| Blodeuwedd | Blodeuwedd |
| Bloemfontein | Bloemfontein |
| Bloemfontein Celtic | Bloemfontein Celtic Football Club |
| blog | blog |
| blogger | blogueur |
| blogosphere | blogosphère |
| Blois | Blois |
| bloke | type |
| Blomberg-Fritsch Affair | Affaire Blomberg-Fritsch |
| Blombos Cave | Blombos |
| Blonay | Blonay |
| blond | blond |
| blonde | blond |
| Blondie | Blondie |
| blood | sang |
| Blood and Bones | Blood and Bones |
| Blood and Sand | Arènes sanglantes |
| Blood and soil | Blut und Boden |
| Blood Angels | Blood Angels |
| blood bank | banque du sang |
| blood blister | pinçon |
| blood brother | frère de sang |
| Blood Canticle | Cantique sanglant |
| blood cell | globule |
| blood count | numération globulaire |
| Blood court at Cannstatt | Massacre de Cannstatt |
| Blood diseases | Hémopathie |
| Blood eagle | Aigle de sang |
| Blood Feast | Orgie sanglante |
| blood feud | vendetta |
| blood group | groupe sanguin |
| blood is thicker than water | la voix du sang est la plus forte |
| Blood island | Blood Island |
| Blood libel against Jews | Accusation de crime rituel contre les Juifs |
| Blood line | Famille |
| blood money | prix du sang |
| blood orange | orange sanguine |
| Blood picture | Hémogramme |
| blood plasma | plasma sanguin |
| blood platelet | plaquette |
| blood poisoning | septicémie |
| blood pressure | tension |
| Blood purity | Sang-pur |
| Blood Ravens | Blood Ravens |
| blood relation | parent par le sang |
| blood relationship | consanguinité |
| blood sausage | boudin |
| Blood Simple | Sang pour sang |
| blood sister | sœur de sang |
| Blood Sucking Freaks | Incredible Torture Show |
| blood test | analyse de sang |
| blood transfusion | transfusion sanguine |
| blood type | groupe sanguin |
| blood vessel | vaisseau sanguin |
| Blood Wedding | Noces de sang |
| Blood Work | Créance de sang |
| blood-and-thunder | sensationnel |
| Blood-oxygen-level dependent | Signal BOLD |
| blood-red | rouge sang |
| bloodbath | carnage |
| bloodcurdling | épouvantable |
| bloodhound | limier |
| Bloodhound Gang | The Bloodhound Gang |
| bloodless | non-violent |
| bloodletter | saigneur |
| bloodletting | saignée |
| bloodlust | soif de sang |
| bloodnut | rouquin |
| bloodroot | sanguinaire |
| bloodshed | carnage |
| bloodshot | injecté de sang |
| bloodstain | tache de sang |
| bloodstained | ensanglanté |
| bloodstock | chevaux pur sang |
| bloodstone | jaspe sanguin |
| bloodstream | système sanguin |
| bloodsucker | sangsue |
| bloodthirsty | sanguinaire |
| bloody | sanglant |
| Bloody Friday | Bloody Friday |
| bloody hell | purée |
| Bloody Mary | bloody mary |
| bloody nose | nez saignant |
| Bloody Sunday | Bloody Sunday |
| Bloody-nosed beetle | Timarcha tenebricosa |
| Blook | Blook |
| bloom | fleurir |
| Bloom syndrome | Syndrome de Bloom |
| Bloomberg Television | Bloomberg TV |
| bloomers | culotte bouffante |
| Bloomery | Bas fourneau |
| blooming | floraison |
| Bloomington | Bloomington |
| Bloomsbury Group | Bloomsbury Group |
| Bloomsbury Publishing | Bloomsbury |
| blooper | bévue |
