| Box Interiør Design AS | Professional & scientific | 2001 |
| Boy Pablo AS | Arts & recreation | 2018 |
| Bra Bolig AS | Real estate | 2012 |
| Bra Tre AS | Construction | 2019 |
| Bra Utleie AS | Administrative & support | 2024 |
| Bradbenken 1 AS | Real estate | 1998 |
| Bradbenken 1 KS | Real estate | 1998 |
| Bradbenken Eiendom AS | Real estate | 2006 |
| Bradbenken Eiendom Holding AS | Real estate | 2007 |
| Bradbenken Partner AS | Financial services | 2003 |
| Brage Finans AS | Financial services | 2010 |
| Bragi Productions Da | Information & communication | 2015 |
| Brakehaugen Huseierlag SA | Real estate | 2002 |
| Braline Holding AS | | 2017 |
| Bralo-Tekk Da | Construction | 1988 |
| Brandity AS | Professional & scientific | 2011 |
| Brandmaker AS | Professional & scientific | 2000 |
| Brando Broadcast Services AS | Professional & scientific | 2023 |
| Brandt Productions AS | Information & communication | 2018 |
| Brann Stadion AS | Real estate | 1991 |
| Brasilia Bergen AS | Hospitality | 2015 |
| Brasol Invest AS | | 2025 |
| Bratland Eiendomsutvikling AS | Real estate | 2019 |
| Bratland Forgings AS | Wholesale & retail | 2026 |
| Bratland Holding Invest AS | | 2019 |
| Bratt Sport Og Fritid Da | Wholesale & retail | 2002 |
| Brattaule Holding AS | | 2024 |
| Brattlien 13 AS | Real estate | 2020 |
| Braviers AS | Wholesale & retail | 2025 |
| Bravur System AS | Wholesale & retail | 2014 |
| Bre AS | Real estate | 2024 |
| Bre Bolig AS | Real estate | 1986 |
| Bredalsmarken 15 AS | Real estate | 2005 |
| Brede Kristensen Holding AS | | 2023 |
| Breeze Bergen City AS | Hospitality | 2026 |
| Breeze Drift AS | Real estate | 2025 |
| Breeze Hotels AS | Hospitality | 2024 |
| Breeze IP AS | Information & communication | 2023 |
| Breeze Victoria AS | Hospitality | 2026 |
| Breidablikkveien 1B AS | Real estate | 2017 |
| Breimyra 50 AS | Real estate | 2011 |
| Breimyra SA | Real estate | 1984 |
| Breisteingården Holding AS | Hospitality | 2013 |
| Breivet AS | | 2019 |
| Breivik Brygge AS | Real estate | 2004 |
| Breivika Industriveg 31 AS | Real estate | 1995 |
| Breiviken Eiendom AS | Real estate | 1996 |
| Breiviksbakken 1C AS | Real estate | 2020 |
| Brekke Finans AS | Financial services | 2021 |
| Brendehaugen 15 AS | Real estate | 2018 |
| Brentebråten & Jung | Administrative & support | 2010 |
| Bretten AS | | 2021 |
| Brgn AS | Professional & scientific | 2019 |
| Brian Boru AS | Hospitality | 2018 |
| Brian Boru MF AS | Professional & scientific | 2023 |
| Brik AS | Information & communication | 2013 |
| Brikk Invest AS | Real estate | 2021 |
| Brilliance AS | Arts & recreation | 2020 |
| Brilliance Live AS | Professional & scientific | 2019 |
| Britt Moholt AS | | 2017 |
| Broadstone Network AS | Information & communication | 2016 |
| Broadstone Network Holding AS | Information & communication | 2021 |
| Broadstone Studio AS | Information & communication | 2024 |
| Broadstone Systems | Administrative & support | 2017 |
| Brobyggere Bemannings- Og Rekrutteringstjeneste AS | Administrative & support | 2023 |
| Broch Holding AS | | 2017 |
| Brodergården AS | Real estate | 1969 |
| Brookfield Holding AS | | 2020 |
| Brostein Filmproduksjon AS | Information & communication | 2026 |
| Bru & Broch AS | | 2023 |
| Bru Kaffebrenneri AS | Manufacturing | 2021 |
| Brudehuset AS | Wholesale & retail | 2006 |
| Brudvik Fysioterapi AS | Health & social care | 2022 |
| Brugata 19 AS | Real estate | 2019 |
| Bruheim Eiendom AS | Real estate | 2021 |
| Bruheim Holding AS | Real estate | 2017 |
| Bruheim Invest AS | | 2021 |
| Bruheim Kapital AS | Real estate | 2022 |
| Brushytten Skanseguttenes Forening | Wholesale & retail | 1995 |
| Bruvik Capital AS | | 2026 |
| Bruviks Eiendommer AS | Real estate | 1961 |
| Bruviks Eiendommer Holding AS | Real estate | 2024 |
| Brygg 1 Bergen AS | Wholesale & retail | 2019 |
| Brygge Buen AS | Wholesale & retail | 1982 |
| Bryggekanten AS | Real estate | 1975 |
| Bryggekanten I Holding AS | Real estate | 2005 |
| Bryggekanten II Holding AS | Financial services | 2005 |
| Bryggekvartalet AS | Real estate | 1998 |
| Bryggen 43 AS | Hospitality | 2012 |
| Bryggen Business Hub AS | Real estate | 2022 |
| Bryggen Commercial Management International AS | Transport & logistics | 1998 |
| Bryggen Eiendom AS | Real estate | 2016 |
| Bryggen Eiendomsmegling AS | Real estate | 2002 |
| Bryggen Eiendomsutvikling AS | | 2022 |
| Bryggen Hudlegesenter AS | Health & social care | 2020 |
| Bryggen Husflid AS | Wholesale & retail | 1989 |
| Bryggen Revisjon AS | Professional & scientific | 1992 |
| Bryggen Shipping International AS | Transport & logistics | 2010 |
| Bryggen Tannlegesenter AS | Health & social care | 2020 |
| Bryggen Tracteursted AS | Hospitality | 2003 |