| Brugata 12 AS | Real estate | 2019 |
| Brugata 15 AS | Real estate | 2016 |
| Brugata 50 Og 56 Holding AS | Real estate | 2020 |
| Brugata 50/56 AS | Real estate | 2023 |
| Brugata Blomst Ans | Wholesale & retail | 1989 |
| Brugata Kjøtt Delikatesse AS | Wholesale & retail | 2020 |
| Bruk AS | Real estate | 2013 |
| Bruk Bygg AS | Real estate | 2023 |
| Bruk Hagen AS | Agriculture & fishing | 2020 |
| Bruk Studio AS | Information & communication | 2026 |
| Brukbar Film AS | Wholesale & retail | 2025 |
| Bruker Norway AS | Information & communication | 2015 |
| Brukerfellesskapet Framveien | Real estate | 2002 |
| Bruket Brygge Holding AS | Real estate | 2017 |
| Bruksbo AS | Administrative & support | 1992 |
| Bruksgata 7 AS | Real estate | 2022 |
| Brukshunden AS | Wholesale & retail | 2025 |
| Bruktbil Senteret AS | Wholesale & retail | 2009 |
| Bruktbil.No AS | Wholesale & retail | 2017 |
| Bruktvogna Ans | Wholesale & retail | 1995 |
| Bruland Venture AS | Financial services | 2014 |
| Brumle Eiendom AS | | 2026 |
| Brumlebassen Barnehage AS | Education | 2006 |
| Brumm AS | Real estate | 2018 |
| Brumm Sneisungen AS | | 2025 |
| Brumunddal Bolig AS | Real estate | 2026 |
| Brunch Oslo AS | Professional & scientific | 2016 |
| Brundtland & Krosby AS | Professional & scientific | 2018 |
| Brundtland Økonomi Og Regnskap AS | Professional & scientific | 2022 |
| Brune Bygg AS | Construction | 2023 |
| Brunel Floating AS | Professional & scientific | 2021 |
| Brunello AS | Hospitality | 2016 |
| Brunholmen AS | Hospitality | 2013 |
| Brunlanes Solkraftverk AS | Energy | 2025 |
| Bruno Holding AS | | 2023 |
| Brunsgard AS | Professional & scientific | 2012 |
| Brunsvika Invest AS | | 2026 |
| Brus AS | Real estate | 2005 |
| Bruse Holding AS | Professional & scientific | 2005 |
| Bruse Invest AS | Administrative & support | 1997 |
| Brusetkollen SA | Construction | 2025 |
| Brusettunet AS | Real estate | 2022 |
| Bruseveien Invest AS | Real estate | 2023 |
| Brushclearing AS | | 2023 |
| Brusjan AS | Professional & scientific | 2017 |
| Bruskeland AS | Administrative & support | 2020 |
| Brusletto & Co AS | Wholesale & retail | 2024 |
| Brusletto Eiendom AS | Real estate | 1997 |
| Brussels Airlines NV Nuf | Transport & logistics | 2002 |
| Brustad Marketing & Communication AS | Professional & scientific | 2006 |
| Brustad-Nilsen Consulting AS | Professional & scientific | 2018 |
| Brustads AS | | 2022 |
| Brut Boogaloo Da | Arts & recreation | 2005 |
| Brutech AS | Information & communication | 2019 |
| Bruttern Media AS | Information & communication | 2024 |
| Brutus Capital AS | Financial services | 2017 |
| Brutus Holding AS | Real estate | 2015 |
| Brutuz AS | | 2025 |
| Bruu Eiendom AS | Real estate | 1977 |
| Bruun Consulting AS | Professional & scientific | 2022 |
| Bruun-Larsen AS | Hospitality | 2016 |
| Bruusgaardbooking AS | Arts & recreation | 2013 |
| Bruvang AS | Arts & recreation | 2021 |
| Bruvik Invest AS | | 2023 |
| Bruvin Park AS | Real estate | 2016 |
| Bruvin Park II AS | Real estate | 2008 |
| Bruvoll Arkitektur AS | Professional & scientific | 2011 |
| Bruynzeel Nuf | Construction | 2023 |
| Bruynzeel Storage Systems AS | Wholesale & retail | 2012 |
| BRW Invest AS | Professional & scientific | 2009 |
| BRX Capital House AS | Information & communication | 2026 |
| BRX Commercial Finance AS | Professional & scientific | 2026 |
| Bryde Invest AS | | 2025 |
| Brygga 18 AS | Real estate | 2022 |
| Brygga 18 SPG Holding AS | Real estate | 2022 |
| Brygga 20 AS | Real estate | 2021 |
| Brygga Hamar AS | Real estate | 2022 |
| Brygga Hotel AS | Hospitality | 1998 |
| Brygge AS | Administrative & support | 2026 |
| Brygge Hygge Capital AS | | 2025 |
| Bryggebaren AS | Hospitality | 2007 |
| Bryggedrift AS | Real estate | 1989 |
| Bryggegata 9 AS | Real estate | 1989 |
| Bryggegata Invest AS | | 2025 |
| Bryggekanten Bodø AS | Real estate | 2016 |
| Bryggen Bilformidling AS | Administrative & support | 2020 |
| Bryggeri- Og Drikkevareforeningens Servicekontor AS | Other services | 1961 |
| Bryggerigården AS | Real estate | 2012 |
| Bryggerigården Holding AS | | 2025 |
| Bryggerikvartalet AS | Real estate | 2013 |
| Bryggeriveien 9 AS | Real estate | 2014 |
| Bryggesøm AS | Wholesale & retail | 2020 |
| Bryggetorget 18 AS | Real estate | 2018 |
| Bryggmester Bob AS | Hospitality | 2014 |
| Bryhni.Com AS | Information & communication | 2008 |
| Bryl AS | | 2021 |
| Bryn Aarflot AS | Professional & scientific | 1998 |
| Bryn Auto AS | Wholesale & retail | 2026 |
| Bryn Auto Salg Og Service AS | Other services | 2014 |
| Bryn Autosalg AS | Wholesale & retail | 1983 |