| 3DM Simtek AS | Professional & scientific | 2016 |
| 4056 Holding AS | | 2025 |
| 4HOLDINGS AS | | 2024 |
| 505 Holding AS | Wholesale & retail | 2021 |
| A R Incoronato AS | Real estate | 2016 |
| A Sandvik Holding AS | Financial services | 2016 |
| A. Egeland Invest AS | | 2022 |
| A.S. Holding AS | Professional & scientific | 2014 |
| Aasland Vekst AS | | 2024 |
| Abbi AS | Administrative & support | 2016 |
| Abh Holding AS | Financial services | 2005 |
| Acclivia Holding AS | | 2025 |
| Advanced Tooling AS | Wholesale & retail | 2022 |
| Afs Invest AS | | 2005 |
| Aggreko Norway AS | Administrative & support | 1976 |
| Aida's Boulangerie AS | Wholesale & retail | 2022 |
| Aj Offshore AS | Professional & scientific | 2011 |
| Alice Johannessen AS | Wholesale & retail | 2013 |
| Alius Hjemservice AS | Administrative & support | 2016 |
| Alles Transport Og Budfirma AS | Transport & logistics | 1998 |
| Alto Holding AS | Real estate | 2005 |
| Alto Invest AS | Real estate | 2004 |
| Ambito Holding AS | Construction | 2024 |
| Andre Flåte Olsen AS | Wholesale & retail | 2025 |
| Anlegg Og Marine Eiendom AS | Real estate | 1990 |
| Anlegg Og Marine Holding AS | Manufacturing | 2022 |
| Anlegg Og Marine Service AS | Manufacturing | 1997 |
| Ans Agilityshop.No | Wholesale & retail | 2006 |
| Ansihol AS | | 2023 |
| Aqua Cutter AS | Wholesale & retail | 2016 |
| Ardyne Tecnologies Limited Nuf | Administrative & support | 2016 |
| Arepa Norge AS | Professional & scientific | 2023 |
| Arnøy Consult AS | Professional & scientific | 2021 |
| Arnøy Invest AS | Real estate | 2005 |
| Asap Industrier AS | Wholesale & retail | 2011 |
| Asaso Holding AS | Real estate | 2021 |
| Asco Holdings Norge AS | Transport & logistics | 2013 |
| Asco Norge AS | Transport & logistics | 1994 |
| Asolution AS | Professional & scientific | 2007 |
| Assetly AS | Information & communication | 2025 |
| Autonomous Intervention AS | Mining & quarrying | 2025 |
| Avinex AS | Professional & scientific | 2007 |
| B Log Invest AS | | 2022 |
| Baardsen Invest AS | Real estate | 1984 |
| Bach Mill Consultants Limited Nuf | Professional & scientific | 2024 |
| Baker Hughes Inteq | Administrative & support | 2004 |
| Baker Hughes Norge AS | Mining & quarrying | 1998 |
| Baker Petrolite Ltd | | 1995 |
| Bamboo Holding AS | Administrative & support | 2018 |
| Batterisentralen Da | Wholesale & retail | 1994 |
| Bearbay AS | Professional & scientific | 2021 |
| Bendix AS | Wholesale & retail | 1999 |
| Benjamin Chin AS | Wholesale & retail | 2020 |
| Biceps Eiendom AS | Real estate | 2004 |
| Birk Utvikling AS | Real estate | 2019 |
| Bjarkøy Brygge AS | Hospitality | 2013 |
| Bjerva AS | Real estate | 2005 |
| BK Bygg AS | Real estate | 2010 |
| Blaavand AS | Wholesale & retail | 2015 |
| Blue Manta AS | Professional & scientific | 2015 |
| Bluelux AS | Professional & scientific | 2026 |
| Boden Boden AS | Professional & scientific | 2024 |
| Bookatrailer AS | Administrative & support | 2018 |
| Borke AS | Real estate | 2016 |
| Brai AS | Real estate | 2013 |
| Brandslien Kjær Invest AS | | 2026 |
| BRM Invest AS | Professional & scientific | 2025 |
| Buke Invest AS | Financial services | 2013 |
| Butikkform AS | Professional & scientific | 2015 |
| Byggerede AS | | 2024 |
| Byggmester Skogstad AS | Construction | 2020 |
| Campos Invest AS | Professional & scientific | 2026 |
| Carabelli Holding AS | Real estate | 2018 |
| Carlabs AS | Information & communication | 2026 |
| Carmar AS | Professional & scientific | 2006 |
| Castolin Trio AS | Manufacturing | 1986 |
| Catering Apettit Bistro AS | Hospitality | 2022 |
| CB Eiendom AS | Real estate | 2017 |
| CB Ogne Holding AS | | 2021 |
| CB Tananger AS | Other services | 2017 |
| Celestide AS | Information & communication | 2026 |
| Celestra Holding AS | | 2026 |
| Celita AS | Agriculture & fishing | 2003 |
| Centraflow AS | Professional & scientific | 2015 |
| Chill Engineering Ltd | Professional & scientific | 2020 |
| Cocoa Lotus Unlimited AS | Education | 2018 |
| Commissioning Partner AS | Professional & scientific | 1996 |
| Conass Holding AS | | 2025 |
| Conocophillips International Well Response Company AS | Professional & scientific | 2011 |
| Conocophillips Norge Nuf | Mining & quarrying | 1995 |
| Conocophillips Skandinavia AS | Mining & quarrying | 1964 |
| Conops AS | Professional & scientific | 2024 |
| Consolid AS | Professional & scientific | 2016 |
| Control Cutter AS | Manufacturing | 2010 |
| Control Cutter Rental AS | Manufacturing | 2018 |
| Conundrum Holding AS | | 2023 |
| Core 20 AS | Information & communication | 2022 |
| Coretrax Global Limited Norway Nuf | Administrative & support | 2021 |
| Corrosion Solutions Norway AS | Wholesale & retail | 2015 |
| CTR Energy AS | Professional & scientific | 2022 |