| Sokras Kapital AS | Wholesale & retail | 2023 |
| Sport 1 Holand AS | Wholesale & retail | 2021 |
| Stakkskardet Eiendom AS | Real estate | 2021 |
| Stesund AS | Financial services | 2005 |
| Stig Harry AS | Agriculture & fishing | 1998 |
| Stig Myhre AS | Professional & scientific | 2017 |
| Storgata 17 Rørvik AS | Real estate | 2013 |
| Storgata 2 AS | Real estate | 2013 |
| Stormsteg AS | Administrative & support | 2025 |
| Stram AS | | 2021 |
| Strandgata 3 AS | Real estate | 2023 |
| Strandgata Delikatesse AS | Hospitality | 2023 |
| STS Services AS | Manufacturing | 2015 |
| STT Miljø AS | Transport & logistics | 2019 |
| Sukanda Thaimat AS | Hospitality | 2024 |
| Sulini AS | Professional & scientific | 2026 |
| Sulini Invest AS | Professional & scientific | 2021 |
| Sundsmoen AS | Real estate | 2005 |
| Sylten Dykkertjeneste AS | Agriculture & fishing | 2025 |
| Sylvi Ulsund Holding AS | | 2018 |
| Synto AS | Professional & scientific | 2005 |
| Systembygg Rørvik AS | Construction | 2018 |
| Sæternes Eiendom AS | Real estate | 2018 |
| Sæternes Invest AS | Transport & logistics | 2024 |
| Sæternes Transport AS | Transport & logistics | 2024 |
| Sørneset Holding AS | Financial services | 2005 |
| Sørsida Maskinlag SA | Agriculture & fishing | 2000 |
| Sørsida Utmarkslag SA | Arts & recreation | 2011 |
| Sørvika Mini Camp AS | Hospitality | 2018 |
| Sørø Skipsservice AS | Manufacturing | 2015 |
| Søwi AS | Agriculture & fishing | 2022 |
| T a Nogva Holding AS | | 2020 |
| T.A.K. Sveise - Service AS | Manufacturing | 2017 |
| Taah Holding AS | Real estate | 2021 |
| Talera Nord AS | Professional & scientific | 2020 |
| Tannlege Anja Holthe AS | Health & social care | 2021 |
| Tannlege Reidun Laugen AS | Health & social care | 2012 |
| Tbcm Invest AS | | 2021 |
| Technoyard AS | Professional & scientific | 2024 |
| Teft Abelvær AS | Real estate | 2020 |
| Teft Boligutvikling AS | Real estate | 2019 |
| Teft Eiendomsutvikling AS | Real estate | 2017 |
| Teft Engan AS | Real estate | 2019 |
| Teft Smevikaunet AS | Real estate | 2009 |
| Tekk Elektro AS | Wholesale & retail | 2020 |
| Teknobygget AS | Real estate | 2023 |
| Teknobygget Drift AS | Real estate | 2024 |
| Tema Maskin AS | | 2023 |
| Tema Rørvik AS | Wholesale & retail | 2021 |
| Terboli Eiendom AS | Real estate | 2008 |
| Terboli Invest AS | Real estate | 2005 |
| Thiim AS | Wholesale & retail | 2005 |
| THT Eiendom AS | Financial services | 2005 |
| TN Boligutvikling AS | Real estate | 2016 |
| Tobø Eiendom Ans | Real estate | 2000 |
| Tommie Invest AS | | 2021 |
| Toningsenteret Rørvik AS | Other services | 1996 |
| Trekon AS | Construction | 2024 |
| Trekon Eiendom AS | Real estate | 2024 |
| Trekon Holding AS | Construction | 2024 |
| Trio Barnehager AS | Education | 2023 |
| Trønderbas AS | Agriculture & fishing | 1999 |
| TS Glassfiberservice AS | Manufacturing | 2020 |
| Tsok Sørensen Holding AS | Agriculture & fishing | 2022 |
| Utstyrs Utleien AS | Information & communication | 2021 |
| Vawi AS | Agriculture & fishing | 2021 |
| VCT AS | Professional & scientific | 2025 |
| Vegard a. Ulsund Holding AS | | 2023 |
| Vera Ulsund Holding AS | | 2018 |
| Veterinær Solveig Solberg Melheim AS | Professional & scientific | 2024 |
| Vhiim AS | | 2020 |
| Vibekes Fysio AS | Health & social care | 2007 |
| Vigestad Samdrift Da | Agriculture & fishing | 2011 |
| Vikestad Geitedrift Da | Administrative & support | 2022 |
| Vikket Sjøhus Og Marina AS | Arts & recreation | 2024 |
| Vikna Aviation AS | Administrative & support | 2008 |
| Vikna Eiendom AS | Real estate | 2005 |
| Vikna Invest AS | Professional & scientific | 2003 |
| Vikna Maskin & Betong AS | Construction | 1985 |
| Vikna Maskinlag SA | Administrative & support | 2021 |
| Vikna Pukkverk Da | Mining & quarrying | 1990 |
| Vikna Taxi AS | Transport & logistics | 2013 |
| Viknaslipen AS | Manufacturing | 1999 |
| Viknaslipen Eiendom AS | Real estate | 2023 |
| Vital Rørvik AS | Manufacturing | 2011 |
| Vite Eiendom AS | Real estate | 2016 |
| Viteq AS | Construction | 2013 |
| Viteq Eiendom AS | Real estate | 2023 |
| Viteq Engineering AS | Professional & scientific | 2021 |
| Viteq Farming AS | Agriculture & fishing | 2017 |
| Viteq Holding AS | Construction | 2020 |
| Vito Heim AS | Real estate | 2020 |
| Vivi Invest AS | Real estate | 2014 |
| Viwamedia AS | Information & communication | 2026 |
| VSL Invest AS | | 2021 |
| Vikna byggutleie AS | Real estate | 1978 |
| Wahl Invest AS | | 2024 |
| Walaunet Invest AS | | 2018 |
| Williksen AS | Wholesale & retail | 2021 |
| Williksen Export AS | Wholesale & retail | 2018 |