| Blir AS | Sandnes | 2025 |
| Bliss Coaching & Consulting AS | Nøtterøy | 2019 |
| Blitz-Reisen GmbH | De-51491 Overath | 2018 |
| Blitzrotary GmbH | De-78199 Braulingen | 2014 |
| Blixen Tours Norway AS | Skien | 2014 |
| Blizzard AS | Oslo | 2020 |
| Blom Consulting AS | Oslo | 2016 |
| Blomen Hage Og Landskap AS | Stavanger | 2013 |
| Blomster Renhold AS | Oslo | 2022 |
| Blomsterelsker Da | Oslo | 2024 |
| Blomsterhjelpen AS | Åfjord | 2025 |
| Blomstertorget Oslo AS | Oslo | 2024 |
| Blomstervik Grønt Og Anlegg Ans | Lommedalen | 1987 |
| Bloodycatch AS | Skedsmokorset | 2024 |
| Blowtech Group Nuf | Kongsvinger | 2016 |
| BLP Luxepadel Da | Askim | 2025 |
| BLS Services AS | Oslo | 2025 |
| Blu Asset AS | Hundvåg | 2020 |
| Blu Offshore AS | Stavanger | 2016 |
| Blu Renhold AS | Oslo | 2021 |
| Blue Eagle Well Services Ltd | Arbroath Dd11 4Rx, Scotland | 2014 |
| Blue Escape AS | Oslo | 2024 |
| Blue Group AS | Oslo | 2021 |
| Blue Planet Features Da | Ulsteinvik | 2000 |
| Blue Power AS | Porsgrunn | 2021 |
| Blue Power Holding AS | Porsgrunn | 2021 |
| Blue Puffin AS | Kamøyvær | 2018 |
| Blue Renhold Service AS | Ytre Arna | 2016 |
| Bluecrane AS | Oslo | 2012 |
| Bluecrew AS | Harstad | 2025 |
| Blueevents.No AS | Kristiansund N | 2015 |
| Blueiq AS | Stathelle | 2025 |
| Bluejeans Diplomacy AS | Oslo | 2015 |
| Bluenord Energy Denmark | Dk-2100 København | 2024 |
| Bluenord Energy UK Ltd | London W1K 7Qd England | 2023 |
| Bluepaper AS | Kapp | 2025 |
| Bluesky Travel Tours Ans | Oslo | 1999 |
| Bluestream Laser Scandinavia AS | Sandefjord | 2022 |
| Bluesynergi AS | Drammen | 2023 |
| Bluewater Holding B.V. | Nl-2132Ls Hoofddorp | 2002 |
| Bluewater International B.V. | 2132Ls Hoofddorp | 2002 |
| Bluexecutive AS | Oslo | 2009 |
| Bluexperience Ans | Bødalen | 2003 |
| Blumandag AS | Oslo | 2019 |
| Blunordic AS | Oslo | 2013 |
| Blystad Service & Utleie AS | Åndalsnes | 2025 |
| Blå Bemanning AS | Knarrlagsund | 2025 |
| Blåbyløpet AS | Sortland | 2026 |
| Blålykke AS | Ski | 2024 |
| Blåtinden AS | Svolvær | 2019 |
| Blåvatten AS | Risør | 2018 |
| BM Consulting AS | Haugesund | 2013 |
| BM Pluss AS | Ålesund | 2026 |
| Bma Utstyr AS | Rovde | 2026 |
| BMG Stein & Hage AS | Klæbu | 2012 |
| BMG Utleie AS | Nesoddtangen | 2021 |
| Bmi Lab Deutschland GmbH | De-80799 München | 2022 |
| BMJ AS | Dal | 2013 |
| BMJ Publishing Group Limited | London Wc1H 9Jr England | 2026 |
| Bmo Anleggservice AS | Sandefjord | 2015 |
| BMP Murmesterforretning AS | Bønes | 2007 |
| BMS Bulgaria Ood | Bg-7200 Razgrad | 2008 |
| BMS Heavy Cranes AB Nuf | Se-232 37 Arlöv | 2026 |
| BMS Heavy Cranes Iberica SL | Es-28008 Madrid | 2021 |
| BMS Heavy Cranes Ltd | D01X8H2 Ireland | 2023 |
| BMS Invest AS | Oslo | 2005 |
| BMS Krane GmbH | 24955 Harrislee | 2017 |
| BN Rent Og Grønt AS | Oslo | 1996 |
| BN Rental AS | Fagerstrand | 2018 |
| BNB Travel AS | Tranby | 2025 |
| Bnbdrift Og Rekruttering AS | Stadsbygd | 2025 |
| BNS Container AS | Oslo | 1983 |
| BNS Holding AS | Oslo | 1996 |
| BNS Invest AS | Oslo | 2014 |
| BNS Utleie AS | Oslo | 2021 |
| Bo D Petersson Åkeri AB | Halden | 2006 |
| Bo Og Hage Service AS | Horten | 2024 |
| Bo Og Omsorg Eiendom AS | Hønefoss | 2016 |
| Bo Service AS | Mo I Rana | 2025 |
| Boa Ahts AS | Trondheim | 2020 |
| Boa Konsept AS | Oslo | 2017 |
| Board Ability AS | Oslo | 2021 |
| Boasson AS | Kokstad | 1986 |
| Boasson Eiendom AS | Kokstad | 1989 |
| Boat Adventure Stavanger AS | Stavanger | 2024 |
| Boatshow AS | Tønsberg | 2015 |
| Boatwasher Norge Da | Oslo | 2004 |
| Bobco Survey & Inspection Limited | Ka21 5Qs Ayrshire, Scotland | 2010 |
| Bobilgruppen AS | Jessheim | 2026 |
| Bobilmeglern AS | Nøtterøy | 2020 |
| Bobilutleie Sør Ans | Grimstad | 2006 |
| Bobilutleier AS | Avaldsnes | 2021 |
| Boblefotball Norge AS | Oslo | 2015 |
| Bodin Allservice AS | Bodø | 2026 |
| Bodutleie Avdeling Loesmoen AS | Hokksund | 2025 |
| Bodø & Lofoten Campervans AS | Bodø | 2025 |
| Bodø Apartment Ans | Bodø | 2000 |
| Bodø Bilutleie AS | Bodø | 2000 |
| Bodø Containerutleie AS | Bodø | 2012 |
| Bodø Event & Utleie AS | Bodø | 2025 |