| blender | blender |
| Blenheim Palace | Blenheim Palace |
| Blenio | Blenio |
| Bleomycyna | Bleomycin |
| Blera | Blera |
| Blessagno | Blessagno |
| Bleve | BLEVE |
| Bleymard | Le Bleymard |
| blichtr | glamour |
| Blikanazaur | Blikanasaurus |
| Blind Guardian | Blind Guardian |
| Blind Lemon Jefferson | Blind Lemon Jefferson |
| Blindheim | Blindheim |
| bliny | blini |
| Bliska zagranica | Near abroad |
| bliski | close |
| Bliski Wschód | Middle East |
| Bliskie spotkania trzeciego stopnia | Close Encounters of the Third Kind |
| blisko | near |
| bliskoznaczny | synonymous |
| bliskość | proximity |
| Bliss | Blissymbol |
| Blitz Basic | Blitz BASIC |
| Blitzingen | Blitzingen |
| Blitzkrieg | Blitzkrieg |
| Blixa Bargeld | Blixa Bargeld |
| blizna | scar |
| blizniak | twin |
| Bliźniaczki Greenbush | Lindsay and Sidney Greenbush |
| Bliźniaczki Olsen | Mary-Kate and Ashley Olsen |
| bliźniak | twin |
| Bliźniaki Cramp | The Cramp Twins |
| Bliźnięta | Gemini |
| bliźnięta syjamskie | Siamese twins |
| Bloatware | Software bloat |
| Blob | Binary large object |
| Bloc Party | Bloc Party |
| Blodeuwedd | Blodeuwedd |
| Bloemfontein | Bloemfontein |
| Bloemfontein Celtic | Bloemfontein Celtic |
| blog | weblog |
| bloger | blogger |
| blogers | blogger |
| blogger | blogger |
| blogosfera | blogosphere |
| Blogroll | List of blogging terms |
| Blois | Blois |
| blok | pad |
| Blok f | F-block |
| Blok Julii Tymoszenko | Yulia Tymoshenko Bloc |
| Blok Lewicy | Left Bloc |
| blok mieszkalny | apartment building |
| Blok operacyjny | Operating theatre suite |
| Blok p | P-block |
| Blok Quebecu | Bloc Québécois |
| Blok s | S-block |
| blok wschodni | Eastern Bloc |
| Blok złożony | Pulley |
| blokada | blockade |
| Blokada Berlina | Berlin Blockade |
| Blokada kontynentalna | Continental System |
| Blokada Leningradu | Siege of Leningrad |
| blokhauz | blockhouse |
| Blonay | Blonay |
| blond | blond |
| blondyn | blond |
| blondynka | blonde |
| Bloo | Bloo |
| Blood-Rooted | Blood Rooted |
| Bloodhound Gang | Bloodhound Gang |
| Blooming Santa Cruz | Club Blooming |
| Bloomsbury | Bloomsbury Publishing |
| Bloomsbury Group | Bloomsbury Group |
| Blow Up Your Video | Blow Up Your Video |
| blołdżob | blowjob |
| Blu-ray | Blu-ray Disc |
| Blu-ray Disc Association | Blu-ray Disc Association |
| Bludenz | Bludenz |
| Blue | Blue |
| Blue Angels | Blue Angels |
| Blue Byte Software | Blue Byte Software |
| Blue Gene | Blue Gene |
| Blue Lake | Blue Lake |
| Blue Mountains | Blue Mountains |
| Blue Steel | Blue Steel missile |
| Blue Stilton | Stilton |
| Blue Velvet | Blue Velvet |
| Blue Öyster Cult | Blue Öyster Cult |
| Blues | Blues |
| Blues Brothers | The Blues Brothers |
| Blues brytyjski | British blues |
| Blues chicagowski | Chicago blues |
| Blues Delty | Delta blues |
| Blues fortepianowy | Piano blues |
| Blues rock | Blues-rock |
| Blues teksański | Texas blues |
| Bluescreen | Bluescreen |
| Bluetooth | Bluetooth |
| Bluffmaster | Bluffmaster |
| Blum Blum Shub | Blum Blum Shub |
| Bluma Zeigarnik | Bluma Zeigarnik |
| Blumberg | Bloomberg |
| Blusa | Shirt blouse |
| bluszcz | ivy |
| Bluszczyk | Glechoma |
| Bluszczyk kurdybanek | Glechoma hederacea |
| Blutengel | Blutengel |
| bluza | smock |
| bluzka | blouse |
| bluźnierca | blasphemer |
| bluźnierstwo | blasphemy |
| Bláa Lónið | Blue Lagoon |
| Blâmont | Blâmont |
| Blériot XI | Blériot XI |
| Blücher | German cruiser Blücher |
| BM Ciudad Real | BM Ciudad Real |
| BMG | BMG |
| BMI | Body mass index |
| BMI British Midland | BMI |
| BMP | BMP file format |
| BMW | BMW |
| BMW Isetta | Isetta |
| BMW Open | Munich Open |
| BMW Sauber | BMW Sauber |
| BMX | BMX |
| BNC | BNC connector |
| Bnei Brak | Bnei Brak |
| Bnej Izrael | Bene Israel |
| BNN | BNN |
| BNP Paribas Masters | Paris Masters |
| bo | because |
| Bo Diddley | Bo Diddley |
| Bo Johansson | Bo Johansson |
| boa | boa |
| Boa leśny | Amazon tree boa |
| Boa psiogłowy | Emerald tree boa |
| Boa tęczowy | Rainbow boa |
| Boaco | Boaco |
| Board of Longitude | Board of Longitude |
| Bob Beamon | Bob Beamon |
| Bob Budowniczy | Bob the Builder |
| Bob Clarke Trophy | Bob Clarke Trophy |
| Bob Cousy | Bob Cousy |
| Bob Denard | Bob Denard |
| Bob Dylan | Bob Dylan |
| Bob Ezrin | Bob Ezrin |
| Bob Falkenburg | Bob Falkenburg |
| Bob Geldof | Bob Geldof |
| Bob Hawke | Bob Hawke |
| Bob Hayes | Bob Hayes |
| Bob Hope | Bob Hope |
| Bob Kahn | Bob Kahn |
| Bob Lazar | Bob Lazar |
| Bob Marley | Bob Marley |
| Bob Mathias | Bob Mathias |
| Bob Pettit | Bob Pettit |
| Bob Richards | Bob Richards |
| Bob Riley | Bob Riley |
| Bob Seger | Bob Seger |
| Bob Sinclar | Bob Sinclar |
| Bob Tisdall | Bob Tisdall |
| Boba Fett | Boba Fett |
| Bobak | Bobak Marmot |
