| Blågrøn Rose | Rosa dumalis |
| blågrønalger | blue-green alga |
| Blåhale | Purple Hairstreak |
| blåhals | bluethroat |
| Blåhval | Blue Whale |
| blåmejse | blue tit |
| Blåmunke | Jasione |
| blåmusling | blue mussel |
| Blånelse | Optical brightener |
| Blåringet blæksprutte | Blue-ringed octopus |
| blåskimmelost | blue cheese |
| Blåsyre | Hydrogen cyanide |
| blåt øje | black eye |
| Blåtop-slægten | Molinia |
| Blåvandshuk Kommune | Blåvandshuk |
| blåøjet | blue-eyed |
| blæk | ink |
| blæksprutte | octopus |
| blæksprutter | cephalopod |
| blænde | dazzle |
| blære | bladder |
| Blærehalskirtel | Prostate |
| Blærenød-familien | Staphyleaceae |
| Blærerod-familien | Lentibulariaceae |
| blærerøv | show-off |
| Blæresmælde | Silene vulgaris |
| Blærespiræa | Physocarpus |
| Blæseinstrument | Wind instrument |
| Blæsende | Ventôse |
| Blæserkvintet | Wind quintet |
| Blød Akantus | Acanthus mollis |
| blød porno | softcore pornography |
| bløddyr | mollusc |
| bløde | bleed |
| blødgøres | soften |
| Blødvinger | Soldier beetle |
| Blücher | German cruiser Blücher |
| Bmi | BMI |
| BMW | BMW |
| BMW PGA Championship | BMW PGA Championship |
| BMX | BMX |
| BNC | BNC connector |
| Bnei Akiva | Bnei Akiva |
| BNI per indbygger | gross domestic product |
| BNP | GNP |
| bo | live |
| Bo Diddley | Bo Diddley |
| Bo Johansson | Bo Johansson |
| boardingkort | boarding pass |
| boardingpas | boarding pass |
| Bob Beamon | Bob Beamon |
| Bob Dylan | Bob Dylan |
| Bob Holly | Bob Holly |
| Bob Kane | Bob Kane |
| Bob Marley | Bob Marley |
| Boba Fett | Boba Fett |
| Bobby Charlton | Bobby Charlton |
| Bobby Fischer | Bobby Fischer |
| Bobby Prince | Robert Prince |
| Boboll | Pesäpallo |
| Bobslæde | Bobsleigh |
| Boca Juniors | Club Atlético Boca Juniors |
| Bochum | Bochum |
| Bockscar | Bockscar |
| Boden | Boden Municipality |
| Bodensøen | Lake Constance |
| Bodhisattva | Bodhisattva |
| Bodilprisen | Bodil Awards |
| Bodom-mordene | Lake Bodom murders |
| Bodomsøen | Lake Bodom |
| Body Mass Index | Body mass index |
| bodybuilder | bodybuilder |
| Bodybuilding | Bodybuilding |
| Bodø | Bodø |
| Boeing | Boeing |
| Boer | Afrikaner |
| Boer-sprog | Dutch |
| Boerkrigen | Second Boer War |
| Boerrepublikkerne | Boer Republics |
| Boethius de Dacia | Boetius of Dacia |
| bog | book |
| bogbinder | bookbinder |
| bogbus | bookmobile |
| Bogens folk | People of the Book |
| Bogense Kommune | Bogense municipality |
| Bogfinke | Chaffinch |
| bogføring | bookkeeping |
| boghandel | bookshop |
| bogholder | accountant |
| bogholderi | accountancy |
| Bogoriasøen | Lake Bogoria |
| bogorm | bookworm |
| Bogotá | Bogotá |
| bogreol | bookcase |
| Bogskab | Library |
| bogstav | letter |
| Bogtryk | Printing |
| Bohr radius | Bohr radius |
| bohrium | bohrium |
| Bohrs atommodel | Bohr model |
| Bohus fæstning | Bohus Fortress |
| Bohuslav Martinu | Bohuslav Martinů |
| Bohuslän | Bohuslän |
| Bois de Boulogne | Bois de Boulogne |
| Boise | Boise |
| Bojan Krkic | Bojan Krkić |
| Bojana-kirken | Boyana Church |
| bokmål | Bokmål |
| Bokn | Bokn |
| Boknafjorden | Boknafjord |
| boks | box |
| Bokseroprøret | Boxer Rebellion |
| boksning | boxing |
| Bold | Ball |
| Boldklubben Frem | Boldklubben Frem |
| Boldklubben Skjold | BK Skjold |
| Bolianer | Bolivian |
| bolig | dwelling |
| boligareal | living space |
| boligbebyggelse | human settlement |
| Boligboble | Real estate bubble |
| boligforbedring | housing improvement |
| boliglovgivning | housing legislation |
| boligmiljø | living environment |
| Bolivia | Bolivia |
| Boliviansk | Bolivian |
| bolle | fuck |
| Bollywood | Bollywood |
| Bolmen | Bolmen |
| Bologna | Bologna |
| Bologna-massakren | Bologna massacre |
| Bolognaprocessen | Bologna Accord |
| Bolshoi teatret | Bolshoi Theatre |
| Bolsjevik | Bolshevik |
| Bolsjojteatret | Bolshoi Theatre |
| bolster | bolster |
| Boltzmanns konstant | Boltzmann constant |
| Bolzano | Bolzano |
| Bolívar | Bolívar |
| bom | tollgate |
| Bombardere | Bomb |
| bombe | bomb |
| Bombebælte | Explosive belt |
| Bombefly | Bomber |
| Bombningen af Libyen | Bombing of Libya |
| bomlærke | corn bunting |
| Bompenge | Motorway fee |
| bomuld | cotton |
| Bomuld-slægten | Gossypium |
| Bomærke | Private brand |
| Bon Scott | Bon Scott |
| Bonaire | Bonaire |
| Bonaventura | Bonaventure |
| bonde | farmer |
| bondefanger | scam |
| Bone | Bone |
| Bongo | Bongo drum |
| Bonn | Bonn |
| Bonnie Tyler | Bonnie Tyler |
| Bono | Bono |
| Bonobo | Bonobo |
| Bonsai | Bonsai |
| bonusfond | incentive fund |
| Boodjamulla Nationalpark | Boodjamulla National Park |
| BookCrossing | BookCrossing |
| Booker T | Booker Huffman |
| Bookerpris | Man Booker Prize |
| Bookerprisvindere | List of winners and shortlisted authors of the Booker Prize for Fiction |
| Boomerang | Boomerang |
| Boomerang-tågen | Boomerang Nebula |
| Bootdisk | Boot disk |
| Bootleg | Bootleg recording |
| bopæl | residence |
| bor | boron |
| Bora Bora | Bora Bora |
| Boracay | Boracay |
| Borat Sagdiyev | Borat |
| bord | table |
| Bordeaux | Bordeaux |
| bordel | brothel |
| Border Collie | Border Collie |
| Borderline-personlighedsforstyrrelse | Borderline personality disorder |
| Borderterrier | Border Terrier |
| bordfodbold | foosball |
| Bordhockey | ITHF table hockey |
| bordlampe | table lamp |
