| Landbrukstjenester Midt-Trøndelag SA | Agriculture & fishing | 1990 |
| Langseth B AS | Wholesale & retail | 1995 |
| Lia Invest AS | Construction | 2017 |
| Lien Skadetaksering AS | Financial services | 2021 |
| Litjstokkan Invest AS | Real estate | 2022 |
| Liv Laga Entertainment Da | Arts & recreation | 2025 |
| Living Eiendom AS | Real estate | 2010 |
| Living Medical AS | Wholesale & retail | 2016 |
| Lorentsen AS | | 2026 |
| Lundemo Byggservice AS | Construction | 2025 |
| LWS Invest AS | Financial services | 2017 |
| Maleco Eiendom AS | Real estate | 2019 |
| Mato Properties AS | Real estate | 2023 |
| Mekk Eiendom AS | Real estate | 2021 |
| Midt-Norsk Skogrydding AS | Agriculture & fishing | 2011 |
| MLC Holding AS | Construction | 2019 |
| Moslet - Kulset Beitelag SA | Agriculture & fishing | 1972 |
| Motorsenteret Selbu Og Tydal AS | Wholesale & retail | 2016 |
| Nea Akupunktur & Velvære AS | Health & social care | 2022 |
| Nea Betong AS | Manufacturing | 1989 |
| Nea Dyrefor AS | Wholesale & retail | 2023 |
| Nea Eiendom AS | Real estate | 1990 |
| Nea Elveeierlag SA | Real estate | 2010 |
| Nea Entreprenør AS | Construction | 2021 |
| Nea Løypemaskin SA | Arts & recreation | 2008 |
| Nea Radio AS | Information & communication | 1986 |
| Nea Rør AS | Construction | 2014 |
| Neadalen Begravelsesbyrå AS | Other services | 2024 |
| Neaporten AS | Real estate | 2003 |
| Neaslipen AS | Other services | 2012 |
| Nervollveien SA | Real estate | 1975 |
| Nesta Eiendom AS | Real estate | 2014 |
| Nesta Nord AS | Real estate | 2023 |
| Norbit Ems AS | Manufacturing | 1987 |
| Norbye Holding AS | Real estate | 2026 |
| Norsk Blåseisolering AS | Wholesale & retail | 2026 |
| Nåldalsvegen SA | Real estate | 2014 |
| O. Trondseth Rørleggerforretning AS | Construction | 2002 |
| Ofstad AS | Construction | 1989 |
| Orfu Holding AS | | 2025 |
| Per Sjøvold Eiendom AS | Real estate | 2018 |
| Per Sjøvold Holding AS | Professional & scientific | 2018 |
| Per Sjøvold Invest II AS | Professional & scientific | 2020 |
| Per Sjøvold Invest III AS | Professional & scientific | 2020 |
| Powerboost AS | Manufacturing | 2017 |
| Prestegårdsmyra Eiendom AS | Real estate | 2020 |
| Rator AS | | 2023 |
| Ril Solutions AS | Information & communication | 2025 |
| Ringen 214 Sylringen Ba | Agriculture & fishing | 1988 |
| Rolsetveiene SA | Real estate | 2012 |
| Ruma Maskin AS | Wholesale & retail | 2021 |
| Rypejeger Max Holding AS | | 2024 |
| Rønsberg Eiendom AS | Real estate | 2015 |
| Røset AS | Construction | 2011 |
| Røset Eiendom AS | Construction | 1985 |
| Røset Elektro AS | Construction | 2014 |
| S. Uthus Entreprenør AS | Agriculture & fishing | 2017 |
| Samstadveien SA | Real estate | 1984 |
| Selboe Bygg AS | Construction | 1998 |
| Selbu Boligpark AS | Real estate | 2025 |
| Selbu Boligsystem AS | Manufacturing | 1996 |
| Selbu Bygde- Og Hytteservice SA | Administrative & support | 2003 |
| Selbu Byggvare AS | Wholesale & retail | 1996 |
| Selbu Drosjesentral AS | Transport & logistics | 2018 |
| Selbu Egg Da | Agriculture & fishing | 2019 |
| Selbu Energi Eiendom AS | Real estate | 2020 |
| Selbu Energiverk AS | Energy | 1998 |
| Selbu Events AS | Arts & recreation | 2022 |
| Selbu Expressen AS | Transport & logistics | 2012 |
| Selbu Flerbrukshall AS | Real estate | 2014 |
| Selbu Gruppen AS | Real estate | 2022 |
| Selbu Invest AS | | 1989 |
| Selbu Lydforum AS | Information & communication | 2015 |
| Selbu Næringsbygg AS | Real estate | 2025 |
| Selbu Sparebank | Financial services | 1858 |
| Selbu Sparebankbygg AS | Real estate | 2014 |
| Selbu Vedprodukter Ans | Agriculture & fishing | 1997 |
| Selbu Vekst AS | Professional & scientific | 2013 |
| Selbu VVS AS | Construction | 2008 |
| Selbu Ø & R Holding AS | | 2025 |
| Selbu Økonomi & Regnskap AS | Professional & scientific | 2003 |
| Selbu-Trykk AS | Manufacturing | 1974 |
| Selbuhus AS | Real estate | 2020 |
| Selbulan Da | Administrative & support | 2010 |
| Selbusjøen Grunneierlag SA | Real estate | 1965 |
| Selbuskogen Skisenter AS | Arts & recreation | 1988 |
| Selbusporten AS | Wholesale & retail | 2003 |
| Selbusporten Holding AS | Wholesale & retail | 2005 |
| Selbuvotten AS | Real estate | 2020 |
| Selbyggen AS | Information & communication | 1975 |
| Seljåsen Beitelag | Agriculture & fishing | 1977 |
| Sgo Entreprenør AS | Construction | 2015 |
| SGS Eiendom AS | Real estate | 2004 |
| Skogbilveilaget Storbakkåsen SA | Real estate | 2012 |
| Skogsbilveglaget Høgvollvegen SA | Real estate | 2021 |
| Slindvatnet Beitelag SA | Agriculture & fishing | 2015 |
| Solkraft AS | Construction | 2019 |
| Stasjon Samdrift Da | Agriculture & fishing | 2004 |
| Steerage Da | Arts & recreation | 2023 |
| Stjørdal Motorshow AS | Administrative & support | 2019 |