| 2BIER AS | Agriculture & fishing | 2012 |
| 3S Invest AS | Financial services | 2017 |
| A/S Audax | Professional & scientific | 1942 |
| Abaci Invest AS | Financial services | 2001 |
| Ae H Invest AS | Real estate | 2020 |
| Ajaxsons Eftf Aktieselskab AS | Financial services | 2020 |
| Akerud AS | Construction | 2022 |
| Akhao AS | | 2021 |
| Aksjeselskapet Butikk-Eika | Real estate | 1953 |
| Alfaplan AS | Financial services | 1987 |
| Altamoda AS | Professional & scientific | 2003 |
| Altho Ocean AS | Professional & scientific | 2026 |
| Anbe Holding AS | | 2024 |
| Anders Falck Øien AS | Professional & scientific | 2017 |
| Andreas Thome AS | Professional & scientific | 2017 |
| Ankerveien 204 AS | Real estate | 2021 |
| Anna Campos AS | Education | 2024 |
| Anvern AS | | 2026 |
| Apc AS | Mining & quarrying | 2006 |
| Apertus AS | Information & communication | 1994 |
| Arbeidsvett AS | Professional & scientific | 2023 |
| Arma Bygg AS | Construction | 2015 |
| Arriba Holding AS | Wholesale & retail | 1993 |
| Asklepion AS | Health & social care | 2013 |
| Atrieflimmer AS | | 2022 |
| Aviator AS | Transport & logistics | 2015 |
| Avitas AS | Education | 2020 |
| Ax Eiendom AS | Real estate | 1990 |
| Baewert AS | Professional & scientific | 2018 |
| Bakken Vin & Gourmet AS | Wholesale & retail | 2005 |
| Bassett AS | Wholesale & retail | 2016 |
| Bear Invest AS | Professional & scientific | 2016 |
| Benphi Holding AS | | 2022 |
| Berg Active Capital AS | | 2020 |
| Bergodal AS | Administrative & support | 2004 |
| Berkshire Holding AS | Professional & scientific | 2010 |
| Berling Holding AS | | 2024 |
| Bestum Enteprenor AS | Construction | 2025 |
| Beta Re AS | Real estate | 2022 |
| Betastick AS | | 2021 |
| Bitfabrikken AS | Information & communication | 2022 |
| Blaaberget Holding AS | Real estate | 2016 |
| Bliksmark AS | Real estate | 2005 |
| Blocks AS | Information & communication | 2021 |
| Blue Horizon AS | Professional & scientific | 2005 |
| Bluestern AS | Wholesale & retail | 2017 |
| Bob Invest Holding AS | | 2021 |
| Bock-Hagen Holding AS | | 2021 |
| Bofint AS | Construction | 2025 |
| Boklisten.No AS | Wholesale & retail | 2013 |
| Bon VOYAGE1 AS | Construction | 2021 |
| Bov Invest AS | Financial services | 2015 |
| Braatastien Invest AS | Financial services | 2017 |
| Brako Consulting AS | Administrative & support | 2023 |
| Bramat AS | Information & communication | 2014 |
| Bretteville Taljer & Maskiner AS | Wholesale & retail | 1990 |
| Brinchmann Medical Invest AS | Other services | 2020 |
| Bsa 157 Holding AS | | 2023 |
| Burø Holding AS | Real estate | 2005 |
| By Hoff AS | Wholesale & retail | 2014 |
| Bygg Og Boligservice AS | Construction | 2004 |
| Byggmester R Sandnes AS | Construction | 2002 |
| Byteimagine AS | Information & communication | 2021 |
| Båtsportguiden Ans | | 1994 |
| Bærum Padel AS | Arts & recreation | 2020 |
| Bærum Rør Og Varme AS | Construction | 2017 |
| Bøgh Holmen Holding AS | | 2023 |
| Bøygard Invest AS | | 2021 |
| Cabor AS | Financial services | 2005 |
| Cakir 967 Holding AS | | 2023 |
| Calendar 2015 AS | Real estate | 2015 |
| Camiveo AS | Financial services | 2016 |
| Canima Services AS | Professional & scientific | 2005 |
| Cavelabs AS | Information & communication | 2023 |
| Ceb Holding AS | Financial services | 2005 |
| Cecilia Teigen AS | Professional & scientific | 2024 |
| CHR Farup AS | Wholesale & retail | 1964 |
| Chrisco Sport AS | Wholesale & retail | 2015 |
| Christine F. Interiørdesign AS | Professional & scientific | 2016 |
| Cikey AS | | 2017 |
| Conac AS | Professional & scientific | 2019 |
| Concito AS | | 2001 |
| Condora AS | Financial services | 2002 |
| Consulting by Sech AS | Professional & scientific | 2024 |
| Conus AS | Real estate | 2005 |
| Cowedo AS | Information & communication | 2014 |
| CPW AS | Real estate | 2019 |
| Cray Cray Holding AS | | 2019 |
| Crecco Management AS | Professional & scientific | 2019 |
| Cronos AS | Financial services | 2013 |
| Cthulhu AS | Information & communication | 2019 |
| D+T Barbo AS | | 2021 |
| Daniel Stock Invest AS | Real estate | 2021 |
| DC Soft AS | Information & communication | 2022 |
| Dentalpartner 1 AS | Wholesale & retail | 2018 |
| Derby Holding AS | | 2022 |
| Desarrollo Eiendom AS | Real estate | 1999 |
| Digital Dataservice AS | Information & communication | 2020 |
| Digna Eiendom AS | Real estate | 2024 |
| Dignia Eiendom AS | Real estate | 2019 |