- B ... Baalim
- Baalot ... Babesia bigemina
- Babesia divergens ... Babylon
- Babylon ... Bachelor of Technology
- Bachelor Party ... backarc basin
- backbiting ... bacteriophage
- bacteriorhodopsin ... Bade
- BADEA ... Baegun
- Baekeland, Leo ... Bagirmi, Kingdom of
- Bagiunis ... Bahinābāī, Bahini
- Bahinemo ... Baikal Rift Zone
- Baikal sculpin ... Bainbridge
- Bainbridge Cup ... Bakante bilder
- Bakare, Ayinde ... Bakheng
- Bakhit, Marouf al- ... Balaghat
- Balaghat Range ... Balchin, Nigel Marlin
- BALCO ... Baldy Mountain
- Baldy Mountain ... Balkan League
- Balkan Mountains ... Ballard, Robert
- Ballard, Robert Duane ... ballroom dance
- Ballroom Marfa ... Baltic Shield
- Baltic states ... Bambatha
- Bamberg ... Banbury
- Banbury mixer ... banded stilt
- banded tenrec ... Bang the Drum Slowly
- Bang’s bacillus ... banjo clock
- banjo shark ... banner
- banner ... banyan
- banyan fig ... bar magnet
- bar mitzva ... Barash, Asher
- barasingha ... barbelthroat carpet shark
- barber ... Barca, Hamilcar
- Barca, Pedro Calderón de la ... Barefoot in the Park
- Barefooted Trinitarians ... barium
- Barium ... Barmen Confession of Faith
- Barmen Declaration ... Barnstable, Town of
- Barnstaple ... Barra
- Barra do Rio Negro ... Barrett, Janie Porter
- Barrett, Kate Harwood Waller ... Barry, Philip
- Barry, Phillips ... Bartlett, Caroline Julia
- Bartlett, Frederic ... Barzaz Breiz
- barzish ... baseball mitt
- baseball park ... basic oxygen process
- Basic Principles of Classical Ballet ... Basingstoke and Deane
- basir ... Bass, Sam
- Bass, Saul ... Bastille
- Bastille Day ... Bătdâmbâng
- Bate, W. Jackson ... Bathurst of Bathurst, Henry Bathurst, 3rd Earl, Baron Bathurst of Battlesden, Lord Apsley, Baron of Apsley
- Bathurst of Battlesden, Allen Bathurst, Baron ... Battānī, al-
- batte din ... Battle, Kathleen
- Battle, Kathleen Deanne ... Bauhaus 1919–1933: Workshops for Modernity
- Bauhin’s valve ... bay
- bay ... Bayeux Tapestry
- Bayezid Adlî ... bazooka
- Bazoum, Mohamed ... Beach, Alfred Ely
- Beach, Amy Marcy ... Beany and Cecil
- bear ... Beat movement
- Beat Takeshi ... Beaufort Series
- Beaufort Wind Force Scale ... Beauvoir
- Beauvoir, Simone de ... Beck, Max Wladimir, Freiherr von
- Beck, Vilhelm ... Bede, Adam
- bedeguar gall ... Beecham, Sir Thomas, 2nd Baronet
- Beechcraft ... Before Dawn
- Before I Go ... behavioural science
- behaviourism ... Being Charlie
- Being Flynn ... bel canto
- bel fruit ... Belgian Congo dog
- Belgian horse ... Bell Jet Ranger
- bell krater ... Bellanca, Giuseppe Mario
- Bellarmine ... Belloc, Joseph-Hilaire-Pierre-René
- Belloc, Marie Adelaide ... Belotto, Canaletto
- Belouga ... Bembé, Carl August
- Bemberg rayon ... Benci, Piero di Jacopo d’Antonio
- Benckendorff, Aleksandr Khristoforovich, Count ... Benedict, Ruth
- Benedict, St. ... Bengali
- Bengali alphabet ... Benkoelen
- Benlliure, Mariano ... Benson, Edward Frederic
