| Island’s Name | Island group(s) | Country/Countries |
|---|
|
| Bacelos | Alentejo Islands, Alentejo |  Portugal |
| Bacelos Pequena | Alentejo Islands, Alentejo | Portugal |
| Badgely | Georgian Bay,  Ontario |  Canada |
| Badger Island | Great Salt Lake,  Utah |  United States |
| Badger | Lake Winnipesaukee,  New Hampshire | United States |
| Baffin |  Nunavut | Canada |
| Bågø | Islands of the Little Belt |  Denmark |
| Bahrain Island | Persian Gulf |  Bahrain |
| Baillie-Hamilton | Nunavut | Canada |
| Bainbridge | Puget Sound,  Washington | United States |
| Baker | Allegheny River,  Pennsylvania | United States |
| Bald Eagle | Allegheny River, Pennsylvania | United States |
| Baleal | Estremadura islands | Portugal |
| Bali |
Lesser Sunda Islands |  Indonesia |
| Balta |  Shetland Islands |  Scotland |
| Baltrum | East Frisian Islands |  Germany |
| Baluan | Admiralty Islands |  Papua New Guinea |
| Bananec | Glénan islands |  France |
| Banfills | Mississippi River,  Minnesota | United States |
| Bangaram | Lakshadweep |  India |
| Banks |  Northwest Territories | Canada |
| Baranof | Alexander Archipelago,  Alaska | United States |
| Barbadoes | Schuylkill River, Pennsylvania | United States |
| Barbados | Caribbean Sea |  Barbados |
| Bardwell | Illinois River,  Illinois | United States |
| Barents Island | Svalbard |  Norway |
| Barentsøya | Svalbard | Norway |
| Barkis | Mississippi River, Illinois | United States |
| Barnes | San Juan Islands, Washington | United States |
| Barnston | Fraser River,  British Columbia | Canada |
| Barra | Outer Hebrides | Scotland |
| Barren |  Falkland Islands |  United Kingdom |
| Barren | North Channel, Ontario | Canada |
| Barreta | Algarve islands | Portugal |
| Barrie | North Channel, Ontario | Canada |
| Barrier | Georgian Bay, Ontario | Canada |
| Barro | Algarve islands | Portugal |
| Barsø | Islands of the Little Belt | Denmark |
| Barter | Arctic Sea, Alaska | United States |
| Bartlett |  Maine | United States |
| Basse-Terre | .svg.png) Guadeloupe, Lesser Antilles | France |
| Bassett | Lake Ontario, Ontario | Canada |
| Bassett | Lake Saint Clair, Ontario | Canada |
| Batanta | Raja Ampat Islands | Indonesia |
| Bateau | Georgian Bay, Ontario | Canada |
| Bateman |  Louisiana | United States |
| Bateman | Washington | United States |
| Bathurst | Queen Elizabeth Islands, Nunavut | Canada |
| Batture | North Channel, Ontario | Canada |
| Batz |  Brittany | France |
| Bazaruto | Bazaruto Archipelago |  Mozambique |
| Beacon | Houtman Abrolhos,  Western Australia |  Australia |
| Beacon | Playgreen Lake,  Manitoba | Canada |
| Beacon |  Newfoundland and Labrador | Canada |
| Beacon | Cumberland Sound, Nunavut | Canada |
| Beacon | Hudson Strait, Nunavut | Canada |
| Beacon | North Bay (Baffin Island), Nunavut | Canada |
| Beacon | Ungava Bay, Nunavut | Canada |
| Beacon | Kenora, Ontario | Canada |
| Beacon | Muskoka, Ontario | Canada |
| Beacon | Parry Sound, Ontario | Canada |
| Beacon | Peterborough, Ontario | Canada |
| Beacon | Renfrew, Ontario | Canada |
| Beacon | County of Frontenac, Ontario | Canada |
| Beacon (now subsided) |  North Carolina | United States |
| Beals | Maine | United States |
| Beament | Lake Huron, Ontario | Canada |
| Bear | Lake Temagami, Ontario | Canada |
| Bear | Lake Winnipesaukee, New Hampshire | United States |
| Bear | Suncook River, New Hampshire | United States |
| Bears Back | North Channel, Ontario | Canada |
| Bears Rump | Georgian Bay, Ontario | Canada |
| Beata | Pedernales |  Dominican Republic |
| Beauchene | Falkland Islands | United Kingdom |
| Beaupre | Cranberry Lake, Ontario | Canada |
| Beauregard | Barataria Bay, Louisiana | United States |
| Beaurivage | St. Lawrence River, Ontario | Canada |
| Beausoleil | Georgian Bay, Ontario | Canada |
| Beauty | North Channel, Ontario | Canada |
| Beaver | | Antarctica |
| Beaver | Falkland Islands | United Kingdom |
| Beaver | Mississippi River,  Iowa | United States |
| Beaver | North Channel, Ontario | Canada |
| Beaver | Beaver Island archipelago,  Michigan | United States |
| Beaver | Isle Royale, Michigan | United States |
| Beaver |  Massachusetts | United States |
| Beaver | Lake Winnipesaukee, New Hampshire | United States |
