| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
3801  | Buural Hayrhan Uul Buural Hayrhan Uul | Mongolia, Govi-Altai Province | mountain | N 45° 36′ 0'' | E 94° 46′ 0'' |
3802  | Büren Buran,Buren,Büran,Büren | Mongolia, Govi-Altai Province | populated place | N 47° 16′ 0'' | E 95° 56′ 0'' |
| 3803 | Bumbatïn Davaa Bumbatin Davaa,Bumbatïn Davaa,Peng-pu-t'ing-ta-fan,Peng-pu-t’ing-ta-fan | Mongolia, Hovd | pass | N 46° 39′ 0'' | E 91° 4′ 0'' |
| 3804 | Bülenii Hüryee Buleni Khure,Bulenii Huryee,Bülenii Hüryee | Mongolia, Arkhangai Province | populated place | N 47° 40′ 0'' | E 99° 3′ 0'' |
| 3805 | Bulag Uul Bulag Uul | Mongolia, Bayan-Ölgii Province | mountain | N 47° 43′ 0'' | E 90° 30′ 0'' |
| 3806 | Bulagiin Hüryee Bulagiin Huryee,Bulagiin Hüryee,Bulagin khure | Mongolia, Uvs Province | populated place | N 49° 34′ 0'' | E 94° 3′ 0'' |
| 3807 | Bulaganii Hiid Bulagani Khid,Bulaganii Hiid | Mongolia, Hovd | populated place | N 46° 36′ 0'' | E 91° 9′ 0'' |
| 3808 | Bulagan Hiid Bulagan Hiid,Bulagan Khid | Mongolia, Hovd | populated place | N 46° 36′ 0'' | E 91° 8′ 0'' |
| 3809 | Boro Üdzüüriin Subarga Boro Udzuuriin Subarga,Boro Utszyuriin Suburga,Boro Üdzüüriin Subarga | Mongolia, Govi-Altai Province | populated place | N 46° 10′ 0'' | E 95° 22′ 0'' |
| 3810 | Bor Öndör Bor Ondor,Bor Öndör | Mongolia, Dzabkhan | mountain | N 48° 35′ 0'' | E 95° 17′ 0'' |
3811  | Boljin Bulag Boldzin Bulak,Boljin Bulag,Bulzhun,Klyuch Bol'dzhin-bulak,Klyuch Bol’dzhin-bulak,Po-li-ch'in-pu-la-k... | Mongolia, Hovd | spring(s) | N 48° 25′ 0'' | E 91° 26′ 0'' |
| 3812 | Bogd Golïn Els Bogd Golin Els,Bogd Golïn Els | Mongolia, Dzabkhan | desert | N 47° 25′ 0'' | E 96° 25′ 0'' |
| 3813 | Bodohon Hötöl Dabaa Bodohon Hotol Dabaa,Bodohon Hötöl Dabaa,Pereval Bodkhon khutul' daba,Pereval Bodkhon khutul’ daba | Mongolia, Hovd | pass | N 46° 55′ 0'' | E 92° 24′ 0'' |
| 3814 | Bij-Altay Bij-Altai,Bij-Altay,Bij-Altaï | Mongolia, Govi-Altai Province | populated place | N 45° 33′ 0'' | E 93° 45′ 0'' |
| 3815 | Berhe Uul Berhe Uul | Mongolia, Dzabkhan | mountain | N 48° 27′ 0'' | E 95° 55′ 0'' |
| 3816 | Belchir Davaa Belchir Davaa,Pereval Beltsir | Mongolia, | pass | N 49° 31′ 0'' | E 89° 10′ 0'' |
| 3817 | Begeriyn Hotgor Begeriyn Hotgor | Mongolia, Govi-Altai Province | depression(s) | N 45° 50′ 0'' | E 97° 0′ 0'' |
| 3818 | Baytsaiin Hüryee Baytsaiin Huryee,Baytsaiin Hüryee,Baytsain Khure | Mongolia, Arkhangai Province | populated place | N 47° 50′ 0'' | E 98° 20′ 0'' |
| 3819 | Bayr Uul Bayr Uul | Mongolia, Uvs Province | mountain | N 49° 59′ 0'' | E 90° 28′ 0'' |
| 3820 | Bayan-Uul Bayan-Uul | Mongolia, Dzabkhan | mountain | N 49° 30′ 0'' | E 96° 16′ 0'' |
| 3821 | Bayan Uul Bayan Uul | Mongolia, Bayan-Ölgii Province | mountain | N 49° 8′ 0'' | E 88° 36′ 0'' |
| 3822 | Bayan Tsagaan Uul Bayan Tsagaan Uul | Mongolia, Hovd | mountains | N 47° 10′ 0'' | E 93° 43′ 0'' |
| 3823 | Bayan Tsagaan Uul Bayan Tsagaan Uul | Mongolia, Bayanhongor | mountain | N 45° 13′ 0'' | E 98° 50′ 0'' |
| 3824 | Bayan Ondor Ovoo Uul Bayan Ondor Ovoo Uul | Mongolia, Govi-Altai Province | mountain | N 45° 55′ 0'' | E 97° 25′ 0'' |
| 3825 | Bayan Oboonii Bayshing Bayan Oboonii Bayshing,Bayan oboni bayshing | Mongolia, Hovd | populated place | N 46° 42′ 0'' | E 93° 6′ 0'' |