- Benson, Edward White ... benzenethiol
- benzenoid aromatic compound ... Bercy
- Berczenko, Israel ... Bergdama
- Berge, Meere und Giganten ... Bering Sea Dispute
- Bering Strait ... Berlinale
- Berliner Ensemble ... Bernard-Soulier syndrome
- Bernardin de Saint-Pierre, Jacques-Henri ... Bernstorff, J. H. E., Graf von
- Bernstorff, Johann Hartwig Ernst, Count von ... Berthoud, Ferdinand
- Berthoud, Pierre-Louis ... Bessa-Luís, Agustina
- Bessarabia ... Bet Sheʾan
- Bet Sheʾan, Tel ... Bethanie
- Bethanien ... Better Sort, The
- Better Than Sex ... Beveridge, William Henry Beveridge, 1st Baron
- Beverley ... Bezwada
- Beʾer Shevaʿ ... Bharatiya Janata Yuva Morcha
- Bharatpur ... Bhopal Agency
- Bhopal disaster ... Bianzhou
- Bianzong lun ... Bibliothèque Nationale de France
- Bibliothèque Royale Albert I ... Bīdrī ware
- Bidwell Mansion State Historic Park ... Big Black River
- Big Black River, Battle of ... Big Red Machine
- Big Red One, The ... Bignone, Reynaldo
- bignonia family ... Bilder aus der deutschen Vergangenheit
- Bilder der Welt und Inschrift des Krieges ... Billington, James Hadley
- Billion Dollar Babies ... binaural beat
- binaural effect ... Binyon, Laurence
- Binyon, Robert Laurence ... Bioi parallēloi
- Bioi sophistōn ... biopyribole
- bioremediation ... Bird Box
- bird carpet ... Birkbeck College
- Birkbeck, George ... Bīrūnī, al-
- biryani ... Bislett Games
- Bismarck ... Bitonto
- bittacle ... Björling, Gunnar
- Björling, Johan Jonaton ... black carp
- black cat ... Black Hawk War
- Black Hebrew Israelites ... black oak
- Black Obelisk ... Black Ship to Hell
- Black Ships, The ... Black, Winifred Sweet
- black-and-tan setter ... Blackburn, Joseph
- Blackburn, Marsha ... Blackwell’s Island
- Blackwell, Alice Stone ... Blair, Mary
- Blair, Montgomery ... Blanda, George
- Blanda, George Frederick ... Blatch, Harriot Eaton Stanton
- Blatch, Nora Stanton ... blepharitis
- blepharoplast ... Bliss
- Bliss ... block structure
- block system ... blood cell
- blood cell formation ... Bloom
- bloom ... Bloy, Léon
- BLP ... blue ling
- blue lotus ... blue-black glacier bear
- blue-breasted waxbill ... Blume in Love
- Blume, Claire ... Bo Juyi
- Bo Mountain ... bobby
- Bobby Deerfield ... Bode, Johann Elert
- Bode, Wilhelm von ... Body Shop International PLC, The
- body size ... Boeton
- Boettcher, cells of ... Bogues, Tyrone
- Bogurodzica ... Boileau, Nicolas
- Boileau-Despréaux, Nicolas ... bokuseki
- Bol, Ferdinand ... bolívar
- bolivar ... Bolsover, Thomas
- bolt ... Bomber Harris
- Bomber Mafia: A Dream, a Temptation, and the Longest Night of the Second World War, The ... Bonard, Louis-Adolphe
- Bonasa umbellus ... Bone on Bone
- Bone People, The ... Bonnat, Léon-Joseph-Florentin
- Bonnburg ... book catalog
- Book Cliffs ... Book of the Dead
- Book of the Dean of Lismore, The ... Boone, Richard
- Boonesboro ... Borassus flabellifer
- Borat ... Boré, Jean Étienne
