| Bryn Bilutleie AS | Administrative & support | 2007 |
| Bryn Bilvask AS | Other services | 2022 |
| Bryn Bilvask Og Bilpleie Da | Other services | 2012 |
| Bryn Boligselskap AS | Real estate | 2017 |
| Bryn Boligtomt 2 AS | Real estate | 2017 |
| Bryn Bygg AS | Construction | 2011 |
| Bryn Eiendom AS | Real estate | 2019 |
| Bryn Finans AS | Administrative & support | 1990 |
| Bryn Helsekost AS | Wholesale & retail | 2025 |
| Bryn Invest AS | Real estate | 1993 |
| Bryn Lager AS | Real estate | 2020 |
| Bryn Naturmedisin Og Hudpleie AS | Health & social care | 2013 |
| Bryn Næringspark AS | Real estate | 1922 |
| Bryn Pt-Studio AS | Education | 2017 |
| Bryn Senter Legekontor Da | Health & social care | 2010 |
| Bryn Servering AS | Hospitality | 2011 |
| Bryn Service AS | Administrative & support | 2018 |
| Bryn Trafikkskole AS | Education | 1989 |
| Bryn Trykkservice AS | Manufacturing | 1976 |
| Bryn Ur Og Smykker AS | Wholesale & retail | 2003 |
| Bryne Bankbygg AS | Real estate | 2021 |
| Bryne Industripark AS | Real estate | 2005 |
| Bryne INDUSTRIPARK2 AS | Real estate | 2016 |
| Bryne Sentrum Utvikling AS | Real estate | 2023 |
| Bryne Sentrumseiendom AS | Real estate | 2022 |
| Brynhildsvoll AS | Professional & scientific | 2020 |
| Bryni Holding AS | | 2023 |
| Brynklinikken AS | Health & social care | 2012 |
| Brynsalléen 1 AS | | 2026 |
| Brynsalléen 2 AS | Real estate | 2019 |
| Brynseng Eiendom AS | Real estate | 2012 |
| Brynseng Torg AS | Real estate | 2022 |
| Brynsengfaret 4 Og 6 AS | Real estate | 2013 |
| Brynsengfaret 6CD AS | Real estate | 2019 |
| Brynsenglegene AS | Health & social care | 2000 |
| Brynsengveien 10 AS | Real estate | 2022 |
| Brynsengveien 10 Holding AS | Financial services | 2021 |
| Brynsengveien 2 AS | Real estate | 2005 |
| Brynsløkken J4 AS | Real estate | 2018 |
| Brynsveien 1 AS | Real estate | 2017 |
| Brynsveien 11/13 Eiendom AS | Real estate | 2007 |
| Brynsveien 132/134 AS | Real estate | 2005 |
| Brynsveien 2-4 AS | Real estate | 1953 |
| Brynsveien 3 B Ans | Real estate | 1986 |
| Brynsveien 3 Eiendom AS | Real estate | 2007 |
| Brynsveien 3A Ans | Real estate | 1986 |
| Brynsveien 5 AS | Real estate | 1987 |
| Brynsveien 6 Og 12 AS | Real estate | 2020 |
| Bråkedalen Holding AS | Construction | 2005 |
| Bråkmaker AS | Professional & scientific | 2020 |
| Brånåsparken Utvikling AS | Real estate | 2021 |
| Bråsetveien 2 AS | Real estate | 2020 |
| Bråtakollen Skog Da | Agriculture & fishing | 2007 |
| Bråtane AS | Financial services | 2009 |
| Bråtebuktveien Utbyggingsselskap SA | Water & waste | 2019 |
| Bråtehøgda AS | Financial services | 1999 |
| Bråtejordet Tomteselskap AS | Real estate | 2012 |
| Bråten Ans | Professional & scientific | 1990 |
| Bråten Barnehage SA | Education | 1995 |
| Bråthen Dagligvare AS | Wholesale & retail | 2013 |
| Bråthen Film AS | Information & communication | 2022 |
| Bråtner Eiendom AS | Real estate | 2010 |
| Bræk Seri AS | Hospitality | 2001 |
| Brækhus Advokatfirma AS | Professional & scientific | 2024 |
| Brækhus Holding 1 AS | Professional & scientific | 1999 |
| Brækhus Holding 2 AS | | 2026 |
| Brække Festeselskap 1 B AS | Real estate | 2005 |
| Brække Festeselskap I AS | Real estate | 2012 |
| Brække Festeselskap II AS | Real estate | 2012 |
| Brække Festeselskap II Da | Real estate | 1995 |
| Brække Festeselskap III AS | Real estate | 2012 |
| Brække Festeselskap IV AS | Real estate | 2012 |
| Brække Festeselskap IV Da | Real estate | 1995 |
| Brække Festeselskap Vi AS | Real estate | 2013 |
| Brække Festeselskap Vii AS | Real estate | 2013 |
| Bræks Holding AS | Wholesale & retail | 2001 |
| Brænd Ellefsen AS | Arts & recreation | 1995 |
| Brænna Holding AS | | 2026 |
| Brød & Melk AS | | 2026 |
| Brød & Melk Eidsvoll AS | Real estate | 2004 |
| Brød & Melk Jessheim AS | Real estate | 2004 |
| Brød & Melk Lillestrøm AS | Real estate | 2005 |
| Brød & Melk Nannestad AS | Real estate | 1995 |
| Brød Bakerne AS | Manufacturing | 2007 |
| Brød Og Propell AS | Professional & scientific | 2015 |
| Brødfabrikken Fus Barnehage AS | Education | 2019 |
| Brødr. Andreassen Oslo AS | | 1977 |
| Brødr. Bache AS | Wholesale & retail | 1998 |
| Brødrene Alnes AS | Professional & scientific | 2023 |
| Brødrene Andreassen AS | Wholesale & retail | 1990 |
| Brødrene BM AS | Construction | 2025 |
| Brødrene Brenden AS | Construction | 1988 |
| Brødrene Bygg Service AS | Construction | 2024 |
| Brødrene Bygg&Maskin AS | Construction | 2025 |
| Brødrene Eie Da | Real estate | 2018 |
| Brødrene Eik Holding AS | | 2024 |
| Brødrene Evensen Eiendomsselskap AS | Real estate | 1971 |
| Brødrene Furst AS | Wholesale & retail | 1966 |
| Brødrene Hals AS | Financial services | 1929 |
| Brødrene Hammerstad AS | Construction | 1995 |