| 2XM Invest AS | Arts & recreation | 2015 |
| A Halvorsen Consulting AS | Professional & scientific | 2013 |
| A-B Lab AS | Professional & scientific | 2022 |
| A. Sundsmoen Holding AS | Real estate | 2018 |
| Abc Taxi AS | Transport & logistics | 2024 |
| Adsi Holding AS | Professional & scientific | 2022 |
| Ahg Holding & Invest AS | Wholesale & retail | 2016 |
| Akebakken Barnehage SA | Education | 1996 |
| Aks Meyer Holding AS | | 2020 |
| Akselsen Agenturer A/S | Wholesale & retail | 1982 |
| Allan Bjørnstad Holding AS | Financial services | 2017 |
| Alt Fikset AS | Construction | 2022 |
| Amundsen Mur & Flis AS | Construction | 2018 |
| Anabo 956 Holding AS | | 2023 |
| Anniba AS | Hospitality | 2013 |
| Apsd Holding AS | Health & social care | 2024 |
| Apsd Legevirksomhet AS | Health & social care | 2024 |
| Ask Drift AS | Transport & logistics | 2026 |
| Atle Bergill AS | | 2020 |
| Audi Bruktbil AS | Wholesale & retail | 2004 |
| Austreng AS | | 2023 |
| B Creative AS | Professional & scientific | 2018 |
| Baha Invest AS | Professional & scientific | 2024 |
| Bakeriet Cafédrift AS | Wholesale & retail | 1997 |
| Bakker Consulting AS | Professional & scientific | 2025 |
| Balique Da | Wholesale & retail | 2015 |
| Bama Blomster Holding AS | Wholesale & retail | 1999 |
| Bama Blomster Sourcing AS | Wholesale & retail | 2008 |
| Bama Blomstertorget AS | Wholesale & retail | 2007 |
| Bama Industri AS | Manufacturing | 1996 |
| Bauta Forvaltning AS | Administrative & support | 1996 |
| BB Betong AS | Construction | 2023 |
| BDM Elektro AS | Construction | 2004 |
| Benestad Solutions AS | Manufacturing | 1973 |
| Betabyte AS | Information & communication | 2016 |
| Bilforhandlerservice AS | Administrative & support | 2000 |
| Bionutritent AS | Manufacturing | 2026 |
| Bitvis AS | Professional & scientific | 2021 |
| BKS Bygg AS | Construction | 2026 |
| Blåhella Holding AS | Construction | 2015 |
| Bmsk Invest AS | | 2024 |
| BNB Travel AS | Administrative & support | 2025 |
| Boh Drift AS | Construction | 2020 |
| Borgestad Barnehage SA | Education | 1995 |
| Bork Holding AS | Other services | 2019 |
| BR Signal Consult AS | Professional & scientific | 2014 |
| Bratlie Kiropraktikk AS | Health & social care | 2023 |
| Brdr. Lindsetmo AS | Transport & logistics | 2010 |
| Brinken Klokkarstua AS | Real estate | 2019 |
| Bundli Consult AS | Professional & scientific | 2003 |
| By Lmo AS | Construction | 2021 |
| Bygg Og Anlegg AS | Construction | 2013 |
| Båhus Invest AS | Real estate | 2017 |
| Bærums Verk Bygg Og Anlegg AS | Construction | 2024 |
| Café Døla AS | Hospitality | 2026 |
| Cardhu Invest AS | Professional & scientific | 2023 |
| Cenika AS | Wholesale & retail | 2005 |
| Cignis AS | Information & communication | 2007 |
| Conenzo AS | Professional & scientific | 2023 |
| Consolvo AS | Construction | 1987 |
| Consolvo Eiendom AS | Real estate | 2004 |
| Contraphon AS | Financial services | 1991 |
| Cornwall Da | Information & communication | 1995 |
| Corroteam AS | Professional & scientific | 1983 |
| CPM Holding AS | | 2025 |
| Crecon AS | Wholesale & retail | 1987 |
| Crss Invest AS | Real estate | 2017 |
| Dark Horizon AS | | 2024 |
| Dark Tech AS | Information & communication | 2023 |
| Davik & Nyrud International Da | Wholesale & retail | 2005 |
| Dea Invest AS | Construction | 2005 |
| Det Stille Teateret Ans | Arts & recreation | 2014 |
| Digivis AS | Professional & scientific | 2021 |
| Dralier AS | Real estate | 2022 |
| Dølasletta Eiendom AS | Real estate | 2006 |
| E Johnsen Invest AS | | 2021 |
| E. Sandberg Holding AS | | 2021 |
| Eb Team AS | Professional & scientific | 2023 |
| Edgars Bakeri Holding AS | Manufacturing | 2023 |
| Edhøy AS | Real estate | 1994 |
| Effekt På Nett AS | Professional & scientific | 2022 |
| Efinet AS | Construction | 2023 |
| Ekho AS | Information & communication | 2021 |
| Eklund Consulting AS | Professional & scientific | 2025 |
| Electro Group AS | Wholesale & retail | 2017 |
| Elvebyen Interiør AS | Professional & scientific | 2013 |
| Elveveien 4 AS | Real estate | 2008 |
| Emmo Safety Engineering AS | Professional & scientific | 1983 |
| Endress & Hauser | Wholesale & retail | 2008 |
| Endress+Hauser AS | Wholesale & retail | 1973 |
| England Maskin AS | Construction | 2013 |
| Enr Enterprises AS | | 2025 |
| Epicurus AS | Health & social care | 2019 |
| Ergo Fitness Norge AS | Wholesale & retail | 2015 |
| Erlgraa Holding AS | | 2026 |
| ES Eiendom AS | Real estate | 1963 |
| Eurogroup AS | Real estate | 2009 |
| Evje Holding AS | | 2019 |
| Ewa Holmemo Holding AS | | 2018 |
| Fantor AS | Information & communication | 2026 |