| Billi Trafikk Eiendom AS | Real estate | 1997 |
| BILMEGLER1.NO AS | Wholesale & retail | 2023 |
| Biloppkjøper Rogaland AS | Wholesale & retail | 2025 |
| Bilparkforvalteren AS | Professional & scientific | 2026 |
| Bilstad AS | Wholesale & retail | 2018 |
| Bilstad Contracting AS | Administrative & support | 2026 |
| Bilteknikk 1 AS | Wholesale & retail | 2011 |
| Bilteknisk Byrå AS | Professional & scientific | 2017 |
| Bims BS & B Ineentory Management Services Limited | Wholesale & retail | 1996 |
| Bindrs.Io AS | Information & communication | 2020 |
| Bindx AS | Wholesale & retail | 2025 |
| Bintang Holding AS | | 2025 |
| Binvest AS | Real estate | 2005 |
| Biogenic Norge AS | Information & communication | 2023 |
| Biolink Group AS | Professional & scientific | 1999 |
| Biolink Industrial AS | Real estate | 2017 |
| Bippr AS | Education | 2020 |
| Birkeland Tre AS | Wholesale & retail | 2002 |
| Birkelin Invest AS | Professional & scientific | 2012 |
| Birken & Co AS | Construction | 2005 |
| Birva AS | Information & communication | 2026 |
| Bisa Holding AS | | 2018 |
| Bitleaf AS | Professional & scientific | 2024 |
| Bitteliten Broderi Og Miniatyrer AS | Wholesale & retail | 2018 |
| Bitunitor AS | Information & communication | 2017 |
| Bjelland Utvikling AS | Real estate | 2018 |
| Bjerga Holding AS | Real estate | 2020 |
| Bjerga Invest AS | Financial services | 2013 |
| Bjerga Regnskap AS | Professional & scientific | 2021 |
| Bjergabygg AS | Construction | 1997 |
| Bjergabygg Bolig AS | Real estate | 2018 |
| Bjerkfoni AS | Information & communication | 2019 |
| Bjerks Eiendom AS | Real estate | 2005 |
| Bjerks Holding AS | Real estate | 2005 |
| Bjerks Trevarefabrikk AS | Manufacturing | 1977 |
| BJM Invest AS | | 2022 |
| Bjordal-Norheim AS | Construction | 2021 |
| Bjuland Drift AS | Health & social care | 2021 |
| Bjuland Holding AS | Health & social care | 2021 |
| Bjødnabeen 6 AS | Real estate | 2006 |
| Bjørg Tomlin AS | | 2022 |
| Bjørgaas Eiendom AS | Real estate | 1995 |
| Bjørn Salte Holding AS | Professional & scientific | 2020 |
| Bjørndalen Forretningseiendom AS | Real estate | 2012 |
| Bjørndalen Landhandleri AS | Real estate | 2017 |
| Bjørnetun Holding AS | Financial services | 2005 |
| Bjørns Trafikkskole Safedriver AS | Education | 2013 |
| Bjørnsen Eiendom AS | Real estate | 1986 |
| Bjørnsen Holding AS | Manufacturing | 1966 |
| Bjørnson AS | Professional & scientific | 2001 |
| Bjørseth Pettersen AS | Professional & scientific | 2022 |
| BK Consulting AS | Professional & scientific | 2007 |
| BKH Kaa AS | | 2021 |
| Bkon Holding AS | | 2025 |
| Blaarygg AS | Financial services | 2009 |
| Black Swan Holding AS | Financial services | 2010 |
| Blankenberg Invest AS | | 2023 |
| Blepharo Øyeklinikk AS | Health & social care | 2009 |
| Blest AS | Professional & scientific | 1997 |
| Blind Spot Films AS | Information & communication | 2019 |
| Blir AS | Administrative & support | 2025 |
| Blir Eiendom AS | Real estate | 2025 |
| Bloch Sandved AS | Real estate | 2017 |
| Blomst Viola AS | Wholesale & retail | 2015 |
| Blomstersentralen Rogaland AS | Real estate | 1993 |
| Blot Medical AS | Wholesale & retail | 2025 |
| Bluchip AS | Information & communication | 2019 |
| Blue House AS | Professional & scientific | 2010 |
| Blue Logic AS | Professional & scientific | 2010 |
| Bluecrows Nuf | Wholesale & retail | 2021 |
| Blueday Technology AS | Manufacturing | 2012 |
| Blåfrost AS | | 2022 |
| Blåhval AS | Professional & scientific | 2022 |
| Blåhval Invest AS | Professional & scientific | 2024 |
| Blåsenborg Holding AS | Real estate | 2007 |
| Blåtun AS | Agriculture & fishing | 2025 |
| BM Ims Holding AS | | 2024 |
| Bme Holding AS | Wholesale & retail | 2006 |
| BMG Eiendom & Ressurs AS | Real estate | 2011 |
| BN Gull AS | Wholesale & retail | 2017 |
| BN Investering AS | | 2022 |
| Bo Engros AS | Wholesale & retail | 1987 |
| Board Holding AS | | 2026 |
| Bob Invest AS | Financial services | 2010 |
| Boc Holding AS | Real estate | 2009 |
| Boca AS | Real estate | 2011 |
| Boco AS | Wholesale & retail | 2002 |
| Boeing Company | Manufacturing | 1995 |
| Bogafjell Vest Utvikling AS | Real estate | 2014 |
| Bogafjellbakken Naturbarnehage SA | Education | 2002 |
| Boganesveien 114 AS. | Real estate | 1982 |
| Boganesveien 122 AS | Real estate | 2018 |
| Bogdan Maler AS | Construction | 2022 |
| Bogi AS | Information & communication | 2018 |
| Boiten Computer Science AS | Information & communication | 2016 |
| Boja AS | Real estate | 1992 |
| Bokneberg Invest AS | Financial services | 2019 |
| Bolig AS | Real estate | 2017 |
| Boligrenovering 1 AS | Construction | 2018 |
| Bolme Andås Holding AS | | 2026 |