| Bergfjord & Haukedal AS | | 2025 |
| Bergstrøm Elektro AS | Construction | 1999 |
| Bergum Drift Og Invest AS | | 2019 |
| Berland Bygg AS | Construction | 1993 |
| Berland Eiendom AS | Real estate | 1996 |
| Berland Holding AS | Construction | 2005 |
| Berland Invest AS | Real estate | 2001 |
| Berle Bryggen AS | Wholesale & retail | 2021 |
| Bersand AS | | 2005 |
| Berstadhuset AS | Real estate | 2016 |
| Bertheussen Holding AS | Construction | 2021 |
| Besk Invest AS | | 2024 |
| Bestek AS | Information & communication | 2025 |
| Betcon AS | Professional & scientific | 2005 |
| Betec AS | Professional & scientific | 1989 |
| Beth Invest AS | | 2023 |
| Betomur AS | Wholesale & retail | 1991 |
| Betongen AS | Real estate | 2000 |
| Better Prospects AS | Professional & scientific | 2024 |
| Bevital AS | Professional & scientific | 2003 |
| Beykent AS | Wholesale & retail | 2023 |
| BG Hylle 3 AS | Real estate | 2025 |
| BG Hylle 5 AS | Real estate | 2026 |
| BG Hylle 6 AS | Real estate | 2026 |
| BG Hylle 8 AS | Real estate | 2026 |
| BG Vaskerelven AS | Wholesale & retail | 2024 |
| Bga AS | | 2026 |
| Bgfem AS | Hospitality | 2024 |
| Bgi Eiendom G AS | Real estate | 2003 |
| Bgi Eiendom U AS | Real estate | 2008 |
| Bgo Eiendom AS | Real estate | 2012 |
| Bhakvs Group AS | | 2024 |
| BHG Eiendom AS | Real estate | 1997 |
| BHG Newco 1 AS | | 2022 |
| BHG Newco 2 AS | | 2022 |
| BHG Stavanger Holding AS | Real estate | 2022 |
| BI1 Bigård AS | Agriculture & fishing | 2018 |
| Bia Investering AS | Manufacturing | 2016 |
| Bibbi Invest AS | Real estate | 2011 |
| Biblioteket Bar AS | Hospitality | 2012 |
| Bici Bergen AS | Other services | 2024 |
| Bien Bar AS | Hospitality | 2006 |
| Bien Basar AS | Hospitality | 2018 |
| Bien Event AS | Hospitality | 2019 |
| Bien Holding AS | Hospitality | 2019 |
| Bien Kode 1 AS | Hospitality | 2016 |
| Bien Litteraturhuset AS | Hospitality | 2026 |
| Biffoteket AS | Hospitality | 2026 |
| Bifrost Alpha Development AS | Arts & recreation | 2018 |
| Big Jims Trims AS | Other services | 2018 |
| Big M AS | | 2022 |
| Bigb Holding AS | | 2020 |
| Bigboy AS | Professional & scientific | 2024 |
| Bigsound AS | Arts & recreation | 2021 |
| Bigz AS | Professional & scientific | 2021 |
| Bil & Maskin Transport Ans | Transport & logistics | 2003 |
| BILCO BILDELER Andresen & Berland | Wholesale & retail | 1985 |
| Bildeleringen SA | Other services | 1996 |
| Biljarden Bergen AS | Arts & recreation | 1995 |
| Bill Schjelderup AS | Financial services | 2005 |
| Billig Golfutstyr AS | Wholesale & retail | 2026 |
| Bilparaplyen AS | Information & communication | 2018 |
| Bilpleie Spesialisten Vest Ans | Other services | 2003 |
| Bilreparatøren Andersen AS | Other services | 1998 |
| Bilservice AS | Other services | 1985 |
| Biltur Da | Administrative & support | 2021 |
| Bimsum AS | | 2017 |
| Bingopartner AS | Arts & recreation | 2014 |
| Biomega Group AS | Manufacturing | 2000 |
| Biosense Laboratories AS | Professional & scientific | 1996 |
| Biota Naturkompetanse AS | Professional & scientific | 2022 |
| Biovest AS | | 2019 |
| Bir AS | Water & waste | 2001 |
| Bir Husholdning AS | Water & waste | 2002 |
| Bir Infrastruktur AS | Water & waste | 2007 |
| Bir Nyverdi AS | Water & waste | 2002 |
| Bir Ressurs AS | Water & waste | 2003 |
| Birdbay AS | Information & communication | 2009 |
| Birdsview AS | Information & communication | 2017 |
| Birger Gran AS | Wholesale & retail | 1936 |
| Birk Advokatfirma AS | Professional & scientific | 2020 |
| Birkebeiner Eiendom AS | Real estate | 2009 |
| Birkebeiner Holding AS | Real estate | 2015 |
| Birkebeinergaten 8 AS | Real estate | 2013 |
| Birkebeinersenteret AS | Real estate | 2018 |
| Birken Barnehage AS | Education | 2016 |
| Birkenes Motorsenter AS | Wholesale & retail | 2021 |
| Birkeveien 1 AS | Households | 1979 |
| Birkeveien Invest AS | Real estate | 2015 |
| Bis AS | | 2021 |
| Bisken Apotekdrift AS | Wholesale & retail | 2023 |
| Bisken Invest AS | | 2022 |
| Biskopshavn Barnehage SA | Education | 2015 |
| Biskopshavn Legesenter AS | Health & social care | 2024 |
| Biskopshus Eiendom AS | Real estate | 2022 |
| Bispengsgården AS | Real estate | 2012 |
| Bito Holding AS | | 2018 |
| BJ Holdings AS | | 2020 |
| Bjarnessen Enterprises AS | | 2024 |
| Bjarte & Kim Art Dekor Da | Professional & scientific | 1995 |