| 123 Oppussing AS | Construction | 2021 |
| 336/1 Holding AS | | 2026 |
| A&B Elektro Installasjon AS | Professional & scientific | 1997 |
| A-Hk Holding AS | | 2022 |
| A.S Drift & Service AS | Wholesale & retail | 2019 |
| Absolutt Sportsreiser AS | Administrative & support | 2015 |
| Ahk Prosjektering AS | Professional & scientific | 2008 |
| Ais Utvikling AS | Professional & scientific | 1990 |
| Allsidig Drift & Logistikk AS | Administrative & support | 2025 |
| Alme Holding AS | Real estate | 2019 |
| Amante AS | Information & communication | 2013 |
| Analysas AS | Professional & scientific | 2018 |
| Andreassen Begravelsesbyrå AS | Other services | 2022 |
| Angry Brew Music Da | Arts & recreation | 2005 |
| Anlegg Og Ingeniørservice AS | Administrative & support | 2023 |
| Arco Investering AS | Real estate | 2020 |
| Ark. Atle Dahl AS | Professional & scientific | 2012 |
| Arne Slåttsveen Management AS | Professional & scientific | 2025 |
| Asado AS | Wholesale & retail | 2025 |
| Atjoh AS | | 2024 |
| Awp AS | | 2024 |
| Awp Eiendom AS | Real estate | 2021 |
| Awp Eiendomsselskap AS | Real estate | 2020 |
| B. S. Pizza Da | Hospitality | 2014 |
| Backman Holding AS | Professional & scientific | 2023 |
| Bad Og Bygg Drammen AS | Construction | 2023 |
| Baldur IT AS | Information & communication | 2025 |
| Baskomtibryggen Da | Arts & recreation | 2006 |
| Batteri Invest AS | Financial services | 2015 |
| Bauer&Nebell AS | Professional & scientific | 2023 |
| Bekkeli AS | Real estate | 2015 |
| Benedicte Haugaard AS | Professional & scientific | 2022 |
| Benja Thai Takeaway AS | Hospitality | 2025 |
| Bergan Invest AS | Real estate | 2021 |
| Berles Gårdsbutikk AS | Wholesale & retail | 2017 |
| Billy Holding AS | | 2020 |
| Birk Capital AS | | 2016 |
| Bjørn I Holding AS | Financial services | 2005 |
| Bluetech VVS AS | Construction | 2020 |
| Bokerøya AS | Transport & logistics | 2023 |
| Bokerøyveien 2 AS | Real estate | 2021 |
| Boligdrift Og Vedlikehold AS | Real estate | 2018 |
| Borg Eiendom AS | Real estate | 1986 |
| Bragernes Forvaltning AS | Financial services | 2012 |
| Brelco Teknikk AS | Information & communication | 2014 |
| Brødr. Kittelsen Rørleggerbedrift AS | Construction | 2015 |
| Brødrene Bogen Eiendom Ans | Real estate | 2010 |
| BSF Lakkeringsfri Bulkoppretting AS | Other services | 2023 |
| Building Material Corporation AS | Manufacturing | 1995 |
| Buskerud Takstsenter AS | Real estate | 2013 |
| By Suua AS | Professional & scientific | 2024 |
| Bygg Spesialisten AS | Construction | 2012 |
| Bygge Ekspert AS | Construction | 2024 |
| Buskerud regnskapsdata AS | Professional & scientific | 1983 |
| Bø Bolig AS | Real estate | 2008 |
| Cafe Kultur Ans | Hospitality | 2012 |
| Carlsson Design AS | Professional & scientific | 2016 |
| Carlsson Holding AS | Wholesale & retail | 2005 |
| Chantall Invest AS | | 2021 |
| Clavier Classics | Arts & recreation | 2013 |
| Clean Energy Technologies Norway Nuf | Construction | 2017 |
| Concilium Helse AS | Health & social care | 2019 |
| Concipio AS | Wholesale & retail | 2020 |
| Consilium Decor AS | Manufacturing | 2015 |
| CT Gruppen AS | | 2022 |
| Cutshim Frisør Og Spa AS | Other services | 2019 |
| Cxo AS | Information & communication | 2022 |
| Cxo Holding AS | Information & communication | 2022 |
| D-S Holding AS | Real estate | 2013 |
| Dataspeed AS | Administrative & support | 2005 |
| Deed City AS | Information & communication | 2015 |
| Dermal AS | Other services | 2024 |
| Devz AS | Information & communication | 2023 |
| Drammen Bilsalg AS | Wholesale & retail | 2026 |
| Drammen Båtservice AS | Manufacturing | 2006 |
| Drammen Gulvservice AS | Construction | 2024 |
| Drammen Låsservice AS | Construction | 2008 |
| Drammen Pride AS | Arts & recreation | 2023 |
| Dream Team Holding AS | Real estate | 2014 |
| Dreggen Kro & Vertshus AS | Hospitality | 2012 |
| Dunderboys Da | Arts & recreation | 2025 |
| Durant AS | Construction | 2020 |
| Dynamic Perspective AS | Wholesale & retail | 1998 |
| Ebbestad AS | Other services | 2002 |
| Ebbestad Finans AS | | 2008 |
| Ebbestad Revisjon AS | Professional & scientific | 2008 |
| Elverhøy Invest AS | | 2001 |
| Elverhøy Utvikling AS | Real estate | 2021 |
| Elverum Asfalt Og Maskin AS | Construction | 1992 |
| Elvion Eiendom AS | Real estate | 2018 |
| Energy Resources AS | Professional & scientific | 2006 |
| Enres AS | Professional & scientific | 2007 |
| Ensa AS | Wholesale & retail | 2013 |
| Entró Entreprenør AS | Construction | 2025 |
| Ep Marine & Offshore AS | Professional & scientific | 2018 |
| Even Dyve Fon AS | Administrative & support | 2022 |
| Evolving Property AS | Real estate | 2025 |
| Exodraft Nuf | Construction | 2007 |
| Fargefilm Holding AS | Professional & scientific | 2020 |
| Farmable AS | Information & communication | 2018 |