Botswana
lowest point: junction of the Limpopo and Shashe Rivers 513
m
highest point: Tsodilo Hills 1,489 m

Bouvet Island
lowest point: South Atlantic Ocean 0 m
highest point: Olav Peak 935 m

Brazil
lowest point: Atlantic Ocean 0 m
highest point: Pico da Neblina 3,014 m

British Indian Ocean Territory
lowest point: Indian Ocean 0 m
highest point: unnamed location on Diego Garcia 15 m

British Virgin Islands
lowest point: Caribbean Sea 0 m
highest point: Mount Sage 521 m

Brunei
lowest point: South China Sea 0 m
highest point: Bukit Pagon 1,850 m

Bulgaria
lowest point: Black Sea 0 m
highest point: Musala 2,925 m

Burkina Faso
lowest point: Mouhoun (Black Volta) River 200 m
highest point: Tena Kourou 749 m

Burma
lowest point: Andaman Sea 0 m
highest point: Hkakabo Razi 5,881 m

Burundi
lowest point: Lake Tanganyika 772 m
highest point: Heha 2,670 m