| Bagheera Invest AS | Real estate | 2001 |
| Baghiera AS | Professional & scientific | 2024 |
| Bagle Entreprises AS | Hospitality | 2024 |
| Baglerbyen Fus Barnehage AS | Education | 2019 |
| Baglerfaret Utsikt AS | Real estate | 2020 |
| Baglergaten 2 AS | Real estate | 2008 |
| Baglergaten AS | Real estate | 2008 |
| Baglo Consulting AS | Financial services | 2018 |
| Bagman Invest AS | | 2021 |
| Bagnio AS | Wholesale & retail | 2022 |
| Bagorama Byporten AS | Wholesale & retail | 2019 |
| Bagstevold VVS AS | Construction | 2005 |
| Bahadur Eiendom AS | Real estate | 2007 |
| Bahadur Invest AS | Professional & scientific | 2015 |
| Baham AS | | 2020 |
| Bahar Invest AS | Administrative & support | 2019 |
| Bahce AS | Hospitality | 2026 |
| Bahia AS | | 2012 |
| Bahia's AS | Other services | 2000 |
| Bahm AS | Real estate | 1988 |
| Bahnhof Norge AS | Information & communication | 2003 |
| Baho Transport AS | Transport & logistics | 2023 |
| Bahr AS | Professional & scientific | 2012 |
| Bahr Leap AS | Professional & scientific | 2018 |
| Bahre Avkastning AS | | 2023 |
| Bahre Medvind AS | | 2022 |
| Bahrebra AS | Real estate | 1988 |
| Bai Holding AS | Education | 2004 |
| Baia Invest AS | Manufacturing | 2017 |
| Baia Mobility AS | Administrative & support | 2022 |
| Baijas AS | Professional & scientific | 1997 |
| Bailli AS | | 2022 |
| Bailli Skog AS | | 2025 |
| Bain & Company Norway AS | Professional & scientific | 2007 |
| Bain Capital (Norway) Nuf | Professional & scientific | 2022 |
| Bains Way AS | | 2026 |
| Baj Eiendom AS | Real estate | 2003 |
| Baj Investment AS | | 2024 |
| Bajas Invest AS | | 2020 |
| Bajazzo AS | Real estate | 2000 |
| Bajgora Gruppen AS | Information & communication | 2025 |
| Bajo Eiendom AS | Real estate | 1995 |
| Bajwa Invest AS | Hospitality | 2023 |
| Bak AS | | 2025 |
| Bakarah Torg AS | Transport & logistics | 2015 |
| Bakd AS | Manufacturing | 2026 |
| Bake Invest AS | | 2020 |
| Bake'N Go AS | Information & communication | 2017 |
| Bakehuset AS | Manufacturing | 1930 |
| Bakelittfabrikken Holding AS | Real estate | 1946 |
| Baker Kunstforvaltning AS | | 2025 |
| Baker Nordby AS | Wholesale & retail | 2013 |
| Baker Tilly Grimsrud & Co. Ans | Professional & scientific | 1958 |
| Baker World Travelinformation Ans | Administrative & support | 1991 |
| Bakeri Mando AS | Manufacturing | 2024 |
| Bakeri Og Restaurantrenhold AS | Administrative & support | 2019 |
| Bakeri Rådhuset AS | Wholesale & retail | 2014 |
| Bakeridrift Da | Wholesale & retail | 2006 |
| Bakerieiendom AS | Real estate | 2019 |
| Bakeriet Cupcake & Pie AS | Hospitality | 2024 |
| Bakerina AS | Manufacturing | 2023 |
| Bakerina Kafe AS | Manufacturing | 2024 |
| Bakerloo AS | Information & communication | 2015 |
| Bakglatt AS | | 2023 |
| Baki & Anderssons AS | | 2024 |
| Bakk Consulting AS | Information & communication | 2023 |
| Bakk Holding AS | | 2020 |
| Bakkar & Berg Restaurantdrift AS | Hospitality | 1985 |
| Bakke & Co AS | Information & communication | 2026 |
| Bakke & Eftf. AS | Professional & scientific | 2023 |
| Bakke Eiendom AS | Real estate | 1987 |
| Bakke Eiendom. Halden AS | Real estate | 1952 |
| Bakke Illustrations AS | Professional & scientific | 2023 |
| Bakke International AS | Professional & scientific | 2020 |
| Bakke Invest AS | | 2019 |
| Bakkeby Invest AS | Real estate | 2005 |
| Bakkehaug Holding AS | Information & communication | 2019 |
| Bakkehaugen AS | Professional & scientific | 2020 |
| Bakkehaugen Barnehage SA | Education | 2003 |
| Bakkehaugen Holding AS | Real estate | 2019 |
| Bakkehaugen Invest AS | | 2005 |
| Bakkehaugveien 15 AS | Real estate | 2018 |
| Bakkehaugveien Eiendom AS | | 2025 |
| Bakkehavn Sambyggelag AS | Households | 1955 |
| Bakkejord Group AS | Information & communication | 2005 |
| Bakkejord Holding AS | Information & communication | 2012 |
| Bakkekroa AS | Real estate | 2005 |
| Bakkekroen Restaurantdrift AS | Hospitality | 2023 |
| Bakkely Garasjelag SA | Transport & logistics | 1964 |
| Bakkely Invest AS | Real estate | 2017 |
| Bakken & Bæck AS | Information & communication | 2011 |
| Bakken & Bæck Group AS | Information & communication | 2023 |
| Bakken & Bæck Holding AS | Information & communication | 2019 |
| Bakken & Bæck Invest AS | | 2014 |
| Bakken Berg Invest AS | Financial services | 2012 |
| Bakken Hemsedal AS | Real estate | 2015 |
| Bakken Hemsedal Invest AS | Real estate | 2015 |
| Bakkene Eiendom AS | Real estate | 2024 |
| Bakkene Holding AS | Real estate | 2020 |
| Bakkens Aksjeselskap | | 2023 |