| 1202 Holding AS | | 2024 |
| 3D Oppmåling AS | Professional & scientific | 2022 |
| 3SG Invest AS | | 2016 |
| A.S Bygg AS | Construction | 2021 |
| Abha Eiendomsutvikling AS | Construction | 2017 |
| Abrahamsson & Haugstvedt AS | Construction | 2001 |
| Abrahamsson Invest AS | Financial services | 2017 |
| Abz Eiendom AS | Real estate | 2006 |
| Ace - Invest AS | | 2022 |
| Admir Transport AS | Transport & logistics | 2015 |
| Adr Safety Limited Nuf | Professional & scientific | 2011 |
| Adventure Road AS | Information & communication | 2025 |
| Aesir Academy AS | Education | 2017 |
| Akme Holding AS | | 2023 |
| Albi AS | Real estate | 1984 |
| Alfa Anlegg & Utleie AS | Administrative & support | 2025 |
| Alfafood AS | Wholesale & retail | 1993 |
| Alt Levert AS | Hospitality | 2018 |
| Andge AS | | 2024 |
| Anne Johansen AS | Professional & scientific | 1998 |
| Apb Invest AS | Real estate | 2019 |
| Arcessor AS | | 2025 |
| Arcverk AS | Information & communication | 2026 |
| Ardy Creations AS | Manufacturing | 2023 |
| Arigus AS | | 2013 |
| Arkitektkontoret Borgen Og Bing Lorentzen AS | Professional & scientific | 1995 |
| Assimilate Da | Education | 2019 |
| Augestad Tak Og Fasade AS | Construction | 2015 |
| Auron Holding AS | | 2025 |
| Auto B AS | Administrative & support | 2020 |
| Automatutleie Da | Arts & recreation | 1993 |
| Av-Consult AS | Professional & scientific | 2018 |
| Avempro AS | Manufacturing | 2016 |
| Aviator Engineering AS | Professional & scientific | 2018 |
| Awan Gruppen AS | Hospitality | 2005 |
| B.A. Gruppen AS | Administrative & support | 2009 |
| BACKOFFICE4U AS | Professional & scientific | 2018 |
| Bad Og Hjem AS | Construction | 2012 |
| Badify AS | Construction | 2025 |
| Baker Klausen Drammen AS | Wholesale & retail | 2007 |
| Bakeriutsalget Krokstadelva AS | Wholesale & retail | 2009 |
| Bakermester Klausen AS | Manufacturing | 2010 |
| Bakermester Klausen Gruppen AS | Manufacturing | 2012 |
| Bardu Boligutleie AS | Real estate | 2002 |
| Bavii AS | Professional & scientific | 2020 |
| Baw AS | Financial services | 2016 |
| Ben Klausen Holding AS | Manufacturing | 2012 |
| Berget Bygg Og Eiendom AS | Real estate | 2005 |
| Berglyngen AS | | 2025 |
| Betongproff AS | Construction | 2024 |
| Bints Holding AS | | 2023 |
| Bjørn Myhre Sport AS | Wholesale & retail | 1996 |
| Blink Hus Sigdal AS | Construction | 1985 |
| Bnyd AS | Real estate | 2026 |
| Bruveien 13 AS | Real estate | 2020 |
| Brødrene Solem AS | Construction | 1979 |
| Buskerud Betongarmering AS | Construction | 2012 |
| Buskerud Bygg Og Eiendom AS | Construction | 2022 |
| Buskerud Klokker Og Smykker AS | Wholesale & retail | 2016 |
| Buskerud Tak AS | Construction | 2025 |
| Buskerud Takpartner AS | Construction | 2024 |
| Buskerud Tele AS | Wholesale & retail | 2000 |
| Bygg Og Bad Service AS | Construction | 2025 |
| Bygg Og Naturstein AS | Construction | 2017 |
| Byggverden AS | Construction | 2011 |
| Cancoating AS | Professional & scientific | 2011 |
| Carisan Norge AS | Wholesale & retail | 1994 |
| Chmr Holding AS | | 2022 |
| Chorify Technologies AS | Information & communication | 2026 |
| Christensen & Langeland Da | Construction | 2009 |
| Cman Holding AS | | 2018 |
| Copper Invest AS | | 2020 |
| Dalbergs Rørsveiser AS | Manufacturing | 2026 |
| Daytona Bilsenter AS | Wholesale & retail | 2024 |
| Dekorist AS | Professional & scientific | 2017 |
| Dekorom AS | Construction | 2020 |
| Den AS | Professional & scientific | 2005 |
| Denstorenettbutikken.No AS | Wholesale & retail | 2018 |
| Din Truckpartner AS | Real estate | 2009 |
| Divino Ans | Wholesale & retail | 1991 |
| DM Auto AS | Wholesale & retail | 2021 |
| DMQ Transport AS | Transport & logistics | 2022 |
| Dominguez Legacy Investments AS | Real estate | 2017 |
| Dorf Holding AS | | 2025 |
| Drammen Entreprenør AS | Construction | 2012 |
| Drammen Renholdspartner AS | Administrative & support | 1999 |
| Drammen Verktøyindustri AS | Manufacturing | 2010 |
| DST Arkitekter AS | Professional & scientific | 2022 |
| E-Nox AS | Wholesale & retail | 1999 |
| Ebbesen Holding AS | | 2025 |
| Ec Byggtjenester AS | Construction | 2022 |
| Ec Eiendom Og Bolig AS | Real estate | 2018 |
| Ec Invest Holdingselskap AS | Construction | 2018 |
| Ec Renhold AS | Administrative & support | 2026 |
| Eet Eiendomsutvikling AS | Real estate | 2016 |
| Effektiv-Team AS | Construction | 2014 |
| Eidsfoss Bensin AS | Wholesale & retail | 2023 |
| Eiker Bilsenter AS | Wholesale & retail | 2025 |
| Eiker Blikk & Ventilasjon AS | Construction | 2011 |
| Eiker Bygg & Membran AS | Construction | 2012 |