| blue trousers | blaue Hose |
| blue underwing | Blaues Ordensband |
| blue underwing moth | Blaues Ordensband |
| blue unicorn | Blauschwanz-Nasendoktorfisch |
| blue vanga | Blauvanga |
| blue vat | Blauküpe |
| Blue Velvet | Blue Velvet |
| blue velvet damselfish | Neon-Riffbarsch |
| blue video | Porno |
| blue violet | Duftveilchen |
| blue vitriol | blauer Vitriol |
| blue water speedwell | Blauer Wasser-Ehrenpreis |
| Blue Water, White Death | Blaues Wasser, weisser Tod |
| blue wax | blaues Wachs |
| blue waxbill | blauohriger Schmetterlingsfink |
| blue weakness | Blausehschwäche |
| Blue Whale | Blauwal |
| blue whale bull | Blauwalbulle |
| blue whale bulls | Blauwalbullen |
| blue whale calf | Blauwalkalb |
| blue whale calves | Blauwalkälber |
| blue whale cow | Blauwalkuh |
| blue whale cows | Blauwalkühe |
| blue whiting | Blauer Wittling |
| blue whortleberry | Schwarzbeere |
| blue wildebeest | Streifengnu |
| blue wildebeests | Streifengnus |
| blue willow | Silberweide |
| blue with cold | blau vor Kälte |
| blue wood aster | Schleieraster |
| blue wood lettuce | Zweijähriger Lattich |
| blue wren | Prachtstaffelschwanz |
| blue wren warbler | Kaiserstaffelschwanz |
| blue zinc violet | Blaues Galmei-Veilchen |
| Blue Öyster Cult | Blue Öyster Cult |
| Blue's Clues | Blue's Clues - Blau und schlau |
| blue-and-gold macaw | Gelbbrustara |
| Blue-and-White Flycatcher | Japanschnäpper |
| Blue-and-yellow Macaw | Gelbbrustara |
| blue-back grosbeak | Stahlbischof |
| blue-backed conebill | Blaurücken-Spitzschnabel |
| blue-backed fairy bluebird | Türkisfeenvogel |
| blue-backed manakin | Prachtpipra |
| blue-backed niltava | Hyazinthenblauschnäpper |