| 3826 | Bayan Dzürihe Suma Bayan Dzurihe Suma,Bayan Dzürihe Suma,Bayan Tszurikhe Somon | Mongolia, Khövsgöl Province | populated place | N 50° 41′ 0'' | E 99° 15′ 0'' |
| 3827 | Bayan-Arik Uul Bayan-Arik Uul | Mongolia, Bayanhongor | mountain | N 45° 11′ 0'' | E 99° 17′ 0'' |
| 3828 | Baruun Don Uul Baruun Don Uul | Mongolia, | mountain | N 49° 29′ 0'' | E 95° 25′ 0'' |
| 3829 | Barlagiyn Gol Barlag Gol,Barlagiin Gol,Barlagiyn Gol,Barlygen-Gol,Pa-erh-lie-k'o Ho,Pa-erh-lie-k’o Ho | Mongolia, Hovd | stream | N 45° 24′ 0'' | E 92° 48′ 0'' |
| 3830 | Baba Uul Baba Uul | Mongolia, Uvs Province | mountain | N 49° 0′ 0'' | E 93° 40′ 0'' |
| 3831 | Ayagatayn Dugang Ayagatayn Dugang,Ayagtuin dugang | Mongolia, Khövsgöl Province | populated place | N 48° 50′ 0'' | E 99° 30′ 0'' |
| 3832 | Arshani-ih Uul Arshani-ih Uul | Mongolia, Bayan-Ölgii Province | mountain | N 48° 53′ 0'' | E 88° 16′ 0'' |
| 3833 | Argalant Uul Argalant Uul | Mongolia, Govi-Altai Province | mountain | N 47° 26′ 0'' | E 94° 40′ 0'' |
| 3834 | Arasay Gol A-lei-sai Ho,Arasai,Arasai Ho,Arasan gol,Arasay Gol,Arasayn Gol | Mongolia, Khövsgöl Province | stream | N 51° 21′ 0'' | E 99° 25′ 0'' |
| 3835 | Araiin Hüryee Araiin Huryee,Araiin Hüryee,Arain Khure | Mongolia, Khövsgöl Province | populated place | N 48° 24′ 0'' | E 99° 27′ 0'' |
| 3836 | Araiin Hüryee Araiin Huryee,Araiin Hüryee,Arain Khure | Mongolia, Govi-Altai Province | populated place | N 46° 51′ 0'' | E 95° 44′ 0'' |
| 3837 | Altay Altai,Altay,Altaï | Mongolia, Govi-Altai Province | populated place | N 44° 55′ 0'' | E 95° 25′ 0'' |
| 3838 | Altan Els Altan Els | Mongolia, Uvs Province | sand area | N 49° 50′ 0'' | E 95° 5′ 0'' |
| 3839 | Altan Altan,Erdenehayrhan,Erdenekhairkhan,Erdenekhaïrkhan | Mongolia, Dzabkhan | seat of a second-order administrative division | N 48° 7′ 0'' | E 95° 43′ 0'' |
| 3840 | Alhïn Gorgor Alhin Gorgor,Alhïn Gorgor | Mongolia, Khövsgöl Province | mountain | N 50° 53′ 0'' | E 99° 39′ 0'' |
| 3841 | Alag Hayrhan Uul Alag Hayrhan Uul | Mongolia, Govi-Altai Province | mountain | N 45° 35′ 0'' | E 94° 6′ 0'' |
| 3842 | Ak-korum Uul Ak-korum Uul | Mongolia, Bayan-Ölgii Province | mountain | N 48° 32′ 0'' | E 89° 42′ 0'' |
| 3843 | Akbash Aral Akbash Aral | Mongolia, Hovd | island | N 48° 13′ 0'' | E 92° 30′ 0'' |
| 3844 | Aj Bogd Uul Aj Bogd Uul | Mongolia, Govi-Altai Province | mountain | N 45° 0′ 0'' | E 94° 53′ 0'' |
| 3845 | Agita Hüryee Agita Huryee,Agita Hüryee,Agitu Khure | Mongolia, Dzabkhan | populated place | N 47° 30′ 0'' | E 96° 50′ 0'' |
| 3846 | Agarïn Gol Agaariin Gol,Agar Gol,Agariin gol,Agarin Gol,Agaryn Gol,Agarïn Gol,Reka Agari | Mongolia, Khövsgöl Province | stream | N 50° 10′ 0'' | E 98° 42′ 0'' |
| 3847 | Abdaliin Hüryee Abdaliin Huryee,Abdaliin Hüryee,Abdaliin khure | Mongolia, Dzabkhan | populated place | N 48° 59′ 0'' | E 98° 20′ 0'' |
3848  | Oyu Tolgoi  | Mongolia, Ömnögovĭ | mine(s) | N 43° 0′ 30'' | E 106° 50′ 35'' |
| 3849 | Ruslo Tsagan-Ergiyn-Gol Ruslo Cagan-Ehrgijn-Gol,Ruslo Tsagan-Ergiyn-Gol,Русло Цаган-Эргийн-Гол | Mongolia, East Gobi Aymag | dry stream bed | N 44° 47′ 45'' | E 110° 12′ 26'' |
| 3850 | Peski Urgeniy-Khyar Peski Urgeniy-Khjar,Peski Urgeniy-Khyar,Пески Ургениы-Хяр | Mongolia, East Gobi Aymag | sand area | N 44° 34′ 19'' | E 110° 12′ 27'' |
by