| BRB Property AS | Real estate | 2025 |
| Bremvåg Capital AS | | 2025 |
| Brillehuset Ranheim AS | Wholesale & retail | 2019 |
| Brim Ok Tindar AS | Financial services | 2014 |
| Broli Invest AS | Real estate | 2017 |
| Brurock AS | | 2017 |
| Bspn AS | Information & communication | 2026 |
| Bulwark Fence AS | | 2026 |
| Bunnpris Vikåsen AS | Wholesale & retail | 1991 |
| By Råd AS | Professional & scientific | 2002 |
| Byggråd Trondheim AS | Professional & scientific | 2025 |
| Byhaven Eiendom AS | Real estate | 1999 |
| Bykvam AS | Wholesale & retail | 2014 |
| Bøckmans Veg 74 AS | Construction | 2022 |
| C Rom AS | Professional & scientific | 2023 |
| C Santos AS | | 2019 |
| C-Isa AS | Real estate | 2015 |
| C.C Invest AS | | 2025 |
| Cabo Roig Holding AS | | 2025 |
| Cani Invest AS | | 2026 |
| Carant Holding AS | Real estate | 2002 |
| Caravanomsetning AS | Wholesale & retail | 2013 |
| Carl Johan Terrasse AS | Real estate | 2020 |
| Carlsminde AS | Real estate | 2020 |
| Cash Is King Holding AS | Professional & scientific | 2008 |
| Casual Consulting AS | Information & communication | 2019 |
| CC Lund Holding AS | Wholesale & retail | 2005 |
| CCW Invest AS | Health & social care | 2020 |
| Centurion Eiendomsforvaltning AS | Real estate | 2023 |
| Chibit Holding AS | Professional & scientific | 2005 |
| City Partners AS | Wholesale & retail | 2012 |
| Codfathers AS | Professional & scientific | 2005 |
| Coldwater AS | Information & communication | 2018 |
| Comitis AS | Real estate | 2018 |
| Contron AS | Professional & scientific | 1969 |
| Cosmic Energy Tools Da | Information & communication | 2017 |
| Costante AS | | 2021 |
| Crescere Invest AS | Financial services | 2013 |
| Dafi Holding AS | Financial services | 2015 |
| Dagen Før I Morgen AS | Professional & scientific | 2012 |
| David Smith AS | | 2025 |
| Dealhouse AS | Professional & scientific | 2008 |
| Desell Design AS | Professional & scientific | 2022 |
| Det Norske Forlaget AS | Information & communication | 2026 |
| Dialogue Eiendom AS | Real estate | 2007 |
| Diamantgalleriet AS | Wholesale & retail | 2016 |
| Dilla AS | Manufacturing | 2022 |
| Din Hudlege Drift AS | Health & social care | 2023 |
| Din Hudlege Eiendom AS | Real estate | 2004 |
| Dirgis AS | | 2025 |
| Diwp by Silje AS | Professional & scientific | 2022 |
| Diwp Holding AS | Professional & scientific | 2013 |
| DKT Invest AS | | 2024 |
| Doganoglu Eiendom AS | Real estate | 2026 |
| Doma AS | | 2021 |
| Dragan AS | | 2020 |
| Dreamknit AS | Information & communication | 2020 |
| Drengskapr AS | Professional & scientific | 2025 |
| Dronningens Gate 42 AS | Real estate | 2016 |
| Dynamic Explore AS | Manufacturing | 2025 |
| Dyrkher AS | Agriculture & fishing | 2022 |
| E. Jenssen Invest AS | | 2018 |
| Ealmenning AS | Real estate | 2019 |
| Ears Invest AS | | 2018 |
| Edgars Group AS | Transport & logistics | 2022 |
| Edha AS | | 2022 |
| Ef Investigo Holding AS | Real estate | 2012 |
| Eg Retail AS | Information & communication | 1994 |
| Ehs Holding AS | Real estate | 2009 |
| Eiendom-Invest AS | Real estate | 2016 |
| Eimisa Invest AS | Financial services | 2005 |
| Ejkani Holding AS | Information & communication | 2015 |
| Ekle Invest Holding AS | Health & social care | 2021 |
| Elgeseter Boligutvikling AS | | 2022 |
| Elgeseter Gate 19 AS | Real estate | 1998 |
| Eli Invest AS | Real estate | 2001 |
| Elomat Invest AS | | 2021 |
| Elux Holding AS | | 2019 |
| Elvo Invest AS | Professional & scientific | 2019 |
| Endre Vaade AS | Financial services | 2014 |
| Energibolig AS | Construction | 2005 |
| Energiutvikling AS | Professional & scientific | 1997 |
| Eneset Invest AS | | 2023 |
| Ennimato Invest AS | Professional & scientific | 2014 |
| Entech Products AS | Wholesale & retail | 2026 |
| Entrepinos AS | Financial services | 2014 |
| Ephemeral AS | | 2019 |
| Era Transport AS | Transport & logistics | 2023 |
| Eran Invest AS | Financial services | 2017 |
| Erbe Holding AS | Real estate | 2018 |
| Erge Holding AS | | 2023 |
| Erib AS | Wholesale & retail | 2018 |
| Erli AS | Manufacturing | 2021 |
| Eskils Holding AS | Construction | 2022 |
| Est Holding AS | Financial services | 2013 |
| Eugen Eide AS | Health & social care | 2004 |
| Eventyrklinikken AS | Health & social care | 2021 |
| Eventyrtoppen AS | Information & communication | 2020 |
| Eventyrvegen AS | Real estate | 2021 |
| Evo Tjenester AS | Administrative & support | 2020 |