| Beaver | Rio Grande,  Tamaulipas |  Mexico |
| Beaverdam | Arkansas River,  Arkansas | United States |
| Beckwith | Georgian Bay, Ontario | Canada |
| Belene | Danube River |  Bulgaria |
| Bell Island | Newfoundland and Labrador | Canada |
| Belle Île | | France |
| Belle Isle | Louisiana | United States |
| Belleau | North Channel, Ontario | Canada |
| Bellinghausen | Windward Islands, Society Islands,  French Polynesia | Overseas Lands of France |
| Benbecula | Outer Hebrides | Scotland |
| Benguerra | Bazaruto Archipelago | Mozambique |
| Bennett | De Long Islands, Alaska | Claimed by the United States, controlled by  Russia |
| Bere | Bantry Bay |  Ireland |
| Bergmann | Mississippi River,  Wisconsin | United States |
| Berlenga Grande | Berlengas | Portugal |
| Bermuda |  The Bermuda Islands | United Kingdom |
| Big | Baffin Island, Nunavut | Canada |
| Big | Hudson Bay, Nunavut | Canada |
| Big | James Bay, Nunavut | Canada |
| Big | Lake Chemong, Ontario | Canada |
| Big | Lake Vernon, Ontario | Canada |
| Big | Pigeon Lake, Ontario | Canada |
| Big | Bay of Quinte, Ontario | Canada |
| Big | Skootamatta Lake, Ontario | Canada |
| Big | Lake of the Woods, Ontario | Canada |
| Big | Barataria Bay, Louisiana | United States |
| Big | (Disambiguation page) | Canada |
| Big | (Disambiguation page) | United States |
| Big Blue | Illinois River, Illinois | United States |
| Big Burnt | Georgian Bay, Ontario | Canada |
| Big Chicken | Lake Erie, Ontario | Canada |
| Bigga | Shetland Islands | Scotland |
| Bighorn | Lake Mead,  Nevada | United States |
| Bigsby | Lake of the Woods, Ontario | Canada |
| Bigwin | Lake Muskoka, Ontario | Canada |
| Bikar | Bikar Atoll, Ratak Chain |  Marshall Islands |
| Bikini | Bikini Atoll | Marshall Islands |
| Billingsgate | Cape Cod Bay, Massachusetts | United States |
| Bioko | Gulf of Guinea |  Equatorial Guinea |
| Birch | Lake Winnipesaukee, New Hampshire | United States |
| Birch Hill | Lake Winnipesaukee, New Hampshire | United States |
| Bird | Algoa Bay |  South Africa |
| Bird | Caribbean Sea | disputed by  Venezuela and  Dominica |
| Bird | Whitsunday Islands,  Queensland | Australia |
| Bird | North Queensland, Queensland | Australia |
| Bird | Seychelles |  Seychelles |
| Bird |  South Georgia | United Kingdom |
| Bird | Buzzards Bay, Massachusetts | United States |
| Bird | Fox Islands group of the Aleutian Islands, Alaska | United States |
| Bird | Lake Zway |  Ethiopia |
| Bird Island | Lesser Antilles |  Antigua and Barbuda |
| Birkholm | Islands of the waters south of Funen | Denmark |
| Björkö | Lake Mälaren |  Sweden |
| Biševo | Adriatic Sea |  Croatia |
| Bishop Rock | Isles of Scilly | United Kingdom |
| Bishop Island | Lesser Antilles | Antigua and Barbuda |
| Bitra | Lakshadweep | India |
| Bjørnø | Islands of the waters south of Funen | Denmark |
| Bjørnøya | Svalbard | Norway |
| Black | Lake Abitibi, Ontario | Canada |
| Black Fox | Allegheny River, Pennsylvania | United States |
| Black Prince | Louisiana | United States |
| Black Rock | | |
| Blake Island | Lesser Antilles | Antigua and Barbuda |
| Blakeley | Mobile Bay,  Alabama | United States |
| Blakely | San Juan Islands, Washington | United States |
| Blaker Towhead | Mississippi River,  Tennessee | United States |
| Blanchard | Mississippi River, Illinois | United States |
| Bleaker | Falkland Islands | United Kingdom |
| Bleanish | Lough Erne | Ireland |
| Blennerhassett | Ohio River,  West Virginia | United States |
| Blind | San Juan Islands, Washington | United States |
| Block | Atlantic Ocean,  Rhode Island | United States |
| Blueberry Island | Lake Wanapitei, Ontario | Canada |
| Boega | Minho islands | Portugal |
| Bogø | Baltic Sea | Denmark |
| Bogoslof Island | Bering Sea, Alaska | United States |
| Bois Blanc | Detroit River, Ontario | Canada |
| Bois Blanc | Lake Huron, Michigan | United States |
| Bokak Atoll | Ratak Chain | Marshall Islands |
| Bokissa | Pacific Ocean |  Vanuatu |
| Bolama | Bissagos Islands |  Guinea-Bissau |
| Bolivar |  Texas | United States |
| Bolter | Mississippi River, Illinois | United States |
| Bømlo | | Norway |
Bonaire  | Lesser Antilles |  Netherlands |
