| CM Security Group AS | Administrative & support | 2024 |
| Cmvb AS | | 2023 |
| CN Butikkdrift AS | Wholesale & retail | 2026 |
| Coach Grethe AS | Education | 2022 |
| Cockpit Event AS | Administrative & support | 2016 |
| Coenseo AS | Professional & scientific | 2017 |
| Consigliere AS | Professional & scientific | 2008 |
| CONSULT2B AS | Professional & scientific | 2024 |
| CONSULT2B Holding AS | Professional & scientific | 2024 |
| CONSULT2B Regnskap AS | Professional & scientific | 2024 |
| Contador AS | Professional & scientific | 2017 |
| Coop Norge Transport AS | Transport & logistics | 2015 |
| Copageus Holding AS | | 2026 |
| Core Motion AS | Real estate | 2025 |
| Creation AS | Education | 2019 |
| Creative Synergies AS | Arts & recreation | 2025 |
| Crico Norway Nuf | Wholesale & retail | 2024 |
| Cronic AS | Real estate | 2005 |
| Crossfit Jessheim AS | Arts & recreation | 2018 |
| CS Invest AS | | 2024 |
| CTC Bilpartner AS | Administrative & support | 1989 |
| Cultivo Holding AS | | 2024 |
| Daber AS | | 2016 |
| Dal Utvikling AS | Real estate | 2013 |
| Danalan AS | Real estate | 2025 |
| Danielsen Trading AS | Financial services | 2012 |
| Darbaz AS | | 2023 |
| Darren Saines Hagedesign AS | Professional & scientific | 2012 |
| Derma Aesthetics AS | Health & social care | 2023 |
| DESIGN4SPORT AS | Wholesale & retail | 2008 |
| Desired Outcome Holding AS | | 2017 |
| Detailerproducts Ans | Wholesale & retail | 2015 |
| Dibber AS | Education | 2012 |
| Dibber India AS | Education | 2019 |
| Din Gardeobe AS | Wholesale & retail | 2020 |
| Din Kjøkkenløsning Og Bolig AS | Real estate | 2014 |
| Dint AS | | 2021 |
| Dintannlege AS | Health & social care | 2021 |
| Dion Da | Wholesale & retail | 2005 |
| Ditt Lagerlokale AS | Real estate | 2023 |
| Dobbelt Så Godt AS | Hospitality | 2014 |
| Don AS | Hospitality | 2015 |
| DP Jessheim AS | Hospitality | 2020 |
| DR T. Larsen Holding AS | | 2025 |
| Draupnir Kapital AS | Professional & scientific | 2016 |
| Dreier AS | | 2008 |
| Drift Lillestrøm AS | Hospitality | 2026 |
| Drvn AS | Wholesale & retail | 2026 |
| Dråpene AS | Other services | 2026 |
| Drømmefesten AS | Wholesale & retail | 2023 |
| Dynamite Entertainment | Arts & recreation | 2016 |
| Dynasty China Restaurant AS | Hospitality | 2011 |
| Dyrkolbotn Invest AS | | 2025 |
| Døhlen Gaard AS | Real estate | 2009 |
| Døhlen Gaard Holding AS | | 2009 |
| Døli Barnehage SA | Education | 1990 |
| Dønnum Holding AS | | 2026 |
| E & P Eiendom AS | Real estate | 2008 |
| E.V. Invest AS | Construction | 2010 |
| East Marine AS | Transport & logistics | 2020 |
| Ebbestad Hus Og Hage AS | Administrative & support | 2023 |
| Ecit Wlcom AS | Information & communication | 2000 |
| Ecovalue AS | Professional & scientific | 2026 |
| Edent AS | Health & social care | 2014 |
| Effekt Digital AS | Wholesale & retail | 2015 |
| Efj-Holding AS | | 2021 |
| Egen Design AS | Wholesale & retail | 2024 |
| Ehra AS | Real estate | 2005 |
| Eidheim Strategic Advisory AS | Professional & scientific | 2026 |
| Einarsen Utvikling AS | | 2025 |
| Ekdahl Invest AS | | 2024 |
| Ekm Invest AS | Real estate | 2006 |
| Ekrem Rådgivning Og Rekruttering AS | Professional & scientific | 2019 |
| Eksplosivhund.No AS | Professional & scientific | 2019 |
| Elanto Oppmerking AS | Construction | 2013 |
| Eldon AS | Wholesale & retail | 2000 |
| Elektrovegen 2 AS | Real estate | 2019 |
| Elektrovegen 5 AS | Real estate | 2021 |
| Elevate Online AS | Information & communication | 2021 |
| Elisabeth Consulting AS | Professional & scientific | 2023 |
| Elisi Invest AS | | 2025 |
| Elite Escapes AS | Hospitality | 2021 |
| Elora Klinikken AS | Other services | 2025 |
| Elsi Invest AS | Professional & scientific | 2025 |
| Elstad Eiendom AS | Real estate | 2005 |
| Elstad Holding AS | Real estate | 2005 |
| Elux AS | Wholesale & retail | 2024 |
| Embasto AS | Professional & scientific | 2023 |
| Emil Kristian Mogens Eiendom AS | Real estate | 2002 |
| Emning AS | Information & communication | 2025 |
| Empowered Youth AS | Education | 2022 |
| Energi Og Balanse AS | Information & communication | 2014 |
| Energivegen 9 AS | Real estate | 2008 |
| Engelsrudhagen AS | Real estate | 2023 |
| Entrust AS | Professional & scientific | 2024 |
| Epsilon AS | | 1999 |
| Erfa Eiendom AS | Real estate | 2005 |
| Erga & Partnere AS | Financial services | 2022 |
| Erga & Partnere Holding AS | Financial services | 2022 |
| Ergonor AS | Professional & scientific | 1996 |