| barrio bajo | slum |
| barrio chino | Chinatown |
| barrio de chabolas | slum |
| Barrio de la Alfama de Lisboa | Alfama |
| Barrio de la Ribera | La Ribera |
| barrio de mala fama | red-light district |
| Barrio Fino | Barrio Fino |
| Barrio gay | Gay village |
| Barrio Gótico de Barcelona | Barri Gòtic |
| Barrio Latino de París | Latin Quarter |
| barrio marginal | slum |
| barrio periférico | slum |
| barrio pobre | slum |
| barrio residencial | residential area |
| Barrio rojo de Ámsterdam | De Wallen |
| Barrio Sésamo | Sesame Street |
| Barrios de la Ciudad de Buenos Aires | Neighbourhoods and Communes of Buenos Aires |
| Barrios de Los Ángeles | List of districts and neighborhoods of Los Angeles |
| barrios lejanos | boondock |
| Barrister | Barrister |
| barrita astringente | styptic pencil |
| barritar | trumpet |
| barro | clay |
| barro activo | digested sludge |
| Barro Colorado | Barro Colorado Island |
| barro deshidratado | dehydrated sludge |
| barro industrial | industrial sludge |
| barro residual de residuos | residual waste sludge |
| barroca | Baroque |
| barroco | baroque |
| Barroco inglés | English Baroque |
| Barroco siciliano | Sicilian Baroque |
| Barron | Barron River |
| barroso | loamy |
| Barry Boehm | Barry Boehm |
| Barry Bonds | Barry Bonds |
| Barry Levinson | Barry Levinson |
| Barry Lyndon | Barry Lyndon |
| Barry Manilow | Barry Manilow |
| Barry Marshall | Barry Marshall |
| Barry Nelson | Barry Nelson |
| barrón | marram grass |
| Barsine | Barsine |
| Barsine-Estatira | Stateira II |
| Barsoom | Barsoom |
| Bart Berman | Bart Berman |
| Bart Gets an Elephant | Bart Gets an Elephant |
| Bart Gets An F | Bart Gets an F |
| Bart Gets Famous | Bart Gets Famous |
| Bart Gets Hit By A Car | Bart Gets Hit by a Car |
| Bart of Darkness | Bart of Darkness |
| Bart Sells His Soul | Bart Sells His Soul |
| Bart Simpson | Bart Simpson |
| Bart Simpson Comics | Bart Simpson comics |
| Bart the General | Bart the General |
| Bart the Genius | Bart the Genius |
| Bart the Mother | Bart the Mother |
| Bart the Murderer | Bart the Murderer |
| Bart-Mangled Banner | Bart-Mangled Banner |
| Barthezz | Barthezz |
| Barthold Georg Niebuhr | Barthold Georg Niebuhr |
| Bartholomew Roberts | Bartholomew Roberts |
| Barthélemy Charles Joseph Dumortier | Barthélemy Charles Joseph Dumortier |
| Bartimeo | Bartimaeus |
| Barting Over | Barting Over |
| Bartolo de Sassoferrato | Bartolus de Saxoferrato |
| Bartolomeo | Bartholomew |
| Bartolomeo Ammannati | Bartolomeo Ammanati |
| Bartolomeo Carduccio | Bartolomeo Carducci |
| Bartolomeo Colleoni | Bartolomeo Colleoni |
| Bartolomeo Cristofori | Bartolomeo Cristofori |
| Bartolomeo Manfredi | Bartolomeo Manfredi |
| Bartolomeo Passerotti | Bartolomeo Passarotti |
| Bartolomeo Vanzetti | Sacco and Vanzetti |
| Bartolomeu Lourenço de Gusmão | Bartolomeu de Gusmão |
| Bartolomé | Bartholomew |
| Bartolomé Blanche | Bartolomé Blanche |
| Bartolomé de las Casas | Bartolomé de las Casas |
| Bartolomé Díaz | Bartolomeu Dias |
| Bartolomé el Apóstol | Bartholomew |
| Bartolomé Esteban Murillo | Bartolomé Esteban Murillo |
| Bartolomé Mitre | Bartolomé Mitre |
| Barton Fink | Barton Fink |
| Bartonelosis | Bartonella |
| BartPE | BartPE |
| Baruch Samuel Blumberg | Baruch Samuel Blumberg |
| Baruch Spinoza | Baruch Spinoza |
| Baruj Benacerraf | Baruj Benacerraf |
| barullo | row |
| Baryonyx | Baryonyx |
| Barzan Ibrahim al-Tikriti | Barzan Ibrahim al-Tikriti |
| Baréin | Bahrain |
| barítono | baritone |
| Barítono bajo | Bass-baritone |
| barómetro | barometer |
