| MS Havik Eiendom AS | Real estate | 1990 |
| Murmestrene Tisløv AS | Construction | 2015 |
| Myrvik Maskinutleie AS | Administrative & support | 2003 |
| Namdal Autosalg AS | Wholesale & retail | 2024 |
| Namdal Blikk Verksted AS | Construction | 2025 |
| Namdal Elektro AS | Construction | 2009 |
| Namdal Førstehjelp Og Redningsopplæring AS | Education | 2013 |
| Namdal Rørinspeksjon Og Spyling AS | Administrative & support | 2024 |
| Namdal Spyleservice AS | Construction | 2025 |
| Namsen Dyrehospital AS | Professional & scientific | 2022 |
| Namsen Eiendom AS | Real estate | 1995 |
| Namsen Fysioterapi AS | Health & social care | 2018 |
| Namsen Hotell AS | Hospitality | 2010 |
| Namsen Legesenter AS | Health & social care | 2008 |
| Namsen Legesenter Bygg AS | Real estate | 2008 |
| Namsen Panorama AS | Real estate | 2020 |
| Namsos Barnehage SA | Education | 1989 |
| Namsos Bil AS | Wholesale & retail | 2019 |
| Namsos Bil Eiendom AS | Real estate | 2011 |
| Namsos Camping AS | Hospitality | 2018 |
| Namsos Fritid AS | Wholesale & retail | 1991 |
| Namsos Maskin AS | Wholesale & retail | 1986 |
| Namsos Maskin Eiendom AS | Real estate | 2010 |
| Navarvegen 4 AS | Real estate | 2010 |
| Navarveien 6 AS | Real estate | 2009 |
| Navarveien 6 Eiendom AS | Real estate | 2004 |
| NMG AS | Professional & scientific | 2019 |
| NMG Vekst AS | Real estate | 2020 |
| Nord Trøndelag Næringsservice AS | Professional & scientific | 1997 |
| Nordisk Reinskinn Compagnie AS | Manufacturing | 2021 |
| Nordmek Service AS | Wholesale & retail | 2023 |
| Norsk Droneservice AS | Information & communication | 2025 |
| Nortrea AS | Wholesale & retail | 1959 |
| Nova Gulv- Og Malertjenester AS | Construction | 2014 |
| Nøsthaugvegen AS | Construction | 2018 |
| Oddvars Veg Og Gateservice Ans | Construction | 1990 |
| Orbotech Norway AS | Wholesale & retail | 2019 |
| Pele Eiendomsutvikling AS | | 2010 |
| Ppgai AS | Construction | 2001 |
| Ppgai Eiendom AS | Construction | 2017 |
| Pro-Reno AS | Construction | 2026 |
| Proteq AS | Construction | 2020 |
| Psyke AS | Health & social care | 2019 |
| Quantek AS | Other services | 2025 |
| Reitan Multiservice AS | Administrative & support | 2022 |
| Retronic AS | Manufacturing | 1992 |
| Retura NT AS | Water & waste | 2004 |
| Ronny Sævik Eiendom AS | Other services | 2017 |
| Ronny Sævik Holding AS | Other services | 2017 |
| Ronny Sæviks Garasje AS | Other services | 2017 |
| RS Gulv AS | Construction | 2021 |
| Rukam Holding AS | | 2025 |
| Safe Control Road AS | Professional & scientific | 2017 |
| Seem & Glømmen Eiendom AS | Real estate | 2012 |
| Semu AS | Administrative & support | 2022 |
| Siktedukfabrikken AS | Manufacturing | 1986 |
| Sivavegen 10 AS | Real estate | 2018 |
| Sivavegen 16 AS | Real estate | 2019 |
| SK Grave & Utleieservice AS | Construction | 2021 |
| Skomsvoll Leiligheter AS | Real estate | 2022 |
| Slatlem Namsos AS | Other services | 2019 |
| Smines Vannverk SA | Water & waste | 2000 |
| Snekkern Norge AS | Wholesale & retail | 2003 |
| Snippen Bilservice AS | Other services | 1990 |
| Spillum Apotek AS | Wholesale & retail | 2023 |
| Spillum Utvikling AS | Real estate | 2012 |
| Ståltjenester Ans | Manufacturing | 2003 |
| Sunde Transport AS | Transport & logistics | 2012 |
| Supra AS | Transport & logistics | 2023 |
| Svalinn Installation AS | Construction | 2014 |
| Sverre Havik AS | Construction | 1989 |
| SYDVEST1 AS | Professional & scientific | 2012 |
| Sæther Capital AS | | 2026 |
| T3-TRAFIKKSKOLE AS | Education | 2025 |
| Takstforum Midt Norge AS | Professional & scientific | 1993 |
| Takstkontroll AS | Real estate | 2014 |
| Tetlie Transport AS | Transport & logistics | 1998 |
| Tisløv Holding AS | Construction | 2015 |
| Tom Harald Grønevik AS | Wholesale & retail | 2018 |
| Twosome Da | Arts & recreation | 2001 |
| Vesth Holding AS | | 2023 |
| Vibstad AS | Construction | 2010 |
| Wullumstad Eiendom AS | Real estate | 2021 |
| Wågan Holding AS | Wholesale & retail | 2017 |
| Xcape AS | Real estate | 2012 |