| &MF Holding AS | Manufacturing | 2020 |
| 22ND Century by Design Europe AS | | 2025 |
| 3XA Invest AS | Real estate | 2020 |
| A&B Holding Group AS | Construction | 2013 |
| Aas & Nordal Eiendom AS | Real estate | 2019 |
| Aas & Nordal Holding AS | Professional & scientific | 2018 |
| Aas & Nordal Utvikling AS | Real estate | 2019 |
| Aasheim Elektro AS | Construction | 2020 |
| Aasheim Elektro AS | Construction | 2026 |
| Aeronautic AS | Professional & scientific | 2026 |
| Agvae Holding AS | | 2022 |
| Airpet AS | Other services | 2024 |
| Akershus Sikkerhet Og Service AS | Professional & scientific | 2017 |
| Aktiva Regnskap AS | Professional & scientific | 1986 |
| Akw Eiendom AS | Real estate | 2020 |
| Akw Holding AS | Construction | 2011 |
| Albatros Taxi AS | Transport & logistics | 2023 |
| Allmenningsdrift Romerike SA | Real estate | 2009 |
| Almenningsbygg AS | Real estate | 1974 |
| Almenningssaga AS | | 2020 |
| Alves AS | Transport & logistics | 2022 |
| Amber Beauty AS | Other services | 1999 |
| An Bygg AS | Construction | 2011 |
| Anita & Anne Ans Gaver Hobby Leker | Wholesale & retail | 1989 |
| Annum Eiendom AS | Real estate | 2025 |
| Appsonite Music and Apps AS | Information & communication | 2012 |
| Arben AS | Construction | 2025 |
| Arben Drift AS | Construction | 2023 |
| Arctic Select AS | Wholesale & retail | 2026 |
| Areol Innredninger AS | Wholesale & retail | 1985 |
| Artur Bygg Og Eiendom 1 AS | Construction | 2020 |
| Autosenter Stefan AS | Wholesale & retail | 2022 |
| Avtaltid.No AS | Information & communication | 2011 |
| Bane & Anlegg AS | Construction | 2012 |
| Barato AS | | 2011 |
| Bjerke Almenning AS | Agriculture & fishing | 2020 |
| Bjerke Almenning KS | Real estate | 2020 |
| Bjerke Invest AS | | 2024 |
| Bjerke Skisenter AS | Arts & recreation | 2025 |
| Bjerkestuen Eiendom AS | Real estate | 2022 |
| Bjerkestuen Teknikk AS | Wholesale & retail | 2013 |
| Bjerkestuen Transport AS | Transport & logistics | 1995 |
| Bjerkeværing Holding AS | | 2016 |
| BKC Eiendom AS | Real estate | 2023 |
| BKC Holding AS | Real estate | 2025 |
| Bransjepartner AS | Manufacturing | 2020 |
| Bredesen Transport & Montering AS | Transport & logistics | 1996 |
| Breen Eiendom AS | Construction | 2014 |
| Breen Holding AS | Construction | 2005 |
| Breenenga Fus Barnehage AS | Education | 2018 |
| Brombrom AS | Wholesale & retail | 2024 |
| Brustadkollen AS | Real estate | 2019 |
| Bygg Baltic AS | Construction | 2022 |
| BYGG2YOU AS | Administrative & support | 2020 |
| Byggmester Askeland Moqvist AS | Construction | 2016 |
| Byggmester Frank Aasheim AS | Construction | 2013 |
| Bård a Holter AS | Construction | 2014 |
| Bård Holter Holding AS | Financial services | 2016 |
| Bård Holter Invest AS | Real estate | 2016 |
| Bækk AS | | 2020 |
| Bækken Invest AS | Construction | 2018 |
| Carl H Breen AS | Construction | 1989 |
| Carmus AS | | 2025 |
| City Bygg Og Eindom AS | Construction | 2025 |
| City Ventilasjon AS | Construction | 2017 |
| Colina Holding AS | | 2025 |
| Czarnecki Holding AS | | 2022 |
| Dagur AS | Wholesale & retail | 2025 |
| Dandelion AS | Real estate | 2005 |
| Danyal Razzaq Holding AS | | 2022 |
| Daras Bygg AS | Construction | 2025 |
| Decobyggeservice AS | Construction | 2019 |
| DS Byggnadsrenovering AB Nuf | Construction | 2022 |
| DWT AS | Transport & logistics | 2024 |
| Dyreglad AS | Other services | 2012 |
| Easydoesit Da | Information & communication | 2024 |
| Eidsvoll Almenning Holding AS | Wholesale & retail | 2019 |
| Eman Invest AS | Construction | 2023 |
| Embre Park & Anlegg AS | Construction | 2023 |
| Emo Hus AS | Construction | 2020 |
| Engelstad Transport & Maskin AS | Transport & logistics | 2023 |
| Espikon AS | Wholesale & retail | 2026 |
| Explorador De Viajes Da | Arts & recreation | 2021 |
| Faannessen Invest AS | | 2019 |
| Finskud Holding AS | | 2024 |
| Fitnesspoint Maura Treningssenter AS | Arts & recreation | 2025 |
| Fjansen Holding AS | | 2026 |
| Flight Simulations Norway Ans | Education | 1991 |
| Flyttevask Øst AS | Administrative & support | 2021 |
| Fotograf Espen Solli AS | Professional & scientific | 2015 |
| Frank Aasheim Invest AS | Professional & scientific | 2013 |
| Frank Ecos AS | Professional & scientific | 2016 |
| Free Enter AS | Administrative & support | 2014 |
| Gardermoen Catering AS | Hospitality | 2016 |
| Gardermoen Hunde- Og Kattehotell AS | Other services | 2010 |
| Gardermoen Nord Næringspark AS | Real estate | 2007 |
| Gardermoen Snøservice AS | Construction | 2026 |
| Georapport AS | Professional & scientific | 2023 |
| Gjerdrum Almenning AS | | 2020 |
| Gjerdrum Almenning KS | | 2020 |