| 1071 Concern AS | Information & communication | 2019 |
| 1071 Consult AS | Information & communication | 2019 |
| 1340 Apex AS | Professional & scientific | 2026 |
| A-1 Consulting AS | Professional & scientific | 2010 |
| Aandstad Consulting AS | Professional & scientific | 2017 |
| Aandstad Holding AS | Financial services | 2021 |
| Acas Regnskap AS | Professional & scientific | 2022 |
| Actionhub Nordic Holding AS | Information & communication | 2023 |
| Actra Group AS | Wholesale & retail | 2025 |
| Akershus Elektroservice AS | Construction | 2023 |
| Akershus Landskap AS | Administrative & support | 2020 |
| Akershus VVS AS | Construction | 2001 |
| Aktiv Utviklingspartner AS | Real estate | 1998 |
| All Group AS | | 2025 |
| All Things Digital AS | Information & communication | 2024 |
| Allsidige VVS AS | Construction | 1995 |
| Alt-Gruppen AS | Real estate | 2015 |
| Analytika Ventures V AS | Professional & scientific | 2019 |
| Anders Omsted Holding AS | Manufacturing | 2005 |
| Ank AS | Wholesale & retail | 2018 |
| Ank Service AS | Construction | 2020 |
| Aquila AS | Professional & scientific | 1996 |
| Arjun Invest AS | | 2017 |
| Arkel Romerike AS | Construction | 2002 |
| Arom Bolig AS | Real estate | 2020 |
| Arom Eiendom AS | Real estate | 2009 |
| Arom Prosjekt AS | Real estate | 2012 |
| Arvakersheim AS | Real estate | 2019 |
| AS Gårdfinans | Wholesale & retail | 1916 |
| AS Johnsrud & Co | Real estate | 2023 |
| Ave AS | Professional & scientific | 2025 |
| Ave Consulting AS | Professional & scientific | 2025 |
| Axi AS | Wholesale & retail | 2000 |
| B.J. Vedlikhold AS | Construction | 2025 |
| B.R.F Entreprenør AS | Construction | 2016 |
| Babay Service Sentralen AS | Transport & logistics | 2021 |
| Bad-Kjøkken Og Bolig Design AS | Construction | 2015 |
| Bakkelia AS | | 2025 |
| Baltrex AS | Construction | 2022 |
| Barkenes Eiendom AS | Real estate | 2021 |
| Bawer Abbasi Holding AS | | 2026 |
| Bazo Holding AS | | 2026 |
| Bei Holding AS | Professional & scientific | 2017 |
| Beraki AS | Health & social care | 2005 |
| BFJ Holding AS | | 2023 |
| Bhold AS | Professional & scientific | 2012 |
| Bil & Bue AS | Transport & logistics | 2026 |
| Bilfleks AS | Administrative & support | 2025 |
| Bilfleks Bilsalg AS | Wholesale & retail | 2025 |
| Bipro Invest AS | | 2023 |
| Biznet AS | Construction | 2024 |
| Bjørkero Invest AS | Real estate | 2005 |
| Blond Girl Method AS | Other services | 2026 |
| BM Drift AS | Wholesale & retail | 2005 |
| BNL Holding AS | Real estate | 2010 |
| Borninski Holdings AS | | 2020 |
| Bresell Holding AS | Real estate | 2005 |
| Bruvang-Ranheim Assets AS | | 2026 |
| BS Bygg AS | Construction | 2013 |
| BS Invest AS | | 2025 |
| Bygg Proff 5 AS | Construction | 2012 |
| Byggproffen AS | Construction | 2022 |
| Bærekraftig Produktutvikling AS | Administrative & support | 2023 |
| CBJ Invest AS | | 2018 |
| Cisi Systems Nuf | Wholesale & retail | 2025 |
| Codico GmbH Nuf | Wholesale & retail | 2022 |
| Conex AS | Construction | 2004 |
| CRE8 Ans | Professional & scientific | 2007 |
| Dan Eriksen AS | | 2026 |
| Dan Eriksen Kran & Transport AS | Transport & logistics | 2015 |
| Dan Eriksen Kran & Transport Midlertidig AS | Transport & logistics | 2026 |
| Dance Popup AS | Arts & recreation | 2020 |
| Dann Consulting Da | Education | 2025 |
| Dekor Bygg AS | Construction | 1995 |
| Delux Tours AS | Transport & logistics | 2022 |
| Demcom AS | Administrative & support | 2016 |
| Descanso AS | Health & social care | 2021 |
| Designgruppen AS | Professional & scientific | 2019 |
| Desimal Group AS | Real estate | 2005 |
| Devinci Bil AS | Wholesale & retail | 2020 |
| Dincer AS | Real estate | 2008 |
| Dinvest AS | | 2021 |
| DR. Dyrkorn AS | Health & social care | 2022 |
| E Personal AS | Administrative & support | 2026 |
| E.Helberg AS | Information & communication | 2020 |
| Eb Konsult AS | Professional & scientific | 2015 |
| Eidhagen Holding AS | | 2026 |
| Eisi AS | Information & communication | 2023 |
| Ekab Systemservice AS | Wholesale & retail | 2002 |
| Ekely Consulting AS | Professional & scientific | 2021 |
| El-Consult AS | Professional & scientific | 2014 |
| Elverhøyveien 24 AS | Real estate | 2006 |
| Ennte AS | Wholesale & retail | 2012 |
| Entreprenør AS | Construction | 2026 |
| Erlend Krogsgård Holding AS | | 2020 |
| Esmo Holding AS | Hospitality | 2005 |
| Ev Høytrykk Og Miljø AS | Construction | 2025 |
| Evenrud Holding AS | Real estate | 2007 |
| Evimas AS | Professional & scientific | 2022 |
| Fagdekk AS | Administrative & support | 1978 |