| Biemann Immobilien-Verwaltungs GmbH & Co. KG | — | — | Erlangen | Germany |
| Bilkraft GmbH | — | — | Hamburg | Germany |
| Bimex Energy | — | +41 33 334 55 66 | Uetendorf | Switzerland |
| Bio-Tierkost.de | — | — | Berlin | Germany |
| Bioenergie Altenhof GmbH | — | — | Altenhof | Germany |
| Biogas Scharnebeck GmbH & Co. KG | — | — | Scharnebeck | Germany |
| Biogasbetrieb Schmidberrger | — | — | Biberach | Germany |
| Biohof Dörr | — | — | Eppelborn | Germany |
| Biohof Querdel | — | — | Sassenberg | Germany |
| Bioland-Hof Agena | — | — | — | Germany |
| Biolandhof-Vonagris | — | — | — | Germany |
| Biomethan Mühlacker GmbH & Co. KG | — | — | Mühlacker | Germany |
| Biomethan Mühlacker GmbH & Co. KG | — | — | Mühlacker | Germany |
| Biotrans GmbH | — | +49 2304 968500 | Schwerte | Germany |
| Bischöfliches Hilfswerk Misereor e. V. | — | — | Aachen | Germany |
| Björn Scherff Orthopädie-Schuhtechnik | — | — | Achim | Germany |
| Black-Forest-Pools | — | — | — | Germany |
| Blackforest Solar Solution GmbH & Co. KG | — | — | Appenweier | Germany |
| Blag Media Ltd | — | 448458905256 | Old Windsor | United Kingdom |
| Blaue Erdbeere Aachen GmbH | — | +49 241 95230313 | Aachen | Germany |
| Blend + GmbH | — | +492421555950 | Düren | Germany |
| Blitz und Gebäudeschutz Barnowski | info@barnowski.de | 05382 - 2662 | Bad Gandersheim | Germany |
| Bloch3 GmbH | — | — | Wien | Austria |
| Blocher Partners | — | +49 711 224820 | Stuttgart | Germany |
| Blocker | — | — | — | |