| Byggmester Ottesen AS | Construction | 2025 |
| Bård Solberg Holding AS | Real estate | 2005 |
| Cabot Holding AS | | 2025 |
| Cabot Software Engineering AS | Information & communication | 2010 |
| Caca AS | Professional & scientific | 2015 |
| Candy AS | Manufacturing | 1995 |
| Carbon Materials AS | Professional & scientific | 2025 |
| Carbon Solutions AS | Professional & scientific | 2012 |
| Careno AS | Real estate | 2017 |
| Carepacks AS | Professional & scientific | 2016 |
| Causa Automasjon AS | Professional & scientific | 2024 |
| Cenit Eiendom AS | Administrative & support | 2000 |
| Chahal Ventures AS | | 2025 |
| Chalk Renhold AS | Administrative & support | 2012 |
| Christiania Vekterservice AS | Education | 2024 |
| Civitec Engineering AS | Professional & scientific | 2025 |
| Climbatree Invest AS | Information & communication | 2020 |
| Climbr AS | Information & communication | 2021 |
| Cloudway AS | Information & communication | 2016 |
| Cloudway Services AS | Information & communication | 2023 |
| Cma Eiendom AS | Hospitality | 2008 |
| Cma Invest AS | Hospitality | 2005 |
| Cna Consulting AS | Professional & scientific | 2026 |
| Cna Kapital AS | | 2026 |
| Coav - Container Og Avfallsservice AS | Administrative & support | 2017 |
| Cobbler Holding AS | Administrative & support | 2023 |
| Colligo Omsorg AS | Administrative & support | 2023 |
| Complete Vekter Skolen AS | Education | 2021 |
| Copromnia AS | Professional & scientific | 2022 |
| Cream Ec AS | Financial services | 2020 |
| Cruise & Travel AS | Administrative & support | 1994 |
| Cryptowoo AS | Information & communication | 2021 |
| Custom Color Lakkering Da | Other services | 1991 |
| Cylinder Head Innovations Norway Da | Wholesale & retail | 2005 |
| Dachser Norway AS | Transport & logistics | 1984 |
| Datarekvisita Norge AS | Wholesale & retail | 1991 |
| Den Glade Maler AS | Construction | 2017 |
| Design Construction AS | Construction | 2022 |
| DF Pro AS | Construction | 2023 |
| DJC Holding AS | Administrative & support | 2021 |
| DK Invest AS | Real estate | 2015 |
| DM Invest AS | Real estate | 2023 |
| DM Utvikling AS | Real estate | 2026 |
| DR Skavang AS | Health & social care | 2025 |
| Dragebue Norge AS | Professional & scientific | 2023 |
| Dreamworld AS | | 2021 |
| Drøbak Taxi AS | Transport & logistics | 2019 |
| Drømmeslottet Holding AS | | 2026 |
| Dunam Gruppen AS | Construction | 2020 |
| Durian Invest AS | | 2022 |
| Dvital AS | Information & communication | 2010 |
| Dyrløkkebakken 3 AS | Real estate | 2009 |
| E. Sivertsen Holding AS | | 2024 |
| E1 Invest AS | Real estate | 2026 |
| Ecyo Invest AS | | 2019 |
| Eikelia 19 AS | Real estate | 2023 |
| Ekeh AS | | 2022 |
| Ekorn Trepleie AS | Agriculture & fishing | 2013 |
| Elkirurgen AS | Manufacturing | 2022 |
| Ellcon AS | Professional & scientific | 2024 |
| Elnex AS | Construction | 2025 |
| Emelie Hollow AS | Arts & recreation | 2021 |
| Emni AS | Construction | 2018 |
| Empire FS AS | | 2026 |
| Emsi Invest AS | Construction | 2012 |
| Energitema AS | Construction | 2009 |
| Engvik-Jelsness AS | Professional & scientific | 2025 |
| Engvik-Jelsness Kapital AS | | 2026 |
| Erland Sveum AS | Professional & scientific | 2020 |
| Erling Ruud Holding AS | | 2021 |
| Es Motorsport AS | Wholesale & retail | 2020 |
| Es-Kjeden SA | Other services | 2006 |
| Esem Eiendom AS | Real estate | 2007 |
| Esem Invest AS | Real estate | 2005 |
| Eskeland Eiendom AS | | 2024 |
| Eskeland Electronics AS | Wholesale & retail | 2009 |
| Espotech AS | Real estate | 2020 |
| Etex Norge Nuf | Wholesale & retail | 2010 |
| Fehr Invest AS | | 2015 |
| Fenconor AS | Wholesale & retail | 2005 |
| Fiks Bolig AS | Real estate | 2015 |
| Filét Design AS | Professional & scientific | 2013 |
| Finnanger Invest AS | | 2024 |
| Finnmark Bygg Og Takservice AS | Construction | 2017 |
| Finsk Badstumester AS | Construction | 2014 |
| Fitness Og Rehab AS | Arts & recreation | 2024 |
| Fitness Partner AS | Arts & recreation | 2012 |
| Fjell Construct AS | Construction | 2025 |
| Fjellstrand Utvikling AS | Real estate | 2012 |
| Flexi Auto AS | Wholesale & retail | 2021 |
| Flyboat Ans | Wholesale & retail | 2004 |
| Flytt.No AS | Transport & logistics | 2022 |
| FOLIERING4YOU AS | Professional & scientific | 2018 |
| Follo BB AS | Real estate | 1988 |
| Follo Holding Invest AS | Real estate | 2009 |
| Follo Taxi AS | Transport & logistics | 1989 |
| Follohallen AS | Real estate | 2001 |
| Follohus AS | Construction | 1994 |
| Follohus Eiendomsforvaltning AS | Real estate | 2016 |
| Follohus Eiendomsutvikling AS | Construction | 1999 |