| Aaland Management Consulting AS | Professional & scientific | 2020 |
| Amir Frisør AS | Other services | 2021 |
| Ankeret Brygge Eiendom AS | Real estate | 2015 |
| Anowi Ltd Nuf | Administrative & support | 2005 |
| Arve Skilleås AS | Professional & scientific | 1998 |
| Ask Byggtjenester AS | Construction | 2025 |
| Austrått Forsikringssenter AS | Financial services | 2016 |
| Aw Eiendom AS | Real estate | 2023 |
| B 2 Invest AS | | 2016 |
| Bakeri AS | Manufacturing | 2024 |
| Balder Aqua AS | | 2020 |
| Bedre Helse Trondheim AS | Health & social care | 2023 |
| Bil Og Bobilsalg Trondheim AS | Wholesale & retail | 2020 |
| Bilsenteret Bygg AS | Real estate | 1986 |
| Bjugn Auto Ans | Other services | 1986 |
| Bjugn Bilberging AS | Transport & logistics | 2004 |
| Bjugn Bilopphuggeri AS | Wholesale & retail | 2004 |
| Bjugn Bilservice AS | Other services | 2016 |
| Bjugn Bilservice Eiendom AS | Real estate | 2018 |
| Bjugn Dekkservice AS | Other services | 2019 |
| Bjugn Servicesenter AS | Wholesale & retail | 2017 |
| Bjugn Sparebank | Financial services | 1891 |
| Bjugn Taxisentral Da | Transport & logistics | 1995 |
| Bjugn Transport AS | Transport & logistics | 2013 |
| Bjugnveien 24 AS | Real estate | 2014 |
| Bjørklund Eiendom AS | Real estate | 2024 |
| Bjørn C Lien Transport AS | Transport & logistics | 1997 |
| Bjørn Hårstad AS | Construction | 2025 |
| Blaamyra AS | Professional & scientific | 2020 |
| Bm.Entreprenør AS | Transport & logistics | 2019 |
| Braa Bygg AS | Real estate | 1988 |
| Breiosen Veiforening Ba | Real estate | 2003 |
| Brødrene Pedersen Da | Transport & logistics | 1995 |
| Bugge Bil AS | Other services | 2002 |
| Bugge Eiendom AS | Real estate | 2004 |
| Butler AS | Real estate | 2007 |
| Byggteam Fosen AS | Construction | 2017 |
| Byggteam Fosen Eiendom AS | Real estate | 2025 |
| Byggteam Fosen Holding AS | | 2025 |
| Bære Baill Ba | Agriculture & fishing | 2005 |
| Bølge Og Buljong AS | Hospitality | 2025 |
| C3 Security AS | Professional & scientific | 2020 |
| Cmax AS | Wholesale & retail | 2012 |
| Coastrafting AS | Arts & recreation | 2013 |
| Contero AS | Agriculture & fishing | 2016 |
| Dalemark Bygg AS | Construction | 2019 |
| Dijam Pizza & Grillbar Bjugn Da | Hospitality | 2008 |
| Dinsin Eiendom AS | Real estate | 2022 |
| E. Jensen AS | Manufacturing | 2022 |
| Eem Holding AS | | 2024 |
| Eide Bygg AS | Construction | 1990 |
| Eih AS | Information & communication | 2012 |
| Ekset Samdrift Da | Agriculture & fishing | 2008 |
| Elveng Samdrift Da | Agriculture & fishing | 2006 |
| Emil Schanches Gate 8 AS | Real estate | 2024 |
| Emsu Holding AS | | 2023 |
| Erke Eiendom AS | Real estate | 2026 |
| Erklev Eiendom AS | Real estate | 2022 |
| Erklev Maskin & Transport AS | Construction | 2025 |
| Erlend Olden Eiendom AS | Health & social care | 2017 |
| Ervik Grunneierlag Ba | Administrative & support | 2001 |
| Erviks Fiske AS | Agriculture & fishing | 2007 |
| Famak Da | Real estate | 2023 |
| Fantstein AS | Other services | 2024 |
| Fargesenteret Bjugn AS | Wholesale & retail | 1998 |
| FK Eiendom Brekstad AS | Real estate | 2017 |
| Flytos AS | Information & communication | 2025 |
| Fosen Brannservice AS | Administrative & support | 2012 |
| Fosen Fornybar AS | Energy | 2023 |
| Fosen Hagesenter AS | Wholesale & retail | 2003 |
| Fosen Kiropraktorklinikk AS | Health & social care | 2015 |
| Fosen Kjøleservice AS | Real estate | 1996 |
| Fosen Rør AS | Construction | 2014 |
| Fosen Samlesentral Ans | | 1992 |
| Fosen Terapeutiske Senter AS | Health & social care | 2001 |
| Fosen Utbygging AS | Real estate | 2013 |
| Fosen Utleie, Salg Og Montering AS | Administrative & support | 2008 |
| Fosen Ventilasjon AS | Construction | 2013 |
| Fosen Ventilasjon Eiendom AS | Real estate | 2013 |
| Fosen Ventilasjon Holding AS | Real estate | 2013 |
| Fosenhus AS | Construction | 1988 |
| Fosenhus Eiendom 2 AS | Real estate | 2021 |
| Fosenhus Eiendom AS | Construction | 1998 |
| Fosenhus Eiendom Reitan AS | Real estate | 2019 |
| Fosenhus Holding AS | Financial services | 2024 |
| Fosenkraft AS | Energy | 2015 |
| Fosenkraft Eiendom AS | Real estate | 2015 |
| Fosenkraft Elektro AS | Construction | 1998 |
| Fosenkraft Energi AS | Energy | 2001 |
| Fosensmia Ans | Professional & scientific | 1996 |
| Foshaug Gravferd AS | Other services | 1992 |
| G.I.Dueskar AS | Construction | 2026 |
| God Handel AS | Wholesale & retail | 2019 |
| Gras Og Plag AS | Agriculture & fishing | 2021 |
| Grunn Entreprenør AS | Construction | 2025 |
| Gulhuset AS | Wholesale & retail | 1986 |
| Gulv- & Malerservice Fosen AS | Construction | 2015 |
| Gåslunelva Kraftverk AS | Energy | 2000 |
| Ha-Ko Da | Construction | 1997 |
| Hammertek AS | Construction | 2015 |