| 4TRAVEL AS | Administrative & support | 2006 |
| A Grinna Holding AS | | 2026 |
| A Joyful Child AS | Education | 2022 |
| Ak Invest Og Eiendom AS | Real estate | 2005 |
| Anders Eidal Transport AS | Transport & logistics | 1990 |
| Andersen Bil & Maskin AS | Construction | 2026 |
| Apexs Holding AS | | 2025 |
| AS Jaco | Construction | 1976 |
| Auto Consult AS | Other services | 2001 |
| Bask Entreprenør AS | Construction | 2022 |
| Bask Holding AS | Construction | 2021 |
| Bask Maskin AS | Administrative & support | 2024 |
| Benteo AS | Information & communication | 2025 |
| Berg Maskinservice AS | Professional & scientific | 2013 |
| Best Billakksenter AS | Other services | 2019 |
| Best Bilutleie AS | Administrative & support | 2019 |
| BING1 AS | Hospitality | 2012 |
| Bingen Barnehage AS | Education | 2013 |
| Bjelde Eiendomsutvikling AS | Construction | 2011 |
| Bjørn Håkonsen Mur Og Flis- Legging AS | Construction | 2006 |
| Bodin Concept Nuf | Professional & scientific | 2015 |
| Borgevad Holding AS | | 2024 |
| Bra Invest & Vaktmestertjenester AS | Real estate | 2026 |
| Bra Nok Eiendom AS | Real estate | 2024 |
| Bratur AS | Education | 2016 |
| Bråthen Elektro AS | Construction | 2009 |
| Buskerud Drift & Vedlikehold AS | Administrative & support | 2014 |
| Buskerud Media AS | Professional & scientific | 2023 |
| Buskerud Vaktmesterservice Da | Administrative & support | 2015 |
| BVS Blikkenslagerservice AS | Construction | 2006 |
| BVS Filter AS | Wholesale & retail | 2020 |
| BVS Utleie AS | Administrative & support | 2023 |
| Bygda Maskin AS | Construction | 2023 |
| Byggmester Stig Eriksen AS | Construction | 2022 |
| Charlotte AS | Other services | 2022 |
| Da Nor Hygiene AS | Wholesale & retail | 2016 |
| Diesel AS | | 2024 |
| Dokka Invest AS | Real estate | 2005 |
| Eiendomsanlegg Limited Nuf | Transport & logistics | 2011 |
| Eiker Dyreklinikk AS | Professional & scientific | 2009 |
| Eiker Graveservice AS | Construction | 2020 |
| Eiker Hjort AS | Wholesale & retail | 2023 |
| Eiker Rørservice AS | Construction | 2018 |
| Enger Entreprenør AS | Construction | 2014 |
| Fogderudmoen Skog Da | Agriculture & fishing | 1996 |
| Freki AS | Professional & scientific | 2004 |
| Frölich Bygg AS | Construction | 2026 |
| Frölich Eiendom AS | Real estate | 2026 |
| G a Holding AS | | 2019 |
| Gah Investering AS | Real estate | 2017 |
| GBB Eiendom AS | Construction | 2016 |
| Gere AS | Wholesale & retail | 2014 |
| GV Interiør AS | Wholesale & retail | 2011 |
| Harald Lysaker Transport AS | Construction | 2021 |
| HCP AS | | 2021 |
| Helge Lund Invest AS | Real estate | 2005 |
| Hemsedal Vaktmesterkompani AS | Administrative & support | 2018 |
| Hernandez Foto AS | Professional & scientific | 2022 |
| Hibernum AS | Real estate | 2005 |
| Highroad Holding AS | Financial services | 2015 |
| Hoffmann & Hagen AS | Real estate | 2016 |
| Holte Planter AS | Agriculture & fishing | 2020 |
| Holtefjell Bygg AS | Real estate | 2017 |
| Holtefjell Laft AS | Construction | 2011 |
| Holthes Fjellsprengning AS | Construction | 2021 |
| Homelien Invest AS | Construction | 2005 |
| Horsrudveien SA | Real estate | 1963 |
| HVK Utleie AS | Administrative & support | 2014 |
| Hybridpower AS | Professional & scientific | 2018 |
| Hågasletta 9 AS | Real estate | 2006 |
| Håkon Lund Invest AS | | 2005 |
| Ib´S Kranservice AS | Construction | 2026 |
| Ingebo Anlegg AS | Construction | 1990 |
| Jaran Holding AS | Real estate | 2009 |
| Johan Ragnar Hansen AS | Transport & logistics | 1989 |
| JTK Gruppen AS | Construction | 2021 |
| Julius Gave & Interiør AS | Wholesale & retail | 2006 |
| Kama Rørlegger AS | Construction | 2018 |
| KH Bil AS | Wholesale & retail | 2022 |
| Kolbjørnsrud Skog Da | Agriculture & fishing | 1910 |
| Kristensen Skogsdrift AS | Agriculture & fishing | 2014 |
| Krokaveien 3 B AS | Real estate | 2019 |
| Langebro Holding AS | Real estate | 2005 |
| Langebro Invest AS | Real estate | 2001 |
| Leanna AS | | 2025 |
| Leanna Holding AS | | 2024 |
| Lege Ingunn B. Solberg AS | Health & social care | 2019 |
| Leversby Service & Consulting AS | Construction | 2022 |
| Lumberjack Powerline AS | Agriculture & fishing | 2018 |
| Løver Service AS | Manufacturing | 2014 |
| M.Berg Holding AS | Administrative & support | 2024 |
| Magnus Berg Utleie AS | Administrative & support | 2024 |
| Malbec AS | Real estate | 2021 |
| Mannavita Norway AS | Manufacturing | 1996 |
| Mesterwork Montasje AS | Construction | 2024 |
| Midtfylket Dyrlegekontor AS | Professional & scientific | 2013 |
| Midtfylket Invest AS | Professional & scientific | 2020 |
| Mifi Invest AS | Arts & recreation | 2011 |
| Mivatho Holding AS | Wholesale & retail | 2021 |
| Morten Næss Transport AS | Transport & logistics | 2018 |