| Bonanza | Lake Wanapitei, Ontario | Canada |
| Bone | Georgian Bay, Ontario | Canada |
| Bonhomme | Missouri River,  Missouri | United States |
| Bonnet Carre | Mississippi River, Louisiana | United States |
| Bora Bora | Windward Islands, Society Islands, French Polynesia | Overseas Lands of France |
| Borden | Queen Elizabeth Islands, Nunavut | Canada |
| Borðoy |  Faroe Islands | Denmark |
| Borkum | East Frisian Islands | Germany |
| Borneo | Malay archipelago | Divided between Indonesia,  Malaysia, and  Brunei |
| Bornholm | Baltic Sea | Denmark |
| Borradaile | Balleny Islands | Ross Dependency,  New Zealand |
| Bourinot | North Channel, Ontario | Canada |
| Bouvetoya | South Atlantic Ocean | Norway |
| Bowen | Gulf Islands, British Columbia | Canada |
| Boyd | Holston River, Tennessee | United States |
| Bozcaada | Aegean Islands |  Turkey |
| Brač | Adriatic Sea | Croatia |
| Brandsø | Islands of the Little Belt | Denmark |
| Brännö | Southern Gothenburg Archipelago | Sweden |
| Brant | Mississippi River Delta, Louisiana | United States |
| Bray | Nunavut | Canada |
| Brecqhou | Brechou Channel Islands | Crown dependency |
| Breeze | Stoney Lake, Ontario | Canada |
| Breezy | Lake Winnipesaukee, New Hampshire | United States |
| Bréhat | | France |
| Bremangerlandet | | Norway |
| Bressay | Shetland Islands | Scotland |
| Bridgeman | South Shetland Islands | Claimed by Argentine Antarctica,  Argentina,
 Antártica Chilena Province of  Chile,
and the  British Antarctic Territory of the United Kingdom |
| Brijuni | Adriatic Sea | Croatia |
| Broadview | Gloucester Pool, Ontario | Canada |
| Brodeur | Lake Superior, Ontario | Canada |
| Brother | Niagara River,  New York | United States |
| Brother | Shetland Islands | Scotland |
| Browns Island | Great Salt Lake, Utah | United States |
| Brown | San Juan Islands, Washington | United States |
| Browning | Lake Muskoka, Ontario | Canada |
| Browns | Louisiana | United States |
| Browns | West Virginia | United States |
| Brownsea | Poole Harbour, Dorset,  England |
United Kingdom |
| Brownscombe | Stoney Lake, Ontario | Canada |
| Brunec | Glénan islands | France |
| Brunot | Ohio River, Pennsylvania | United States |
| Bruny |  Tasmania | Australia |
| Bruray | Outer Skerries, Shetland Islands | Scotland |
| Brush | Timbalier Bay, Louisiana | United States |
| Bryher | Isles of Scilly | United Kingdom |
| Bu Sadah | Hawar Islands | Bahrain |
| Bu Tammur | Hawar Islands | Bahrain |
| Bubaque | Bissagos Islands | Guinea-Bissau |
| Bubiyan | Persian Gulf |  Kuwait |
| Buchhorst | Trave river | Germany |
| Buck |  U.S. Virgin Islands | United States |
| Buckle | Balleny Islands | Ross Dependency, New Zealand |
| Buckley | West Virginia | United States |
| Buffington | West Virginia | United States |
| Bugio | Estremadura islands | Portugal |
| Bugio |  Madeira | Portugal |
| Buláti-sziget | Tisza |  Hungary |
| Buldir | Aleutian Islands, Alaska | United States |
| Bull | Dublin Bay | Ireland |
| Bull | Atlantic Ocean,  South Carolina | United States |
| Bulla | Caspian Sea |  Azerbaijan |
| Bunce | Sierra Leone River |  Sierra Leone |
| Buneh | Persian Gulf | Claimed by Iran |
| Buøy | Island in Øyane archipelago, Stavanger municipality, Rogaland | Norway |
| Burano | Venetian Lagoon |  Italy |
| Burgazada | Prince's Islands | Turkey |
| Burhou | Channel Islands |  Guernsey |
| Burke Island | Lake Huron, Ontario | Canada |
| Burlington | Mississippi River, Illinois | United States |
| Burlington | Delaware River,  New Jersey | United States |
| Burns | Tennessee River, Tennessee | United States |
| Burnt | Lake Nipissing, Ontario | Canada |
| Burnt | Windy Lake, Ontario | Canada |
| Burra | Shetland Islands | Scotland |
| Burray |  Orkney Islands | Scotland |
| Burrit | Lake Nipissing, Ontario | Canada |
| Burton | Lake Champlain,  Vermont | United States |
| Bushes | Platte River,  Nebraska | United States |
| Bussell | Tennessee River, Tennessee | United States |
| Bustard | Georgian Bay, Ontario | Canada |
| Butler | Lake Champlain, Vermont | United States |
| Büyükada | Princes' Islands | Turkey |
| Buzzard | Mississippi River, Illinois | United States |
| Byan Martin | Nunavut | Canada |
| Bylot | Nunavut | Canada |
|