 45'' | E 34° 6′ 29'' |
| 3006 | 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'' |
| 3007 | Okworo Akworo,Okworo | Uganda, Eastern Region Bukedea District > Bukedea County > Bukedea | populated place | N 1° 20′ 0'' | E 34° 6′ 0'' |
| 3008 | Okutomoro Okutomoro,Otukomoro | Uganda, Eastern Region Soroti District > Soroti > Asuret | hill | N 1° 36′ 28'' | E 33° 37′ 16'' |
| 3009 | Okusoma Okusoma | Uganda, Western Region Kasese District > Bukonjo > Kyarumba | peak | N 0° 19′ 2'' | E 29° 52′ 24'' |
| 3010 | Okumeri Okume,Okumeri | Uganda, Eastern Region Ngora District > Ngora County > Kapir | populated place | N 1° 31′ 50'' | E 33° 46′ 45'' |
| 3011 | Okude Kude,Okude | Uganda, Eastern Region Amuria District > Amuria County > Akeriau | populated place | N 2° 4′ 0'' | E 33° 22′ 0'' |
| 3012 | Okoyu Okayu,Okoyu | Uganda, Northern Region Yumbe District > Aringa County > Odravu | populated place | N 3° 20′ 59'' | E 31° 16′ 15'' |
| 3013 | Okimenga Kimenga,Okimenga | Uganda, Eastern Region Serere District > Kasilo > Pingire | populated place | N 1° 28′ 0'' | E 33° 22′ 0'' |
| 3014 | Okiji Island Kigi Island,Okiji Island | Uganda, Eastern Region Kaberamaido District | island | N 1° 37′ 42'' | E 33° 9′ 27'' |
| 3015 | Okeyu Okeyo,Okeyu | Uganda, Northern Region Zombo District > Okoro County > Paidha | populated place | N 2° 25′ 10'' | E 30° 57′ 14'' |
| 3016 | Okapel Kaperu,Okapel | Uganda, Eastern Region Kaberamaido District > Kaberamaido County > Aperkira | populated place | N 1° 44′ 37'' | E 33° 13′ 18'' |
| 3017 | Okela Okala,Okela | Uganda, Northern Region Amuru District > Kilak County > Atiak | hill | N 3° 25′ 17'' | E 32° 11′ 11'' |
| 3018 | Ojom Ojom,Ojomi | Uganda, Eastern Region Soroti District > Soroti > Katine | populated place | N 1° 47′ 50'' | E 33° 35′ 0'' |
| 3019 | Ojingai Ogingai,Ojingai | Uganda, Eastern Region Soroti District > Soroti > Arapai | populated place | N 1° 45′ 5'' | E 33° 34′ 53'' |
| 3020 | Ojewa Ojewa | Uganda, Northern Region Arua District > Terego County > Aii-Vu | hill | N 3° 12′ 56'' | E 31° 3′ 3'' |
| 3021 | Ajaa Ajaa,Ojaa | Uganda, Northern Region Apac District > Maruzi County > Ibuje | populated place | N 1° 50′ 19'' | E 32° 23′ 19'' |
| 3022 | Ogwam Ogwam,Oswam | Uganda, Northern Region Omoro District > Omoro County > Lalogi | populated place | N 2° 41′ 27'' | E 32° 25′ 55'' |
| 3023 | Ogosoi Ogosai,Ogosoi | Uganda, Eastern Region Kumi District > Kumi County > Mukongoro | populated place | N 1° 20′ 0'' | E 33° 50′ 0'' |
| 3024 | Ogomo Ogoma,Ogomo | Uganda, Eastern Region Kumi District > Kumi County > Nyero | populated place | N 1° 26′ 0'' | E 33° 50′ 0'' |
| 3025 | Ogili Ogili | Uganda, Northern Region Agago District > Agago County > Wol | mountain | N 3° 11′ 5'' | E 33° 16′ 54'' |
| 3026 | Ogangai Ogangai,Ogange | Uganda, Eastern Region Amuria District > Amuria County > Morungatuny | populated place | N 2° 11′ 0'' | E 33° 31′ 0'' |
| 3027 | Ofude Ofude | Uganda, Northern Region Maracha > Maracha County > Yivu | hill | N 3° 16′ 5'' | E 31° 1′ 5'' |
| 3028 | Ofo Ofo,Ofu | Uganda, Northern Region Koboko District > Koboko County > Dranya | hill | N 3° 22′ 0'' | E 30° 56′ 0'' |
