| BPB Turnstone Invest AS | | 2025 |
| Bpe Holding AS | | 2026 |
| BPL Diagnostics AS | Wholesale & retail | 2012 |
| BPM AS | Professional & scientific | 2025 |
| Bponths AS | | 2024 |
| BPS Consulting AS | Information & communication | 2009 |
| BPS Invest AS | Real estate | 2023 |
| Bpu Management AS | Professional & scientific | 2005 |
| BPW Hofstad AS | Wholesale & retail | 1918 |
| BQ Holding AS | Arts & recreation | 2025 |
| BQL AS | Real estate | 2016 |
| BR Capital AS | | 2022 |
| BR Konsult AS | Professional & scientific | 2025 |
| BR Products Ans | | 1989 |
| BR Rør AS | Construction | 2026 |
| Br-Investments AS | Real estate | 2016 |
| Bra Arkitekter AS | Professional & scientific | 2021 |
| Bra Barndom AS | Health & social care | 2017 |
| Bra Bygg & Montasje AS | Construction | 2024 |
| Bra Bygg AS | Real estate | 2008 |
| Bra Form AS | Professional & scientific | 2017 |
| Bra Group AS | Professional & scientific | 2015 |
| Bra Holding AS | | 2005 |
| Bra Interiør AS | Real estate | 1991 |
| Bra Kast AS | Real estate | 2015 |
| Bra Kompis AS | Administrative & support | 2021 |
| Bra Vinduer Og at Byggprosjekt AS | Wholesale & retail | 2017 |
| Braa Holding AS | Real estate | 2023 |
| Braa Hytta AS | Construction | 2020 |
| Braa Invest AS | Real estate | 2019 |
| Braaains AS | Information & communication | 2018 |
| Braadland Consulting AS | Information & communication | 2024 |
| Braadland Holding AS | | 2025 |
| Braadland Invest AS | Professional & scientific | 2021 |
| Braarb AS | Professional & scientific | 2017 |
| Braarud Eiendom AS | Real estate | 2024 |
| Braasport AS | Wholesale & retail | 2017 |
| Braastad Gruppen AS | Real estate | 2005 |
| Braastad Holding AS | | 2025 |
| Braastad Kapital AS | | 2020 |
| Braatens Byggfornyelse AS | Construction | 2002 |
| Braatens Eiendomsutvikling AS | Real estate | 2021 |
| Braatevaag AS | Education | 2014 |
| Braathen & Bruun Eiendomspleie AS | Real estate | 2025 |
| Braathen Asset Group AS | Financial services | 2016 |
| Braathen Eiendom Alna AS | Real estate | 2016 |
| Braathen Eiendom Barcode AS | Real estate | 2008 |
| Braathen Eiendom Flyt AS | Real estate | 2017 |
| Braathen Eiendom Forvaltning AS | Real estate | 1989 |
| Braathen Eiendom Holding AS | Real estate | 2006 |
| Braathen Eiendom Investment AS | Real estate | 1980 |
| Braathen Eiendom Vika AS | Real estate | 2009 |
| Braathen Invest AS | | 2018 |
| Brabak AS | | 2021 |
| Brabo II AS | Professional & scientific | 2009 |
| Brabok AS | Information & communication | 2011 |
| Brabra AS | Professional & scientific | 2024 |
| Brabros Holding AS | Real estate | 2019 |
| Bracom AS | Construction | 2019 |
| Braconda AS | Administrative & support | 2003 |
| Bradley Capital AS | | 2020 |
| Brafelt Consulting AS | Information & communication | 2023 |
| Brafin AS | Real estate | 2014 |
| Braganza AS | Professional & scientific | 2013 |
| Brage Arkitekter AS | Professional & scientific | 2025 |
| Brage Bolig AS | Real estate | 2018 |
| Brage Gulbrandsen AS | | 2025 |
| Brage Invest AS | | 1987 |
| Brage Jahren Holding AS | | 2022 |
| Brage Prosjekt AS | Professional & scientific | 2026 |
| Bragefonden AS | Financial services | 2024 |
| Bragegården AS | Real estate | 2012 |
| Bragen Granholt Holding AS | Financial services | 2018 |
| Bragernes City AS | Real estate | 2023 |
| Bragernes Eiendom AS | Real estate | 2006 |
| Bragernes Eiendomsinvest AS | Real estate | 2019 |
| Bragernes Invest AS | Real estate | 2012 |
| Bragernes Park AS | Real estate | 2022 |
| Bragernes Park Holding AS | Real estate | 2022 |
| Bragernes Strand Barnehage AS | Education | 2007 |
| Bragernes Strand Eiendom AS | Real estate | 2022 |
| Bragernes Torg 2A Ot AS | Real estate | 2017 |
| Brageveien 2 Eiendom 1 Ans | Real estate | 2014 |
| Brageveien 2 Eiendom 2 Ans | Real estate | 2014 |
| Brageveien 2 Eiendom 3 Ans | Real estate | 2014 |
| Brageveien 2 Eiendom 4 Ans | Real estate | 2014 |
| Brageveien Studio AS | Real estate | 2021 |
| Braha AS | Information & communication | 2019 |
| Brahde AS | Financial services | 2005 |
| Brail AS | Information & communication | 2026 |
| Brain and Heart Invest AS | Education | 2005 |
| Brain Health Management Da | Education | 2025 |
| Brain Integration Systems AS | Professional & scientific | 1999 |
| Brain Twin AS | Professional & scientific | 2024 |
| Brainfog AS | Arts & recreation | 2025 |
| Brainpower Holding AS | | 2022 |
| Brainstuff AS | Financial services | 2017 |
| Brainwave AS | Professional & scientific | 2017 |
| Brainwells AS | Education | 2009 |
| Brainwidesolutions AS | Professional & scientific | 2018 |