| Digital Booking AS | Information & communication | 2021 |
| Digital Kantine AS | Hospitality | 2022 |
| Digital Reise AS | Administrative & support | 2024 |
| Din Barbershop AS | Other services | 2023 |
| Dingz Invest AS | Information & communication | 2022 |
| District Barbershop AS | Other services | 2023 |
| Dith Network SA Norway Representative Office | Professional & scientific | 2017 |
| DKK Eiendomsinvest AS | Water & waste | 2009 |
| DL Holding AS | Water & waste | 2012 |
| Docelf AS | Information & communication | 2022 |
| Doktor Torstein AS | Health & social care | 2025 |
| Doktorgården Lillestrøm AS | Real estate | 2018 |
| Domain Development UK Ltd | | 2015 |
| Domain Synergies Ltd | Administrative & support | 2015 |
| Domine Eiendom AS | Real estate | 2022 |
| Domo AS | Hospitality | 2022 |
| DR Shuffle AS | Professional & scientific | 2021 |
| DR. Irfan Legeselskap AS | Health & social care | 2020 |
| DR. Kristensen AS | | 2026 |
| Driv Consulting AS | Professional & scientific | 2018 |
| Driveaway AS | Administrative & support | 2025 |
| Dronevask AS | Administrative & support | 2024 |
| Drømmekjøkkenet Lillestrøm AS | Wholesale & retail | 2012 |
| DT Flexion AS | Professional & scientific | 2012 |
| DT Partners AS | Professional & scientific | 2025 |
| Duvi AS | Financial services | 2013 |
| Dva Holding AS | | 2025 |
| Dylan Invest AS | | 2020 |
| Dynea AS | Manufacturing | 2013 |
| Dyrskuevegen 12 AS | Real estate | 2023 |
| Dyrskuevegen 8 AS | Real estate | 2023 |
| E-M Holding AS | | 2017 |
| E-Matic Data Center Controls AS | Professional & scientific | 2025 |
| Easy Solskjerming AS | Wholesale & retail | 2016 |
| Easydesk AS | Information & communication | 2012 |
| Easymeet AS | Information & communication | 2025 |
| Eatit AS | Financial services | 2007 |
| Eb Elektro AS | Wholesale & retail | 2014 |
| Ebg Hold AS | Construction | 2023 |
| Ecit Marketing AS | Professional & scientific | 2019 |
| Ecit Unifi AS | Professional & scientific | 2023 |
| Ecohytter AS | Real estate | 2015 |
| Ed Prosjekt AS | Professional & scientific | 2022 |
| Edge Lillestrøm AS | Other services | 2022 |
| Edholmen Fritid AS | Wholesale & retail | 1968 |
| Edinborg AS | Real estate | 2015 |
| Eg Entreprenør AS | Administrative & support | 1983 |
| Eg Invest Fund AS | | 2021 |
| Eg Rør AS | Construction | 2023 |
| Eggum Regnskap Og Rådgivning AS | Professional & scientific | 1984 |
| Eggum Revisjon AS | Professional & scientific | 2005 |
| Egil Svendsen AS | Administrative & support | 1990 |
| Egset Invest AS | | 2026 |
| Eian Holding AS | | 2019 |
| Eidsvoll Stasjonsby AS | Real estate | 2000 |
| Eidsvoll Verk Tomteselskap AS | Real estate | 2009 |
| Eiendomsgruppen Oslo AS | Real estate | 2006 |
| Eiendomshuset AS | Real estate | 2016 |
| Eika Eiendomsutvikling AS | Real estate | 2004 |
| Eilur AS | | 2019 |
| Einar Otnes AS | Financial services | 2015 |
| Eirik Reksten Holding AS | Information & communication | 2022 |
| Ekbø AS | | 2026 |
| Ekkab Invest AS | Real estate | 2018 |
| Ekko Investment AS | Financial services | 2005 |
| Ekspress Gutta AS | Transport & logistics | 2023 |
| El-Control AS | Construction | 2024 |
| Elba Eiendom AS | Real estate | 2013 |
| Eldøyane Eiendom AS | Real estate | 2013 |
| Elektriker På Hjul AS | Professional & scientific | 2023 |
| Elektro - VKF Holding AS | Other services | 2010 |
| Elektro-Vkf AS | Other services | 1970 |
| Elemente AS | Construction | 2026 |
| Elevate Performance AS | Professional & scientific | 2025 |
| Elma Utvikling AS | Information & communication | 2023 |
| Eltigani AS | Health & social care | 2020 |
| Emaljeskilteksperten AS | Wholesale & retail | 1998 |
| Emek Invest AS | | 2025 |
| EMMA1 Holding AS | Hospitality | 2014 |
| Emperia Holding AS | Financial services | 2002 |
| Empet AS | Professional & scientific | 2016 |
| Emtida AS | Real estate | 2013 |
| Endringstanke AS | Professional & scientific | 2026 |
| Ends Holding AS | Other services | 2025 |
| Energihuset Lillestrøm AS | Real estate | 2020 |
| Enerpac AS | Wholesale & retail | 1996 |
| Engen Investerer AS | | 2024 |
| Engersen Invest AS | Real estate | 2018 |
| Engulvsfjellet Invest AS | Financial services | 2017 |
| Eni Europe Ltd | Administrative & support | 2015 |
| Ensa Modul AS | Manufacturing | 2020 |
| Ensol Nordic AS | | 2021 |
| Enzian AS | Real estate | 2013 |
| Epic Kaffebar AS | Hospitality | 2024 |
| Epicure Norway AS | Wholesale & retail | 2015 |
| Epnor AS | Real estate | 2019 |
| Equipo AS | Administrative & support | 2022 |
| Ereg AS | Information & communication | 2000 |
| Erem Bygg & Eiendom AS | Real estate | 2024 |
| Ergofast AS | Professional & scientific | 1997 |