| Bedriftskommunikasjon AS | Information & communication | 2020 |
| Bedriftskonsulentene Ans | Professional & scientific | 2006 |
| Bedriftsmeglerne AS | Professional & scientific | 2025 |
| Bedriftsstruktur AS | Transport & logistics | 1986 |
| Bedriftstrykkeriet AS | Manufacturing | 1974 |
| Bedriftsvegen 27 AS | Real estate | 1983 |
| Bedriftsvegen 72 AS | Real estate | 2017 |
| Bedriftsvegen 76 AS | Real estate | 2017 |
| Bedriftsvegen Invest AS | Real estate | 2021 |
| Bedriftsveien 108 AS | Real estate | 1986 |
| Bedriftsveien 114 AS | Real estate | 2011 |
| Bedriftsyoga.No AS | Education | 2018 |
| Bedriftsøkonomisk Institutt AS | Professional & scientific | 1943 |
| Bedrill AS | Real estate | 2000 |
| Bedrock Invest AS | | 2025 |
| Bedtime AS | Wholesale & retail | 1997 |
| Beechwood Consulting AS | Professional & scientific | 2018 |
| Beecom Da | Information & communication | 2006 |
| Beefsteak AS | Manufacturing | 2025 |
| Beefutures Holding AS | Agriculture & fishing | 2019 |
| Beegreen Ans | Agriculture & fishing | 2017 |
| Beehive Consultants AS | Professional & scientific | 2024 |
| Beeline AS | Financial services | 2013 |
| Beep Gruppen AS | Real estate | 2017 |
| Beeplan AS | Professional & scientific | 2025 |
| Beer & Bakke Da | Wholesale & retail | 2023 |
| Beer Enthusiast AS | Wholesale & retail | 2010 |
| Beer Flag AS | Manufacturing | 2019 |
| Beer Wizard Holding AS | Hospitality | 2024 |
| Beerbox AS | Professional & scientific | 2014 |
| Beerski AS | Wholesale & retail | 2020 |
| Beest Software AS | Information & communication | 2015 |
| Beetle Invest AS | | 2023 |
| Beezewax Ans | Arts & recreation | 2001 |
| Beffen Invest AS | | 2025 |
| Before Noon AS | Real estate | 2023 |
| Beforefrances Da | Arts & recreation | 2023 |
| Beforeigners Production AS | Information & communication | 2018 |
| Beg Invest AS | Real estate | 2009 |
| BEG4HELP AS | Professional & scientific | 2025 |
| Begby Senter AS | Real estate | 1996 |
| Begeistringsjeger Holding AS | Financial services | 2016 |
| Beggs AS | Real estate | 2021 |
| Begonia Invest AS | Real estate | 2005 |
| Beh AS | Real estate | 2013 |
| Beha Norway AS | Wholesale & retail | 2008 |
| Behagleie AS | Administrative & support | 2023 |
| Behalf AS | Information & communication | 2016 |
| Behalf Invest 2022 AS | Real estate | 2022 |
| Behamy AS | Real estate | 2020 |
| Behandlerverket Løren AS | Health & social care | 2022 |
| Behandlerverket Oslo Sentrum AS | Health & social care | 2024 |
| Behansen Holding AS | | 2026 |
| Behaviorlab AS | Professional & scientific | 2020 |
| Behemoth AS | | 2026 |
| Behind Bars Consulting AS | Professional & scientific | 2017 |
| Behold Byrå AS | Professional & scientific | 2025 |
| Beholdning Holding AS | | 2026 |
| Behrendt Advisory AS | Professional & scientific | 2026 |
| Behrens AS | Real estate | 2023 |
| Behrentz Holding AS | | 2020 |
| Beia Eiendom AS | Wholesale & retail | 2008 |
| Beide Forvaltning AS | Professional & scientific | 2013 |
| Beiersdorf AS | Wholesale & retail | 1967 |
| Beijing Palace AS | Hospitality | 1994 |
| Beilu Consulting & Investment AS | Professional & scientific | 2014 |
| Bein AS | Administrative & support | 2005 |
| Bein Engineering AS | Professional & scientific | 2016 |
| Beinfisk AS | Information & communication | 2023 |
| Beinhard AS | Health & social care | 2023 |
| Beira AS | Professional & scientific | 2008 |
| Beirut Fineqi AS | Wholesale & retail | 2019 |
| Beirut Kebab Da | Hospitality | 2018 |
| Beito AS | Construction | 2012 |
| Beito Investering AS | Real estate | 2007 |
| Beitostølen AS | Real estate | 2006 |
| Beitostølen Firmahytter AS | Real estate | 2012 |
| Beitostølen Leiligheter AS | Real estate | 2010 |
| Beitostølen Ski Lodge AS | Real estate | 2007 |
| Beittech AS | Information & communication | 2025 |
| Bej Invest AS | Financial services | 2005 |
| Bejemi Holding AS | Information & communication | 2018 |
| Beka Bygg Da | Construction | 2010 |
| Beka Holding AS | Real estate | 2005 |
| Bekaert Norge AS | Wholesale & retail | 1973 |
| Bekheet Eiendom AS | Real estate | 2020 |
| Bekk Ansatte AS | | 2025 |
| Bekk AS | Financial services | 2015 |
| Bekk Consulting AS | Information & communication | 2000 |
| Bekk Consulting Holding AS | | 2025 |
| Bekk Consulting Holding I AS | | 2025 |
| Bekk Consulting Holding II AS | | 2025 |
| Bekk Consulting Holding III AS | | 2025 |
| Bekk Norway AS | Wholesale & retail | 2023 |
| Bekkefaret 1 AS | Real estate | 2020 |
| Bekkefaret Bolig 2 AS | Real estate | 2017 |
| Bekkefaret Bolig AS | Real estate | 2014 |
| Bekkefaret Bolig Holding AS | Real estate | 2017 |
| Bekkelaget Bil Og MC AS | Other services | 1985 |
| Bekkelaget Bolig AS | Real estate | 2003 |