| basic | alcalino |
| Basic Encoding Rules | BER |
| Basic English | Inglés básico |
| basic food requirement | necesidades alimenticias básicas |
| basic ideas | ideas básicas |
| Basic Income Earth Network | Renta básica universal |
| Basic Law for the Federal Republic of Germany | Ley Fundamental de Bonn |
| Basic Laws of Israel | Leyes fundamentales de Israel |
| Basic life support | Reanimación cardiopulmonar |
| Basic population | Población estadística |
| Basic rules | Base |
| basic skills | conocimientos básicos |
| Basic state | Estado fundamental |
| Basic taste | Gusto |
| Basic work | Suelo |
| Basica | BASICA |
| basically | fundamentalmente |
| basicity | carácter básico |
| basics | base |
| basidiomycete | basidiomiceto |
| Basidiomycota | Basidiomycota |
| basidium | basidio |
| basil | albahaca |
| Basil I | Basilio I |
| Basil II | Basilio II |
| Basil Liddell Hart | Basil Liddell Hart |
| Basil of Caesarea | Basilio el Grande |
| Basil Poledouris | Basil Poledouris |
| Basil Zaharoff | Basil Zaharoff |
| basilica | basílica |
| Basilica Cathedral of Our Lady of the Rosary | Basílica Catedral de Nuestra Señora del Rosario |
| Basilica Cistern | Cisterna de Basílica |
| Basilica della Santa Casa | Santuario de la Santa Casa |
| Basilica della Santissima Annunziata di Firenze | Santísima Anunciada |
| Basilica di Maria Ausiliatrice | Basílica de María Auxiliadora |
| Basilica di San Clemente | San Clemente |
| Basilica di San Miniato al Monte | San Miniato al Monte |
| Basilica di Santa Croce di Firenze | Basílica de Santa Cruz |
| Basilica di Santa Maria Gloriosa dei Frari | Santa María dei Frari |
| Basilica di Santa Maria Maggiore | Basílica de Santa María la Mayor |
| Basilica di Santa Maria Novella | Iglesia de Santa Maria Novella |
| Basilica Julia | Basílica Julia |
| Basilica of Maxentius | Basílica de Majencio |
| Basilica of Our Lady of Guadalupe | Santuario de Nuestra Señora de Guadalupe |
| Basilica of Our Lady of the Pillar | Basílica del Pilar |
| Basilica of Saint Paul Outside the Walls | Basílica de San Pablo Extramuros |
| Basilica of San Isidoro | Basílica de San Isidoro de León |
| Basilica of San Vitale | Iglesia de San Vital en Rávena |
| Basilica of Santa Maria Novella | Iglesia de Santa Maria Novella |
| Basilica of the National Shrine of Our Lady of Aparecida | Basílica de Nuestra Señora Aparecida |
| Basilica of the National Shrine of the Immaculate Conception | Basílica del Santuario Nacional de la Inmaculada Concepción |
| Basilica of the Vierzehnheiligen | Basílica de Vierzehnheiligen |
| Basilica Ulpia | Basílica Ulpia |
| Basilicata | Basilicata |
| Basilideans | Basilideanos |
| Basilides | Basílides |
| Basilique Saint-Denis | Basílica de Saint-Denis |
| Basiliscus | Basilisco |
| basilisk | basilisco |
| Basiliximab | Basiliximab |
| Basilosaurus | Basilosaurus |
| basin | tazón |
| basis | base |
| Basis function | Función base |
| Basis set | Base |
| bask | tomar sol |
| basket | canasta |
| Basket of Fruit | Cesto con frutas |
| Basket Swamp National Park | Parque Nacional Pantano de la Cesta |
| basketball | baloncesto |
| Basketball at the Summer Olympics | Baloncesto en los Juegos Olímpicos |
| Basketball Bundesliga | Basketball Bundesliga |
| basketball game | baloncesto |
| Basketball Hall of Fame | Basketball Hall of Fame |
| basketball hoop | aro de baloncesto |
| Basketball in Spain | Baloncesto en España |
| basketball player | baloncestista |
| Basketball position | Baloncesto |
| basketball shoe | zapatilla de baloncesto |
| basketful | cestada |
| basketry | cestería |
| Baskin-Robbins | Baskin Robbins |
| basking shark | tiburón peregrino |
| Basle | Basilea |
| Basler Messeturm | MesseTurm |
| Basmachi Revolt | Revuelta de Basmachi |
| Basmala | Basmala |
| Basmati | Basmati |
| basophil | basófilo |
| Basotho | Basuto |
| Basque | vasco |
| Basque Country | País Vasco |
| Basque Country autonomous football team | Selección de fútbol del País Vasco |
| Basque cuisine | Gastronomía vasca |
| Basque dance | Danzas vascas |
| Basque diaspora | Diáspora vasca |
| Basque mountains | Montes vascos |
| Basque mythology | Mitología vasca |
| Basque National Liberation Movement | Movimiento de Liberación Nacional Vasco |
| Basque nationalism | Nacionalismo vasco |
| Basque Nationalist Party | Partido Nacionalista Vasco |
| Basque rural sports | Deporte rural vasco |
| Basque Shepherd Dog | pastor vasco |
| Basque Wikipedia | Wikipedia en euskera |
| Basra | Basora |
| Basra Governorate | Basora |
| Basrah | Basora |
| bass | róbalo |
| Bass clarinet | Clarinete bajo |
| bass guitar | bajo |
| Bass oboe | Oboe bajo |
| Bass reflex | Recinto acústico reflector de bajos |
| Bass Rock | Bass Rock |
| Bass saxophone | Saxofón bajo |
| Bass Strait | Estrecho de Bass |
| Bass voice | Bajo |
| Bass-baritone | Barítono bajo |
| Bass-wood | Tilia |
| Bassae | Templo de Apolo |
| Bassas da India | Bassas da India |
| Basse-Normandie | Baja Normandía |
| Basse-Terre | Basse-Terre |
| Bassella | Basella |
| Basseterre | Basseterre |
| bassinet | cuna portátil |
| Bassins | Bassins |
| bassist | músico de bajo |