| 3029 | Odwede Odwede | Uganda, Northern Region Adjumani District > East Moyo > Pakelle | hill elevation 1277m | N 3° 3′ 52'' | E 31° 54′ 40'' |
| 3030 | Odruwa Odruwa,Udruwa | Uganda, Northern Region Arua District > Terego County > Omugo | hill | N 3° 14′ 0'' | E 31° 3′ 0'' |
| 3031 | Odra Odra | Uganda, Northern Region Arua District > Terego County > Aii-Vu | hill | N 3° 12′ 56'' | E 31° 1′ 59'' |
| 3032 | Odoon Odon,Odoon | Uganda, Eastern Region Amuria District > Amuria County > Asamuk | populated place | N 1° 57′ 17'' | E 33° 43′ 58'' |
| 3033 | Odokay Odokay,Odokayi | Uganda, Eastern Region Serere District > Serere County > Atiira | populated place | N 1° 35′ 27'' | E 33° 32′ 2'' |
| 3034 | Odoit Odoit,Odoti | Uganda, Eastern Region Kaberamaido District > Kaberamaido County > Kaberamaido | populated place | N 1° 45′ 15'' | E 33° 7′ 28'' |
| 3035 | Oderai Odera,Oderai | Uganda, Eastern Region Katakwi District > Usuk > Usuk | populated place | N 2° 4′ 0'' | E 33° 57′ 0'' |
| 3036 | Odekere Adekere,Dekere,Odekere | Uganda, Eastern Region Kaberamaido District > Kaberamaido County > Ochero | populated locality | N 1° 37′ 42'' | E 32° 59′ 11'' |
| 3037 | Ochuloi Acholoi,Ochuloi | Uganda, Eastern Region Soroti District > Soroti > Katine | hill | N 1° 48′ 58'' | E 33° 30′ 21'' |
| 3038 | Ochebu Ochebu,Uchebu | Uganda, Northern Region Arua District > Madi-Okollo > Offaka | populated place | N 2° 41′ 19'' | E 31° 1′ 32'' |
| 3039 | Ochanga Kochang,Ochanga | Uganda, Eastern Region Kaberamaido District > Kalaki County > Otuboi | populated place | N 1° 52′ 13'' | E 33° 16′ 48'' |
| 3040 | Ochakai Ochakai,Ochoka | Uganda, Eastern Region Amuria District > Amuria County > Orungo | populated place | N 1° 56′ 20'' | E 33° 26′ 9'' |
| 3041 | Obyonyo Obyango,Obyonyo | Uganda, Eastern Region Amuria District > Amuria County > Akeriau | populated place | N 2° 3′ 0'' | E 33° 23′ 0'' |
| 3042 | Oburi Obure,Oburi | Uganda, Eastern Region Amuria District > Amuria County > Abarilela | populated place | N 2° 1′ 0'' | E 33° 48′ 0'' |
| 3043 | Obulubulu Kabulubulu,Obulubulu | Uganda, Eastern Region Kaberamaido District > Kaberamaido County > Kobulubulu | populated place | N 1° 43′ 8'' | E 33° 7′ 27'' |
| 3044 | Obalang Balinga,Obalang | Uganda, Eastern Region Amuria District > Kapelebyong > Obalanga | populated place | N 2° 10′ 22'' | E 33° 34′ 58'' |
| 3045 | Nzia Nzia,Nziya | Uganda, Western Region Kakumiro District > Bugangaizi > Nkooko | hill | N 0° 53′ 0'' | E 31° 26′ 0'' |
| 3046 | Nyiovura Nyio,Nyiovura | Uganda, Northern Region Arua District > Ayivu County > Adumi | populated place | N 3° 0′ 43'' | E 30° 49′ 54'' |
| 3047 | Nyio Nvio,Nyio | Uganda, Northern Region Arua District > Ayivu County > Adumi | populated place | N 3° 2′ 19'' | E 30° 50′ 1'' |
| 3048 | Nyero Nyero,Nyiro | Uganda, Eastern Region Ngora District > Ngora County > Ngora County | hill | N 1° 29′ 0'' | E 33° 50′ 0'' |
| 3049 | Nyero Nyero,Nyiro | Uganda, Eastern Region Kumi District > Kumi County > Nyero | populated place | N 1° 29′ 0'' | E 33° 51′ 0'' |
| 3050 | Nyeri Nyeri | Uganda, Northern Region Moyo District > West Moyo > Metu | mountain elevation 1403m | N 3° 47′ 33'' | E 31° 49′ 28'' |
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