| Bertoni Norway AS | Wholesale & retail | 1997 |
| Bertram Auto Kvikk AS | Other services | 1998 |
| Bertram Bil AS | Other services | 2002 |
| Bertramjordet Medisinske Senter AS | Health & social care | 2012 |
| Bery Partners AS | | 2020 |
| Bes Invest AS | Real estate | 2015 |
| Besa Capital AS | Manufacturing | 2015 |
| Besab AB Nuf | Construction | 2013 |
| Besari AS | Information & communication | 2020 |
| Besisahar AS | Real estate | 2022 |
| Beslag Design AS | Wholesale & retail | 2013 |
| Beslag Og Firkant Expressen AS | Construction | 2025 |
| Bespoke Financial Solutions Nuf | Professional & scientific | 2017 |
| Besseggen Arkitekter AS | Professional & scientific | 2020 |
| Besseggen Holding AS | Professional & scientific | 2020 |
| Besserud Eiendom AS | Real estate | 2015 |
| Besserud Invest Da | Real estate | 1996 |
| Besserud Prosjekt AS | Real estate | 1989 |
| Bessie Holding AS | Professional & scientific | 2021 |
| Besson AS | Administrative & support | 2019 |
| Bessworks AS | Professional & scientific | 2025 |
| Best Barnehage AS | Education | 2016 |
| Best Bay Holding AS | Wholesale & retail | 1941 |
| Best Bay Norway AS | Transport & logistics | 1990 |
| Best Claims AS | Financial services | 2007 |
| Best Coach AS | Professional & scientific | 2014 |
| Best Connection AS | Wholesale & retail | 2024 |
| Best Eiendommer AS | Real estate | 2015 |
| Best Emballasje AS | Wholesale & retail | 2000 |
| Best Engineering AS | Professional & scientific | 2025 |
| Best Flytteservice Og Transport AS | Transport & logistics | 2025 |
| Best Helse AS | Health & social care | 2008 |
| Best I Høyden AS | Construction | 2024 |
| Best in Test Nuf | Information & communication | 2009 |
| Best in West AS | | 2020 |
| Best Management AS | Professional & scientific | 2015 |
| Best Norge Bygg AS | Construction | 2016 |
| Best of Breed AS | Information & communication | 2003 |
| Best of Breed Holding AS | Information & communication | 2006 |
| Best of Music AS | Wholesale & retail | 2003 |
| Best of You AS | Other services | 2015 |
| Best På Salg AS | Administrative & support | 2019 |
| Best Renhold Kate AS | Administrative & support | 2026 |
| Best Shape AS | Health & social care | 2017 |
| Best Show AS | Arts & recreation | 2012 |
| Best Times AS | | 2024 |
| Best Trafikkskole AS | Education | 2010 |
| Best Underholdning AS | Arts & recreation | 2016 |
| Best.No AS | Administrative & support | 2014 |
| Bestair Norway AS | Wholesale & retail | 2014 |
| Bestdrive Norway AS | Wholesale & retail | 1993 |
| Beste Folka AS | | 2018 |
| Beste Negler AS | Other services | 2018 |
| Beste Negler Linderud AS | Other services | 2025 |
| Bestebudet.No Da | Wholesale & retail | 2006 |
| Bestekompis AS | Hospitality | 2020 |
| Bestetøffen AS | | 2023 |
| Bestilt AS | Information & communication | 2023 |
| Bestinn AS | Professional & scientific | 2024 |
| Bestseller AS | Wholesale & retail | 1987 |
| Bestseller Stores Norway AS | Wholesale & retail | 1994 |
| Bestsound AS | Wholesale & retail | 2020 |
| Bestum Advisors AS | Professional & scientific | 2015 |
| Bestum Aksjesameie Da | | 2017 |
| Bestum Invest AS | Hospitality | 2005 |
| Bestumtunet AS | Real estate | 2022 |
| Bestun Holding AS | | 2025 |
| Bestvind AS | Wholesale & retail | 2024 |
| Bestå Holding AS | | 2026 |
| Beta Arkitektur AS | Professional & scientific | 2013 |
| Beta Corporation Holding AS | Financial services | 2018 |
| Beta Mobility AS | Professional & scientific | 2021 |
| Beta Mobility Consulting AS | Professional & scientific | 2021 |
| Beta Prosjekt AS | Professional & scientific | 2025 |
| Beta Trade AS | Financial services | 2012 |
| Beta VVS AS | Construction | 2019 |
| Betal.No AS | Information & communication | 2021 |
| Betasuppe AS | Education | 2022 |
| Beth's Beauty Holding AS | Other services | 2019 |
| Beths Beauty Center AS | Other services | 2007 |
| Beths Medispa AS | Health & social care | 2012 |
| Betnik AS | Real estate | 2010 |
| Beto Bygg AS | Construction | 1993 |
| Beto Bygg BB AS | | 2024 |
| Beto-Tech AS | Professional & scientific | 2021 |
| Betoform AS | Construction | 2025 |
| Betoha AS | | 2026 |
| Betokem AS | Real estate | 2022 |
| Betong AS | Real estate | 2016 |
| Betong Film AS | Information & communication | 2020 |
| BETONG1 AS | Hospitality | 2022 |
| Betongarbeid AS | Construction | 2013 |
| Betongconsult Eiendom AS | Real estate | 1993 |
| Betongmiljø AS | Administrative & support | 2018 |
| Betongoverflater AS | Construction | 2021 |
| Betongpark AS | Construction | 2012 |
| Betongpark Solutions AS | Professional & scientific | 2013 |
| Betongverk AS | Construction | 2022 |
| Betonmast AS | Construction | 2018 |
| Betonmast Eiendom AS | Real estate | 2013 |