| Delic Holding AS | Financial services | 2014 |
| Den Gylne Fe AS | Wholesale & retail | 2010 |
| Den-Tech AS | Wholesale & retail | 1985 |
| Denique AS | | 2020 |
| Dieselgrossisten AS | Wholesale & retail | 2009 |
| Digi:Num AS | Professional & scientific | 1994 |
| Digibook AS | Information & communication | 2022 |
| Digipartner AS | Information & communication | 2019 |
| Digitalia AS | Information & communication | 2002 |
| Din Byggtakst AS | Professional & scientific | 2024 |
| DK Maler AS | Construction | 2026 |
| Dokka Butikkeiendom AS | Real estate | 2012 |
| Don Gonzalo AS | Real estate | 2016 |
| DP Eiendom AS | Real estate | 1991 |
| Dragen Food AS | Hospitality | 2024 |
| Dragvoll Handelseiendom AS | Real estate | 2005 |
| Dresha Holding AS | | 2026 |
| Driv Studio Da | Information & communication | 2026 |
| Drolsum Stasjon SA | Information & communication | 2012 |
| Dronning Ragnhilds Vei AS | Real estate | 2021 |
| Dronning Åstasgate 14 Ans | Real estate | 1990 |
| Dronning Åstasgate 2 AS | Real estate | 2007 |
| Dronning Åstasgate Utvikling AS | Real estate | 2022 |
| Dronningveien 27 AS | Real estate | 2019 |
| Dronningveien 3 AS | Real estate | 2016 |
| DST Invest AS | | 2021 |
| Du Og Jeg Madicken AS | Wholesale & retail | 2024 |
| Duo Group AS | Professional & scientific | 2022 |
| DV Service AS | Administrative & support | 2026 |
| DWS Dagligvare AS | Wholesale & retail | 2024 |
| Dynamics Group AS | Information & communication | 2023 |
| Dyrlegene I Norderhov AS | Professional & scientific | 2022 |
| Dølerud IT Service AS | Information & communication | 2019 |
| E-18 Lillesand Eiendom AS | Real estate | 2010 |
| E-Club AS | Wholesale & retail | 2021 |
| E-Sulation AS | Professional & scientific | 2018 |
| E. Ø. Holding AS | Professional & scientific | 2009 |
| E45 Aterma AS | Professional & scientific | 2005 |
| Easholding AS | | 2025 |
| Eat & Drive AS | Hospitality | 2022 |
| Ecit Law Advokater AS | Professional & scientific | 2000 |
| Ecit Veiby Akonto AS | Professional & scientific | 2005 |
| Eckmann Carlsen AS | Financial services | 2005 |
| Ecoelg AS | Manufacturing | 2021 |
| Eddisinvest AS | | 2023 |
| Edvard the Musical AS | Administrative & support | 2021 |
| Effektor AS | Information & communication | 2012 |
| Eggemoen Heli Paint AS | Manufacturing | 2022 |
| Eggemoen Utvikling AS | Real estate | 2000 |
| Egils Rør AS | Construction | 2019 |
| Eide Handelsbygg AS | Real estate | 2007 |
| Eiendom Style AS | Real estate | 2023 |
| Eiendomsmegler 1 Ringerike Hadeland AS | Real estate | 1989 |
| Eiendomsselskapet Veien Kulturminnepark AS | Arts & recreation | 2002 |
| Eiendomsservice Ringerike AS | Construction | 1996 |
| Eiendomsutvikling Ringerike AS | Real estate | 2018 |
| Eifel AS | Administrative & support | 2008 |
| Eik Travel AS | Arts & recreation | 2008 |
| Eikli Bil Og Karosseri AS | Other services | 2013 |
| Eikli Bilpleie AS | Other services | 2013 |
| Eikli Eiendom AS | Real estate | 2004 |
| Eikli Næringspark AS | Real estate | 2014 |
| Eilev Mellerud AS | Manufacturing | 2007 |
| Eilo Tre AS | Manufacturing | 2012 |
| Eksonor AS | Wholesale & retail | 2020 |
| Ekspander AS | Wholesale & retail | 2025 |
| El. Mesh AS | Real estate | 2005 |
| Elektro Eiendom AS | Real estate | 2004 |
| Elektro Invest AS | Financial services | 2014 |
| Elektroutvikling AS | Professional & scientific | 2020 |
| Elkjøp Hønefoss AS | Wholesale & retail | 2000 |
| Ellingsrud Eiendom AS | Real estate | 2006 |
| Elstad Drift AS | Administrative & support | 2021 |
| Elstad Fabrication AS | Professional & scientific | 2021 |
| Elstad Group AS | Professional & scientific | 2021 |
| Eltrode AS | Wholesale & retail | 2016 |
| Eltrode Development AS | Professional & scientific | 2025 |
| Eltrode Utleie AS | Administrative & support | 2020 |
| Elvarheimgata Butikkeiendom AS | Real estate | 2011 |
| Elverum Øst Butikkeiendom AS | Real estate | 2008 |
| Emballator Ulricehamns Bleck AB | Wholesale & retail | 2015 |
| Emilem AS | | 2023 |
| Emmo AS | Real estate | 2022 |
| Empire Import AS | Wholesale & retail | 2024 |
| Energikanalen AS | Professional & scientific | 2011 |
| Energima Ringerike AS | Construction | 2004 |
| Enerstvedt Skog AS | Professional & scientific | 2016 |
| Enetra AS | Real estate | 2019 |
| Enetra Økonomi AS | Professional & scientific | 2019 |
| Engadin AS | Professional & scientific | 2007 |
| Engebretsen Ingeniør - Entreprenør AS | Construction | 2005 |
| Engeseth Eiendom AS | Real estate | 1989 |
| Engeseth Holding AS | | 1933 |
| Enggata 8 AS | Real estate | 2024 |
| Englegård House of Wellness AS | Manufacturing | 2026 |
| Ensa Probygg AS | Construction | 2022 |
| Entusiastbiler AS | Wholesale & retail | 2026 |
| Epet AS | Professional & scientific | 2020 |
| Eqv Invest AS | Financial services | 2018 |
| Ereditare Holding AS | Real estate | 2020 |