| 2 Bygg AS | Construction | 2023 |
| 3 T Bygg AS | Construction | 2017 |
| 3 T Bygg Holding AS | Real estate | 2005 |
| A. Bakken Invest AS | Real estate | 2021 |
| Aj Takst Og Prosjekt AS | Professional & scientific | 2017 |
| Akupunktør Siv Anett K. Høgfoss AS | Health & social care | 2022 |
| Am Vilt Og Catering AS | Manufacturing | 2014 |
| Anders Røste Holding AS | Real estate | 2017 |
| Arne Og Jan Holding AS | Real estate | 2011 |
| Arnski Holding AS | | 2026 |
| Aurora Lex AS | Professional & scientific | 2025 |
| Automaster AS | Wholesale & retail | 2018 |
| Bacvir AS | Wholesale & retail | 2021 |
| Bakken Bil Og Pleie AS | Other services | 2019 |
| BD Tak AS | Construction | 2024 |
| Benton AS | Real estate | 1995 |
| Bergan Smie & Verksted AS | Manufacturing | 2009 |
| Berge Multiservice AS | Construction | 2022 |
| Bexon AS | Real estate | 1988 |
| BHS Holding AS | | 2022 |
| Bjerkebo Kompetanseutvikling AS | Other services | 1998 |
| Bohn AS | Professional & scientific | 2015 |
| Brantenborgveien Holding AS | | 2002 |
| Brede Grøterud Holding AS | Financial services | 2017 |
| Breivikhagan AS | | 2019 |
| Brogården AS | Real estate | 2012 |
| Btech Solutions AS | Professional & scientific | 2019 |
| Buliaskogen Da | Real estate | 2014 |
| Buskerud Spesialinnredning AS | Manufacturing | 1979 |
| Bygdesnekkern AS | Construction | 1987 |
| Byggpro AS | Wholesale & retail | 2001 |
| BYGGSJEKK1 AS | Professional & scientific | 2007 |
| Bårud Eiendom AS | Real estate | 1992 |
| Bårud Holding AS | Real estate | 2016 |
| Comforth Scandinavia | Wholesale & retail | 2024 |
| Compcon AS | Professional & scientific | 2019 |
| Container Og Massegjenvinning AS | Water & waste | 2013 |
| Daniel Madsen Invest AS | Construction | 2020 |
| Diamond With Love AS | Agriculture & fishing | 2026 |
| Dinebrikker AS | Wholesale & retail | 2022 |
| Dkno Partners | Professional & scientific | 2022 |
| DM Bygg AS | Construction | 2020 |
| Doktorveien 1 AS | Real estate | 2020 |
| Dr.Ing. Christopher Hoen AS | Professional & scientific | 1998 |
| DS Bygg AS | Construction | 2024 |
| Due Diligence Gruppen Da | Education | 1994 |
| E W Hilling Invest AS | | 2026 |
| E-Handel | Wholesale & retail | 2026 |
| E-Team Martin AS | Construction | 2022 |
| E30 Garage AS | Manufacturing | 2023 |
| Easyliving AS | Real estate | 2021 |
| Ebr Eiendom AS | Real estate | 2025 |
| Eduki AS | Professional & scientific | 2018 |
| Eie Eiendom AS | Real estate | 2006 |
| Ekengården AS | Real estate | 1981 |
| Ekh AS | Other services | 2016 |
| Ekiz Holding AS | | 2026 |
| Elbil Auto AS | Wholesale & retail | 2018 |
| Elfem AS | | 2022 |
| Emd Eiendom AS | Real estate | 2022 |
| Engen Fjellsprengning AS | Construction | 2022 |
| Enger Skog Da | Agriculture & fishing | 2018 |
| Enkel Varme AS | Wholesale & retail | 2019 |
| Erik Bråthen AS | | 2005 |
| Espen Norup Berget AS | Other services | 2026 |
| Evje Invest AS | | 2023 |
| Fam. Madsen Eiendom AS | Real estate | 2005 |
| Feelgood Åmot AS | Arts & recreation | 2025 |
| Fin Fyr AS | | 2026 |
| Finess Hårstudio AS | Other services | 2016 |
| FK Totalbygg AS | Professional & scientific | 2015 |
| Flintegård AS | Transport & logistics | 2016 |
| Flintegård Dyretransport AS | Transport & logistics | 2018 |
| Flintegård Entreprenør AS | Construction | 2025 |
| Flintegård Gruppen AS | Construction | 2025 |
| Flintegård Kompetanse AS | Education | 2023 |
| Fløtten Invest AS | Wholesale & retail | 2023 |
| Formo Vannverk | Water & waste | 1954 |
| Fossum Samdrift Da | Agriculture & fishing | 2004 |
| Fossveien 12 Lier AS | Real estate | 2026 |
| Fredhaug AS | | 2013 |
| Frøma AS | Real estate | 2019 |
| Frøyse Holding AS | Manufacturing | 2005 |
| G.F. Eiendom AS | Real estate | 2009 |
| Gaute J.Hæhre AS | Construction | 2023 |
| Gaw Eiendom AS | Real estate | 2015 |
| Gaw Holding AS | Construction | 2011 |
| Glass & Import AS | Manufacturing | 2011 |
| GLF Holding AS | | 2019 |
| Go Takst AS | Professional & scientific | 2011 |
| Go'Biten Kiosk AS | Wholesale & retail | 1996 |
| Golmsrudkollen Og Omegns Utmarkslag SA | Real estate | 1967 |
| Green-Box Norge AS | Professional & scientific | 2022 |
| Gunnerud AS | Financial services | 2016 |
| GYM2000 Treningssenter AS | Arts & recreation | 2017 |
| H.A. Yttri AS | Professional & scientific | 2025 |
| Halvorsen Eiendom AS | Real estate | 1997 |
| Halvorsen Glass Og Service AS | Construction | 2018 |
| Hams Agentur AS | Wholesale & retail | 2025 |
| Handymans Ans | Construction | 2010 |