| Boje AS | Professional & scientific | 2015 |
| Boligteknikk AS | Wholesale & retail | 2013 |
| Bolt Invest AS | | 2012 |
| Borgheim AS | | 2005 |
| BR Investeringer AS | Financial services | 2015 |
| Brait AS | Professional & scientific | 2026 |
| Brattdal AS | Professional & scientific | 2021 |
| Brekke Naturbarnehage AS | Education | 2009 |
| Bright Brains AS | Professional & scientific | 2023 |
| Brillefint AS | | 2019 |
| Bris Konsult AS | Construction | 2009 |
| Brisk Eiendom AS | Real estate | 1972 |
| Brutal AS | | 2022 |
| Brødr Brekmo AS | | 2019 |
| Brønn Og Pumpeservice AS | Construction | 2025 |
| Btk's Invest AS | | 2023 |
| Buffé Da | Administrative & support | 2024 |
| Bull Eiendomsutvikling AS | Real estate | 2018 |
| Bygg- Og Energiteknikk Da | Professional & scientific | 2006 |
| Byggmester Geir Holum AS | Construction | 2014 |
| Byggmester Håvard Dittmann AS | Construction | 1998 |
| Byggrådhuset AS | Education | 1990 |
| Byggx AS | Real estate | 2024 |
| CA2 Holding AS | Wholesale & retail | 2020 |
| Caizer AS | Wholesale & retail | 2005 |
| Call Systems Norge AS | Wholesale & retail | 2015 |
| Capada AS | Other services | 2019 |
| Caracal AS | Health & social care | 2024 |
| Carbonworks Norway AS | Energy | 2021 |
| Carl XV Gate 3 AS | Real estate | 2008 |
| Case Maritime AS | Professional & scientific | 2019 |
| Cathrine Emilie AS | Arts & recreation | 2024 |
| Catu AS | | 2018 |
| Ce Utvikling AS | Professional & scientific | 2005 |
| Ceo AS | Information & communication | 2009 |
| Cermino AS | Wholesale & retail | 2021 |
| Cevtech AS | Financial services | 2018 |
| Chalem Holding AS | Professional & scientific | 2019 |
| Charger AS | Professional & scientific | 2018 |
| Charger Holding AS | Real estate | 2018 |
| Charlotte Skjelbred Holding AS | | 2022 |
| Charterguri Invest AS | | 2019 |
| Christina Jessica AS | Health & social care | 2023 |
| CKJ Holding AS | Real estate | 2024 |
| Cloudq AS | Wholesale & retail | 2019 |
| CMC Master AS | Construction | 2023 |
| CMC Sol AS | Wholesale & retail | 2023 |
| CNL Group AS | Information & communication | 2016 |
| Co-Create Consulting & Publishing AS | Other services | 2012 |
| Cocoapps AS | Information & communication | 2021 |
| Collier Holding AS | | 2021 |
| Comcare Solutions AS | Information & communication | 2014 |
| Consista AS | Wholesale & retail | 2014 |
| Crea Diem Holding AS | Other services | 2015 |
| Creo Kjøkken AS | Manufacturing | 2024 |
| Da Kaasa & Jacobsen | Administrative & support | 1988 |
| Dakato AS | Real estate | 2016 |
| Daniko Invest AS | Real estate | 2021 |
| Dava Holding AS | | 2023 |
| Detalj Omsetning Ans | | 1994 |
| Detechtiv AS | Administrative & support | 2025 |
| DH Invest & Regnskap AS | Professional & scientific | 2003 |
| Dialog Holding AS | Professional & scientific | 2019 |
| Direkte Regnskap AS | Professional & scientific | 2012 |
| Disruptor Capital AS | | 2024 |
| Divide AS | | 2025 |
| DM Holding AS | Wholesale & retail | 2005 |
| DMR Holding AS | | 2025 |
| DR Elisabeth AS | Health & social care | 2017 |
| DR Lysberg AS | Health & social care | 2017 |
| DR Rognerud AS | Health & social care | 2019 |
| DR. Lars Furuseth AS | Health & social care | 2014 |
| DR. Raheleh a. Hamedi AS | Health & social care | 2023 |
| Dragen Holding AS | | 2023 |
| Dreampage AS | Information & communication | 2026 |
| Drift & Kommunikasjon AS | Professional & scientific | 2015 |
| Driftix AS | | 2023 |
| DSW Holding AS | Wholesale & retail | 2013 |
| E-Learn AS | Information & communication | 2012 |
| E2W Holding AS | | 2026 |
| Eagle Creative AS | Construction | 2023 |
| Earned Media AS | Arts & recreation | 2016 |
| Econ Invest AS | | 2016 |
| Ecovista AS | Wholesale & retail | 2023 |
| Eide & Døtre AS | Real estate | 2005 |
| Eie Bolig AS | Real estate | 2017 |
| Eiendomsfestivalen AS | Administrative & support | 2026 |
| Eiendomsfirmaet Lilleby AS | Real estate | 2020 |
| Eiendomsselskapet AM6 AS | Real estate | 2014 |
| Eight by Wilhelmsen AS | Professional & scientific | 2025 |
| Eiha-Holding AS | | 2023 |
| Eikebø AS | Financial services | 2013 |
| Eikveien 13 AS | Real estate | 2016 |
| Eilerås Eiendom AS | Real estate | 2022 |
| Eito Holding AS | Financial services | 2005 |
| Eksponeringsservice AS | Administrative & support | 1994 |
| Eksposervice AS | Other services | 2018 |
| Electric Consulting AS | Professional & scientific | 2024 |
| Elin Graf AS | Health & social care | 2023 |
| Elite M AS | Wholesale & retail | 1989 |