| barren | aburrido |
| Barren Strawberry | Potentilla sterilis |
| barrenness | sequía |
| Barrens | Landas |
| Barretina | Barretina |
| barrette | prendedor |
| Barri Gòtic | Barrio Gótico de Barcelona |
| barricade | obstruir |
| barrier | límite |
| barrier beach | cordón litoral |
| barrier reef | arrecife de coral |
| Barriers to entry | Barreras de entrada |
| barring | excepto |
| Barrington Tops National Park | Parque Nacional Picos Barrington |
| Barrio Fino | Barrio Fino |
| barrister | legalista |
| Barro Colorado | Barro Colorado |
| Barro Colorado Island | Barro Colorado |
| Barron River | Barron |
| barroom | bar |
| Barroso Commission | Comisión Barroso |
| Barroui | Salisbury |
| barrow | puerco |
| Barrow-downs | Quebradas de los Túmulos |
| Barry | Barry |
| Barry Boehm | Barry Boehm |
| Barry Bonds | Barry Bonds |
| Barry Levinson | Barry Levinson |
| Barry Lyndon | Barry Lyndon |
| Barry Manilow | Barry Manilow |
| Barry Nelson | Barry Nelson |
| Barsine | Barsine |
| 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 |
| bartender | camarero |
| barter | permuta |
| Barthezz | Barthezz |
| Barthold Georg Niebuhr | Barthold Georg Niebuhr |
| Bartholomew | Bartolomé |
| Bartholomew Roberts | Bartholomew Roberts |
| Bartholomew the Apostle | Bartolomé el Apóstol |
| Barthélemy Charles Joseph Dumortier | Barthélemy Charles Joseph Dumortier |
| Bartimaeus | Bartimeo |
| Barting Over | Barting Over |
| Bartolomeo Ammanati | Bartolomeo Ammannati |
| Bartolomeo Carducci | Bartolomeo Carduccio |
| Bartolomeo Colleoni | Bartolomeo Colleoni |
| Bartolomeo Cristofori | Bartolomeo Cristofori |
| Bartolomeo Manfredi | Bartolomeo Manfredi |
| Bartolomeo Passarotti | Bartolomeo Passerotti |
| Bartolomeu de Gusmão | Bartolomeu Lourenço de Gusmão |
| Bartolomeu Dias | Bartolomé Díaz |
| Bartolomew | Bartolomé el Apóstol |
| Bartolommeo Bandinelli | Baccio Bandinelli |
| Bartolomé Blanche | Bartolomé Blanche |
| Bartolomé de las Casas | Bartolomé de las Casas |
| Bartolomé Esteban Murillo | Bartolomé Esteban Murillo |
| Bartolomé Mitre | Bartolomé Mitre |
| Bartolus de Saxoferrato | Bartolo de Sassoferrato |
| Barton Fink | Barton Fink |
| Bartonella | Bartonelosis |
| BartPE | BartPE |
| Bartın Province | Provincia de Bartin |
| Baruch ben Neriah | Libro de Baruc |
| Baruch Samuel Blumberg | Baruch Samuel Blumberg |
| Baruch Spinoza | Baruch Spinoza |
| Baruj Benacerraf | Baruj Benacerraf |
| Baruta Municipality | Municipio Baruta |
| Barx | Bárig |
| Barxeta | Barcheta |
| Barye | Baria |
| baryon | barión |
| Baryon star | Estrella bariónica |
| baryonic | bariónico |
| Baryonic dark matter | Materia oscura bariónica |
| Baryonyx | Baryonyx |
| Barzan Ibrahim al-Tikriti | Barzan Ibrahim al-Tikriti |
| bas relief | bajorrelieve |
| Bas-Congo | Bajo Congo |
| Bas-Intyamon | Bas-Intyamon |
| bas-relief | bajorrelieve |
| Bas-Rhin | Departamendo del Bajo Rin |
| Bas-Saint-Laurent | Bas-Saint-Laurent |
| Bas-Sassandra | Bas-Sassandra |
| Bas-Uele Province | Bajo Uele |
| Basaburua | Basaburúa Mayor |
| Basal body temperature | Temperatura basal |
| basal ganglion | ganglio basal |
| basal layer | capa basal |
| basalt | basalto |
| basaltic | basáltico |
| Basarab I of Wallachia | Basarab I de Valaquia |
| Basañez | Club Atlético Basáñez |
| bascule bridge | puente basculante |
| base | vil |
| Base and superstructure | Infraestructura y superestructura |
| BASE jumping | salto BASE |
| base line | línea de juego |
| base material | materia prima |
