| 365ECOM AS | Wholesale & retail | 2021 |
| A & K Holding AS | Health & social care | 2005 |
| A Big Invest AS | | 2026 |
| A&B Byggmontasje AS | Construction | 2012 |
| A. Eidval AS | | 2021 |
| Abo Oppmåling AS | Professional & scientific | 2012 |
| Adam AS | Construction | 2020 |
| Ahlkvist Media AS | Professional & scientific | 2020 |
| Akvarelldesign AS | Professional & scientific | 2018 |
| Albertin AS | Professional & scientific | 2005 |
| Aleso Invest AS | | 2025 |
| Alfa Seafood AS | Manufacturing | 2015 |
| Alptec Holding AS | Financial services | 2018 |
| Always Better AS | | 2023 |
| Amalyma AS | Professional & scientific | 2023 |
| Amo 1 Holding AS | Real estate | 2016 |
| Amundsen Takst AS | Professional & scientific | 2006 |
| Ankermann AS | Transport & logistics | 2016 |
| Annes Catering AS | Hospitality | 2019 |
| Arctic Drift AS | Administrative & support | 1994 |
| Armi AS | Real estate | 2006 |
| Arnestad Eiendomsmegling AS | Real estate | 2011 |
| AS Rådgivningshuset | Professional & scientific | 2011 |
| Asker Bil & MC AS | Education | 2018 |
| Asker Bilverksted AS | Other services | 2025 |
| Asker Bruktbil AS | Wholesale & retail | 2021 |
| Asker Dekk AS | Other services | 2014 |
| Asker Group Holding AS | Wholesale & retail | 2025 |
| Asker Sveis & Mekaniske AS | Manufacturing | 1997 |
| Aurora AS | Professional & scientific | 1992 |
| Auto Kjeller AS | Other services | 2015 |
| Avacom AS | Information & communication | 2011 |
| Avantor Slemmestad AS | Real estate | 2000 |
| Avantor Slemmestad Utvikling AS | Real estate | 2017 |
| Awesomeness AS | | 2022 |
| B1 Holding AS | | 2023 |
| Badtown Nuf | Information & communication | 2011 |
| Bakkal Rortunet AS | Wholesale & retail | 2021 |
| Balanced Coconut AS | Education | 2021 |
| Barazii AS | Professional & scientific | 2025 |
| Bekkestad Eiendom AS | Real estate | 2020 |
| Bellota Holding AS | Professional & scientific | 2018 |
| Best Friends Media Da | Information & communication | 2024 |
| Best Frisør AS | Other services | 2007 |
| Bil-Guss AS | Wholesale & retail | 1978 |
| Bilhandleren AS | Wholesale & retail | 2014 |
| Binom AS | Information & communication | 2017 |
| Bjerkaas Maler Service AS | Construction | 2004 |
| Bjerkås Næring AS | Real estate | 2013 |
| Bjerkåsholmen Barnehage AS | Education | 2012 |
| Bjerkåsholmen Eiendom AS | Real estate | 2006 |
| Bjørnvold Holding AS | | 2025 |
| Black Spread Eagle AS | | 2018 |
| Blanck AS | Manufacturing | 1995 |
| BLEKKSPRUT1 AS | Real estate | 2014 |
| Blikkenslageriet AS | Construction | 2015 |
| Bma AS | Real estate | 2012 |
| Bokro Accounting AS | Professional & scientific | 2026 |
| Bokro Group AS | | 2026 |
| Boligveien 10 AS | Real estate | 2016 |
| Borgen Holdingselskap AS | | 2026 |
| Borsag AS | Construction | 2024 |
| Brevig & Hagen Holding AS | Construction | 2019 |
| Brevig Og Hagen Eiendom AS | Real estate | 2012 |
| Bruktbil Invest AS | | 2025 |
| Brødrene Brandshaug AS | Construction | 2012 |
| Bwsr Consult AS | Professional & scientific | 2024 |
| Bwsr Holding AS | Professional & scientific | 2022 |
| Bygg Og Tømmermester WH Kristensen Og Sønn AS | Construction | 2013 |
| Byggconcept AS | Professional & scientific | 1994 |
| C.Hilstrøm Holding AS | | 2021 |
| Carho AS | Administrative & support | 2024 |
| Cineconsult AS | Arts & recreation | 2021 |
| CLOSE2HOME Agentur Ans | Wholesale & retail | 2022 |
| CM Garberg AS | Other services | 2024 |
| Coldbyte AS | Information & communication | 2026 |
| Cruisecompagniet AS | Administrative & support | 2021 |
| D5 Holding AS | | 2025 |
| Dageolsen Holding AS | | 2021 |
| Danube HRT AS | Professional & scientific | 2024 |
| David Rugås Håndverktjenester AS | Construction | 2010 |
| Dbug AS | Information & communication | 2017 |
| Det Norske Snus Selskap AS | Wholesale & retail | 2022 |
| Diginor AS | Information & communication | 2019 |
| Digitrykk AS | Wholesale & retail | 2006 |
| Dinidrett.No AS | Wholesale & retail | 2015 |
| Diva Nordic Development AS | Wholesale & retail | 2017 |
| Diveit AS | | 2023 |
| Dosku Bilpleie AS | Other services | 2023 |
| DT Invest AS | Financial services | 2005 |
| Dugnadnorge AS | Wholesale & retail | 2019 |
| E&S Holding AS | | 2025 |
| E2 Solutions AS | Information & communication | 2017 |
| Easeit Help AS | Professional & scientific | 2007 |
| Eda Håndverktjenester AS | Construction | 2024 |
| Edvardsen Consult AS | Professional & scientific | 2019 |
| Eiendomsfryd AS | Real estate | 2014 |
| Elna Holding AS | Other services | 2024 |
| Enerxvia Systems AS | Professional & scientific | 2025 |
| Erikas Kremmerhus Ans | | 1989 |