- Boreal Climatic Interval ... Boris Vasilyevich
- Borisoglebsk ... Boroviči
- borovička ... Boschniakia rossica
- Bosco, Don ... Bossypants
- Bostock v. Clayton County ... Boswellia sacra
- Boswellia serrata ... Botswana
- Botswana Democratic Party ... Bouchet, Jean
- Bouchon, Basile ... Boulogne, Joan of
- Boulogne-sur-mer ... Bourbon, Louis-Auguste de
- Bourbon, Pierre I, 2e duc de ... Bout, Viktor
- Bouteflika, Abdelaziz ... Bowen, Elizabeth Dorothea Cole
- Bowen, I. S. ... box caisson
- box cooker ... Boyce, Joseph
- Boyce, William ... bozkashī
- Bozorgmehr ... Brachyteles hypoxanthus
- brachytherapy ... Bradshaw-Isherwood, Christopher William
- Bradstreet, Anne ... Brahmagupta
- Brahmah, Joseph ... braking radiation
- Brakpan ... Branden, Barbara
- Branden, Nathan ... Brasco, Donnie
- Brasenia schreberi ... Braun, Alexander Carl Heinrich
- Braun, E. Lucy ... Brazilian literature
- Brazilian pawpaw ... Breakfast-Table
- breaking ... breeding blanket
- Breedlove v. Suttles ... Brentano, Clemens
- Brentano, Franz ... breve
- brevet ... Brickman, Marshall
- Brickton ... Bridges-Hall, Ruby
- Bridget Jones’s Baby ... Brighella
- Brighid ... brine solution mining
- Brinell hardness test ... Bristol, University of
- Bristol-Myers Squibb Company ... British Guiana
- British Health and Morals of Apprentices Act ... Brittan, Sir Leon
- Brittany ... Broadus, Cordozar Calvin, Jr.
- Broadway ... Broglie, Victor-François, 2e duc de
- broiler ... Brongniart, Adolphe-Théodore
- Brongniart, Alexandre ... Brookes, Norman
- Brookes, William Penny ... Broseley Blue Dragon pattern
- Brosimum alicastrum ... brown algae
- brown American star-footed amanita ... Brown, Clifford
- Brown, Clyde Jackson ... Brown, Trisha
- Brown, Walter A. ... Bruce, Blanche K.
- Bruce, Blanche Kelso ... Bruguière, Jean-Louis
- Bruheim, Jan-Magnus ... Brünn
- Brunn response ... Brut
- Brut ... bryozoan
- Bryson, Peabo ... Buber, Martin
- Buber, Solomon ... Buchholz, Horst
- Buchinsky, Charles Dennis ... buckminsterfullerene
- Bucknell University ... Budenny, Semyon Mikhaylovich
- Buderim ... Buffalo Springfield
- buffalo treehopper ... Buick, David Dunbar
- Buick-Berle Show, The ... bulbul
- bulbus aortae ... bull shark
- bull shark ... Bülow, Cosima von
- Bülow, Hans Guido, Freiherr von ... Bundy, Theodore Robert
- Bune River ... Buonaparte, Napoleone
- Buonaparte, Roland ... Bureau Interparlementaire
- Bureau of International des Expositions ... Burgundionum, Lex
- Burgundy ... Burlatsky, F. M.
- Burlatsky, Fyodor ... Burnham of Hall Barn, Beaconsfield, Edward Levy-Lawson, 1st Baron
- Burnham Plan ... Burramyidae
- Burrard Inlet ... Burundi, République du
- Burunduk Khan ... Bush, Catherine
- Bush, George H. W. ... Busiris
- Busk festival ... Buteo platypterus
- Buteo regalis ... butter-and-eggs
- buttercup ... butyrophenone
- butyryl-S-ACP ... By the Time I Get to Phoenix
- By, John ... Byrranga Mountains
- Byrrhidae ... BZÖ