| Bast Arbeidshelse AS | Health & social care | 2025 |
| Bast Holding AS | Financial services | 2011 |
| Baste Matre Corporate Finance AS | Professional & scientific | 2015 |
| Batt-Com Net AS | Information & communication | 2014 |
| Bauer AS | Real estate | 2003 |
| Bauge Holding AS | Construction | 2019 |
| Baun AS | Professional & scientific | 2012 |
| Bauta Eiendom AS | Real estate | 2010 |
| Bazar Vaskerelven AS | Wholesale & retail | 1996 |
| BB & Co Holding AS | Real estate | 2010 |
| BB Beauty AS | Wholesale & retail | 2026 |
| BB Bryggen AS | Other services | 2024 |
| BB Folie Og Reklame AS | Professional & scientific | 2026 |
| BB Forvaltning AS | Real estate | 2025 |
| BB International AS | Professional & scientific | 2019 |
| BB16 Holding AS | | 2019 |
| Bba Holding AS | Professional & scientific | 2010 |
| Bbbb AS | Wholesale & retail | 2026 |
| BBK Holding AS | Professional & scientific | 2013 |
| BBS Holding AS | Wholesale & retail | 1987 |
| Bbsm AS | Real estate | 2025 |
| BC Gallery AS | Wholesale & retail | 2023 |
| BC Holding Invest AS | Manufacturing | 2022 |
| BC I AS | | 2020 |
| Be Capital AS | Professional & scientific | 2021 |
| Be Event AS | Arts & recreation | 2023 |
| Beaa Holding AS | Financial services | 2005 |
| Beam AS | | 2019 |
| Beats Before Bars Da | Information & communication | 2011 |
| Beauty Look AS | Other services | 2016 |
| Bebetter AS | Education | 2020 |
| Beck Live AS | Professional & scientific | 2019 |
| Beck Sports AS | Arts & recreation | 2024 |
| Becor AS | Professional & scientific | 2011 |
| Beddingen 16 AS | Real estate | 2019 |
| Beddingen 16 Hjemmel AS | Real estate | 2007 |
| Bedre Burger 5 AS | Hospitality | 2022 |
| Beec AS | Information & communication | 2019 |
| Beerenberg Consulting Da | Real estate | 2016 |
| Befas Invest AS | Real estate | 2010 |
| Beffen Drift AS | Transport & logistics | 2020 |
| Befo Fantoft Eiendom AS | Real estate | 1997 |
| Befo Holding AS | Construction | 2005 |
| Behalde AS | | 2021 |
| Behandling Bergen AS | Health & social care | 2017 |
| Behandling for Alle AS | Health & social care | 2005 |
| Bejimar AS | Financial services | 2020 |
| Bejoma Holding AS | Wholesale & retail | 2015 |
| Beka Eiendom AS | Real estate | 2007 |
| Beko AS | Wholesale & retail | 2016 |
| Bel Air AS | Professional & scientific | 2002 |
| Bella Donna Galleriet AS | Wholesale & retail | 1989 |
| Bella Donna Norge AS | Administrative & support | 1990 |
| Bellamir Invest AS | Administrative & support | 2020 |
| Bellavi Holding AS | Health & social care | 2026 |
| Belle Invest AS | Real estate | 2005 |
| Bellevuebakken 9 AS | Real estate | 1986 |
| Bellevuebakken Landhandleri AS | Wholesale & retail | 2017 |
| Bellgården AS | Real estate | 1999 |
| Belman TTT Holding AS | Information & communication | 2018 |
| Benchmark Animal Health Norway AS | Wholesale & retail | 2019 |
| Benchmark Genetics Norway AS | Agriculture & fishing | 2001 |
| Bendik AS | Arts & recreation | 2016 |
| Bendixensvei 46 AS | Real estate | 1947 |
| Benedicte WG AS | | 2018 |
| Benedictinerne | Arts & recreation | 2013 |
| Benguela Marine Management AS | Transport & logistics | 2006 |
| Benny Leo AS | | 2025 |
| Bennys Ans | Professional & scientific | 1990 |
| Bentesalongen AS | Other services | 2009 |
| Benum Eiendom AS | Real estate | 1994 |
| Benwo Invest AS | | 2024 |
| Beom AS | | 2023 |
| Berentsen Holding AS | Financial services | 2018 |
| Berentzen Holding AS | Real estate | 2014 |
| Berg Norway AS | Wholesale & retail | 2017 |
| Bergaas Holding AS | Information & communication | 2021 |
| Bergby Eiendomsmegling AS | Real estate | 2025 |
| Bergen & Omegn Begravelsehjelp AS | Other services | 1991 |
| Bergen Air Bidco AS | | 2026 |
| Bergen Air Topco AS | | 2026 |
| Bergen Apollon AS | Hospitality | 1987 |
| Bergen Audio AS | Wholesale & retail | 2018 |
| Bergen Audio Innovation AS | Professional & scientific | 2024 |
| Bergen Auto AS | | 2005 |
| Bergen Backline AS | Administrative & support | 2014 |
| Bergen Ballettbutikk AS | Wholesale & retail | 2020 |
| Bergen Banking Eiendom AS | Real estate | 2005 |
| Bergen Bar Drift AS | Hospitality | 2025 |
| Bergen Barberstue AS | Other services | 2014 |
| Bergen Barokk AS | Arts & recreation | 2000 |
| Bergen Batteri Service AS | Wholesale & retail | 1987 |
| Bergen Beds AS | Real estate | 2023 |
| Bergen Begravelsesbyrå AS | Other services | 2020 |
| Bergen Biff AS | Hospitality | 2000 |
| Bergen Bil Og MC Skole AS | Education | 1989 |
| Bergen Bilberging AS | Transport & logistics | 2015 |
| Bergen Body Work AS | Health & social care | 2012 |
| Bergen Boligfornyelse AS | Real estate | 2019 |
| Bergen Boliginvest AS | Real estate | 2018 |