| Copysafe Holding AS | Real estate | 2017 |
| Copysafe Invest AS | Real estate | 2016 |
| Core SB AS | | 2021 |
| CR Properties AS | Real estate | 2022 |
| CR Service AS | Manufacturing | 2022 |
| Credo Invest AS | Wholesale & retail | 2021 |
| Crux Kompetanse AS | Education | 2019 |
| Cso AS | | 2026 |
| CTS Holding AS | Real estate | 2016 |
| Cut Frisørsalong AS | Other services | 2012 |
| D.A Service AS | Construction | 2025 |
| Dagfinn Henriksen AS | Wholesale & retail | 2012 |
| Dale Anleggsgartner AS | Administrative & support | 2013 |
| Dallager Eiendom AS | Real estate | 2018 |
| Dallager Holding AS | Real estate | 2018 |
| Dallager Oljeservice AS | Wholesale & retail | 1996 |
| Dalsletta Barnehage SA | Education | 1989 |
| Danielsen Holding AS | Wholesale & retail | 2005 |
| Datarommet AS | Education | 2018 |
| Decimus AS | Financial services | 2017 |
| Dekorativselskapet AS | Professional & scientific | 2021 |
| Dentaapps AS | Information & communication | 2019 |
| Denttech Harstad AS | Manufacturing | 2001 |
| Devup AS | Construction | 2022 |
| Digitus AS | Health & social care | 2008 |
| Dinflytting AS | Transport & logistics | 2016 |
| Dinflytting Og Eiendomsservice AS | Transport & logistics | 2005 |
| Djawamole Da | Wholesale & retail | 2003 |
| Dobbel a Invest AS | | 2025 |
| Dog Harmony AS | Other services | 2026 |
| Dons-Hansen AS | | 2020 |
| DPN Fysioterapi AS | Health & social care | 2014 |
| DV Harstad AS | Wholesale & retail | 2020 |
| Dyrlegen Harstad AS | Real estate | 2019 |
| Dyrvikneset AS | Real estate | 2022 |
| Dyrøy Utvikling AS | Real estate | 2012 |
| Dysterud Bygg Og Tak AS | Construction | 2026 |
| E. Danielsen Holding AS | Real estate | 2016 |
| Eact Eriksen a. Consult & Transport AS | Transport & logistics | 2024 |
| Eb Harstad AS | Other services | 2023 |
| Eclectic Holdings AS | | 2023 |
| Ecophorme AS | Professional & scientific | 2015 |
| Edderkopp Betong AS | Construction | 2022 |
| Edunor AS | Real estate | 2014 |
| Edvardsen Bygg Og Eiendom AS | Administrative & support | 2023 |
| Edvardsen Multiservice AS | Transport & logistics | 2012 |
| Egon Harstad AS | Hospitality | 2001 |
| Eida Energy AS | Professional & scientific | 2019 |
| Eidesvik Agalas AS | Transport & logistics | 2023 |
| Eidesvik Agalas II AS | Transport & logistics | 2025 |
| Eidesvik Agalas Reach AS | Transport & logistics | 2011 |
| Eiendominord AS | Real estate | 2013 |
| EIENDOMSSELSKAP1 AS | Real estate | 2009 |
| Eiendomsselskapet Storgt 55 AS | Real estate | 1986 |
| Eiendomsselskapet Hagebyveien 94 AS | Real estate | 1998 |
| Eiendomsservice Nor AS | Construction | 2012 |
| Eilertsen Eiendom AS | Real estate | 2019 |
| Eilertsen Maskin AS | Wholesale & retail | 2026 |
| Eilertsen Melk Da | Agriculture & fishing | 2007 |
| Eineberggata 8 AS | Households | 1950 |
| Ekb Eiendom AS | Wholesale & retail | 2004 |
| Eksklusiv AS | Real estate | 2020 |
| El-Max AS | Construction | 2023 |
| Eldrebølgen Service Da | Health & social care | 2005 |
| Elektroanlegg AS | Construction | 2018 |
| Elgen Factory AS | Education | 2005 |
| Elisabeth Lindstrøm AS | Health & social care | 2012 |
| Elito AS | Real estate | 1978 |
| Ellen Lichtwarck Holding AS | | 2024 |
| Ellen's Pelsstudio AS | Wholesale & retail | 2010 |
| Ellida AS | Arts & recreation | 2014 |
| Elodine AS | | 2024 |
| Elumni Elektro AS | Construction | 1996 |
| Elvemo Boligutleie AS | Real estate | 2022 |
| Elvemo Eiendom AS | Real estate | 2022 |
| Elvemo Holding AS | Real estate | 2022 |
| Elvemo Utvikling AS | Real estate | 2022 |
| Emmalin AS | | 2026 |
| Emu Growth Partners Norway AS | Professional & scientific | 2022 |
| Enjoy Lofoten AS | Hospitality | 2017 |
| Entek Holding AS | | 2005 |
| Enter Revisjon Hålogaland AS | Professional & scientific | 2011 |
| Enter Revisjon Nord Norge AS | Professional & scientific | 1994 |
| Erika Haugli Endresen AS | Health & social care | 2025 |
| Eriko Nor AS | Wholesale & retail | 1975 |
| Eriksen Elektroservice AS | Construction | 2024 |
| Eriksen Hazmat Survey Arctic AS | Professional & scientific | 2023 |
| Eriksen Luftteknikk AS | Construction | 2025 |
| Erlandsen Eiendom AS | Real estate | 2024 |
| Erlandsen Transport AS | Transport & logistics | 1996 |
| Erlend Andreassen AS | Wholesale & retail | 2022 |
| Erling Møller AS | | 2021 |
| Erlpet Holding AS | | 2023 |
| Es Revisjon AS | Professional & scientific | 2012 |
| Esencia AS | Hospitality | 2019 |
| Esw AS | | 2023 |
| Etf Invest AS | Financial services | 2018 |
| Etrade AS | Wholesale & retail | 2024 |
| Etrondsen Invest AS | | 2019 |
| Evenskjer Bygg AS | Real estate | 2007 |