| Cirk AS | | 2025 |
| Cisa Nordic AS | Wholesale & retail | 2025 |
| Cloudalarm AS | Manufacturing | 2017 |
| Codan Norge AS | Wholesale & retail | 1986 |
| Connext Consulting AS | Information & communication | 2022 |
| CRP Bad Og Bygg AS | Construction | 2016 |
| CU29 Eiendom AS | Real estate | 2023 |
| Cyber Holding AS | Real estate | 1998 |
| Daae AS | Financial services | 2020 |
| Dahle Byggservice AS | Construction | 2021 |
| Decrescendo AS | Professional & scientific | 2004 |
| Det Norske Ibsenkompaniet AS | Arts & recreation | 2010 |
| Det Norske Ibsenkompaniet Produksjoner AS | Arts & recreation | 2023 |
| Dibali Rør AS | Construction | 2024 |
| Din Hud & Kropp AS | Other services | 2007 |
| Ditt Barns Førstehjelp AS | Education | 2019 |
| DS Sundby AS | Arts & recreation | 2006 |
| Duffen Invest AS | | 2019 |
| DWM Holding AS | | 2020 |
| Dynamic Change AS | Health & social care | 2013 |
| Døhlen Media AS | Professional & scientific | 2026 |
| Eana Invest AS | Financial services | 2022 |
| Ebø Holding AS | Professional & scientific | 2023 |
| Egil Langseth AS Transport | Transport & logistics | 1991 |
| Eida Holding AS | | 2022 |
| Eiendom Og Økonomitjenester AS | Professional & scientific | 2022 |
| Eikeberg Holding AS | | 2018 |
| Eintech Holding AS | | 2022 |
| Ekbro Invest AS | Real estate | 2021 |
| Ekkjestøl Holding AS | Real estate | 2018 |
| Ekmo AS | | 2023 |
| El-Råd AS | Professional & scientific | 2013 |
| Elatech Gruppen AS | Information & communication | 2020 |
| Elektro Norden AS | Construction | 2018 |
| Eliso AS | Professional & scientific | 2007 |
| Emed AS | Health & social care | 2017 |
| Enduro AS | Financial services | 2017 |
| Energi Entreprenøren AS | Construction | 2016 |
| Enexcell AS | Construction | 2013 |
| Engelgran AS | Real estate | 2019 |
| Englund Bygg AS | Construction | 2021 |
| Englund Holding AS | Construction | 2021 |
| Enventor AS | Professional & scientific | 2017 |
| Erik Haugland AS | Real estate | 2005 |
| Erista Holding AS | Financial services | 2014 |
| Esg Studio AS | Professional & scientific | 2024 |
| Esta Holding AS | Financial services | 2014 |
| Ett Steg AS | Education | 2023 |
| Expert-Bygg AS | Construction | 2025 |
| F4 Labs AS | Information & communication | 2025 |
| Faee 1 Services AS | Administrative & support | 2021 |
| Failure's AS | Administrative & support | 2017 |
| Farmers Holding AS | | 2018 |
| Fats Ltd | Arts & recreation | 1999 |
| Feda Gruppen AS | | 2024 |
| FGS Invest AS | Real estate | 2005 |
| Fie Byggetjenester AS | Construction | 2011 |
| Fie Eiendom AS | | 2008 |
| Fie Kontroll Og Byggesak AS | Professional & scientific | 2026 |
| Finberg Familiebolig AS | Real estate | 2023 |
| Fineira AS | | 2012 |
| Fineste AS | Wholesale & retail | 2019 |
| Fladby Capital AS | | 2026 |
| Flytteagenten.As | Transport & logistics | 2021 |
| Folk Holding AS | Professional & scientific | 2019 |
| Folk Og Fokus AS | Professional & scientific | 2019 |
| Form Bygg AS | Construction | 2024 |
| Fortuna Bygg AS | Construction | 2019 |
| Framstad Holding AS | | 2024 |
| Fransson Holding AS | Professional & scientific | 2022 |
| Frederik Holding AS | Transport & logistics | 2021 |
| Freeride Holding AS | | 2019 |
| Frisørhjørnet AS | Other services | 2002 |
| Frisørsalong Danijela AS | Other services | 2026 |
| Front Renhold & Service AS | Administrative & support | 2010 |
| Furtech AS | Professional & scientific | 2016 |
| FWV Holding AS | | 2023 |
| Gamle Dalsveg 132 AS | Real estate | 2021 |
| Gamle Smia Sportspub AS | Hospitality | 1991 |
| Gardermoen Logistikkpark AS | Real estate | 2024 |
| Gauterud Gris AS | Agriculture & fishing | 2018 |
| Genial Elektro AS | Construction | 2005 |
| GGH Invest AS | Financial services | 2017 |
| Gistirabben I AS | Real estate | 2017 |
| Gjerdrum Auto AS | Other services | 2007 |
| Gjerdrum Beitelag | Agriculture & fishing | 1982 |
| Gjerdrum Boliger AS | Real estate | 2016 |
| Gjerdrum Boliger Næring AS | Real estate | 2024 |
| Gjerdrum Bygg Og Anlegg AS | Construction | 2019 |
| Gjerdrum Friluftsbarnehage AS | Education | 2022 |
| Gjerdrum Fysioterapi & Trening AS | Arts & recreation | 2000 |
| Gjerdrum Idrettspark SA | Construction | 1998 |
| Gjerdrum Innkjøpslag SA | Wholesale & retail | 1990 |
| Gjerdrum Legesenter Da | Health & social care | 2003 |
| Gjerdrum Naprapati & Trening AS | Health & social care | 2015 |
| Gjerdrum Næringspark AS | Professional & scientific | 2014 |
| Gjerdrum Sol & Velvære AS | Other services | 2016 |
| Gjerdrum Torg AS | Real estate | 2007 |
| Gjerdrum Utmarkslag Og- Grunneierlag SA | Real estate | 2018 |
| Gjerdrum Utmarkslag SA | Real estate | 1971 |