| Bråholmen Handelspark AS | Real estate | 2019 |
| Brøndbo Invest AS | Real estate | 2020 |
| Brøndbo Og Nykvist Byggservice AS | Construction | 2001 |
| Bugge Taxi AS | Transport & logistics | 2025 |
| Byggingeniør Einar Olsen AS | Construction | 1997 |
| Byggmester Thor Bergum AS | Construction | 1997 |
| Byggom AS | Construction | 2024 |
| Bøndernesvegen 1B Og 3 AS | Real estate | 2023 |
| Børgersen Tre & Hogst AS | Agriculture & fishing | 2024 |
| Børstad Blikk AS | Construction | 2026 |
| Børstad Blikk AS | Construction | 1990 |
| Børstad Blikk Holding AS | | 2026 |
| Børstad Hotel AS | Real estate | 1990 |
| Cactus AS | Professional & scientific | 2020 |
| Camwik Invest AS | | 2020 |
| Care Treningssenter Namsos AS | Arts & recreation | 2015 |
| Carl Gulbransons GT 15 AS | Real estate | 1962 |
| Catena Invest AS | | 2022 |
| CC Holding AS | Real estate | 2014 |
| Celest Invest AS | | 2017 |
| Celins Los AS | Health & social care | 2025 |
| CG GT 3 Ans | Real estate | 2015 |
| Chikita AS | Other services | 1988 |
| Chill AS | Other services | 2013 |
| China Palace AS | Hospitality | 1990 |
| Ciro Namsos AS | Wholesale & retail | 2009 |
| Cirro Limited Nuf | Information & communication | 2021 |
| Cox Consulting AS | Professional & scientific | 2026 |
| Credo Bygg AS | Real estate | 2012 |
| Credo Eiendom AS | Real estate | 2005 |
| D Viken AS | Arts & recreation | 2026 |
| Daas Holding AS | Real estate | 2023 |
| Dahlberg Transport AS | Transport & logistics | 2002 |
| Danwo AS | Health & social care | 2017 |
| Darnoc Holding AS | Real estate | 2024 |
| Davidsen Invest AS | | 2026 |
| Davidsen Multiservice AS | Construction | 2026 |
| Davidsen Utleie AS | Real estate | 2024 |
| Dci Holding AS | Real estate | 2026 |
| Dci Tannpleie AS | Health & social care | 2026 |
| Delesenteret AS | Wholesale & retail | 2013 |
| DF Shipinvest AS | Administrative & support | 2026 |
| Din Frisør AS | Other services | 2001 |
| Dogmom Hund & Hobby AS | Wholesale & retail | 2023 |
| Doktor Nordseth AS | Health & social care | 2020 |
| Doogee Nordic AS | Wholesale & retail | 2017 |
| Doublefood AS | Hospitality | 2016 |
| Dplan AS | Professional & scientific | 2008 |
| Dråpen Fjordbad AS | Administrative & support | 2021 |
| E Glømmen Holding AS | | 2024 |
| E Pedersen Invest AS | | 2026 |
| Ec Frisør AS | Other services | 2021 |
| Economy Konsulenttjenester AS | Professional & scientific | 2024 |
| Economy Kontortjenester AS | Professional & scientific | 2024 |
| Economy Regnskap AS | Professional & scientific | 2024 |
| Edge Datacenters Norway AS | Information & communication | 2018 |
| Ee Consulting AS | Professional & scientific | 2021 |
| Efor AS | Financial services | 2014 |
| EIENDOMSUTVIKLER1 AS | Real estate | 2012 |
| Eja Invest AS | Real estate | 2019 |
| Eke Invest AS | | 2026 |
| Elba Gruppen AS | Administrative & support | 2025 |
| Elba Maskin AS | Administrative & support | 2025 |
| ELD1EIENDOM AS | Real estate | 2012 |
| Elden Handel AS | Wholesale & retail | 2025 |
| Elden Helse AS | Health & social care | 2024 |
| Eldorado Kantine Og Catering AS | Hospitality | 2018 |
| Elektroservice AS | Construction | 1996 |
| Elektroservice Holding AS | | 2025 |
| Elias Viken Holding AS | | 2024 |
| Elkjøp Fosen AS | Wholesale & retail | 2013 |
| Elkjøp Helgeland AS | Wholesale & retail | 2013 |
| Ellemelle Namsos AS | Other services | 1991 |
| Ellipse AS | | 2020 |
| Elmidt AS | Construction | 2019 |
| Elmidt Eiendom AS | Real estate | 2024 |
| Elsikkerhet AS | Construction | 1996 |
| Eltric AS | Construction | 2012 |
| Emi AS | Financial services | 2005 |
| Emo Eiendom AS | Real estate | 2013 |
| Enchantés AS | Wholesale & retail | 2024 |
| Enecharge AS | Professional & scientific | 2022 |
| Enklere Ledelse AS | Professional & scientific | 2018 |
| Ep Renhold AS | Administrative & support | 2021 |
| Epic Noise AS | Arts & recreation | 2024 |
| Erik Sandnes AS | Wholesale & retail | 1970 |
| Es Prosjekt AS | Real estate | 2023 |
| Esol AS | Professional & scientific | 2015 |
| Espen Husvåg AS | Administrative & support | 2002 |
| Et Lass Me Stein World Wide Da | Arts & recreation | 2013 |
| Even Heia Invest AS | | 2021 |
| Ex Nihilo AS | | 2024 |
| Famstudio AS | Wholesale & retail | 2017 |
| Fevågveien 307 AS | Real estate | 2025 |
| Finn Christiansens Veg 1 AS | Real estate | 2018 |
| Fjellets Elektro Eiendom AS | Real estate | 1985 |
| Fjordvegen 18 AS | Professional & scientific | 2013 |
| Flatanger Hyttepark AS | Real estate | 2001 |
| Flatholmen AS | Real estate | 2010 |
| Flatholmen Holding AS | Real estate | 2020 |