| Spa Eiendom AS | Real estate | 1998 |
| Spintech AS | Professional & scientific | 2013 |
| Stangvik Eiendom AS | Real estate | 2011 |
| Stavanger Storsenter AS | Real estate | 1990 |
| Stenberg Buss Og Taxi AS | Transport & logistics | 2021 |
| Stenberg Varmepumpe & Service AS | Construction | 2026 |
| Stevret AS | Arts & recreation | 2002 |
| Storebrand Holmensenteret AS | Real estate | 2021 |
| Storebrand Kjøpesenter City Syd AS | Real estate | 1994 |
| Storebrand Luramyrveien 11 AS | Real estate | 2005 |
| Storebrand Luramyrveien 9 AS | Real estate | 2007 |
| Storebrand Tillertorget AS | Real estate | 1977 |
| Storeslem Eiendom AS | Real estate | 2008 |
| Storgata Brattvåg AS | Real estate | 2006 |
| Storgaten 12 Bodø AS | Real estate | 1969 |
| Strengen AS | Professional & scientific | 2024 |
| Strykjernet Oppdal AS | Real estate | 2011 |
| Sund Bredbånd AS | Information & communication | 2002 |
| Sunndal Torg AS | Real estate | 2003 |
| Surnadal Alpineiendom AS | Real estate | 2010 |
| Surnadal Alpinsenter AS | Arts & recreation | 1992 |
| Surnadal Auto AS | Real estate | 2018 |
| Surnadal Betong AS | Manufacturing | 2017 |
| Surnadal Billag AS | Arts & recreation | 2015 |
| Surnadal Biloppretting AS | Transport & logistics | 2012 |
| Surnadal Bilstyling Da | Other services | 2003 |
| Surnadal Båtforening Drivstoff AS | Wholesale & retail | 2020 |
| Surnadal Eiendom AS | Real estate | 2008 |
| Surnadal Fotballhall AS | Real estate | 2023 |
| Surnadal Hagesenter AS | Wholesale & retail | 2012 |
| Surnadal Hamneterminal AS | Real estate | 2016 |
| Surnadal Håndverk AS | Construction | 2022 |
| Surnadal Invest AS | Manufacturing | 2011 |
| Surnadal Næringseiendom AS | Real estate | 2013 |
| Surnadal Næringspark AS | Real estate | 2025 |
| Surnadal Servicesenter AS | Wholesale & retail | 2015 |
| Surnadal Solskjerming AS | Construction | 2019 |
| Surnadal Sushi Og Thai AS | Hospitality | 2026 |
| Surnadal Taxisentral SA | Transport & logistics | 2009 |
| Surnadal Utleieboliger AS | Real estate | 2013 |
| Surnadal Varme & Sanitær AS | Construction | 2002 |
| Sutra AS | Transport & logistics | 1999 |
| Sutra Lastebilverksted AS | Other services | 2003 |
| Sveen Auto AS | Wholesale & retail | 1985 |
| Sveen Mekaniske AS | Manufacturing | 1985 |
| Svolvær Eiendom AS | Real estate | 1997 |
| Svorka AS | Information & communication | 2001 |
| Svorka Energi AS | Energy | 1960 |
| Svorka Fjernvarme AS | Energy | 2005 |
| Svorka Holding AS | Information & communication | 2019 |
| Surnadal Transportsentral AS | Real estate | 1977 |
| Sæterbø Eiendom AS | Real estate | 2015 |
| Sør Boliginvest AS | Real estate | 2022 |
| Sør Tomteutvikling AS | Real estate | 2025 |
| Søya Elveeigarlag SA | Agriculture & fishing | 2021 |
| Søyådalsvegen SA | Real estate | 1971 |
| T Sylte Bil AS | Other services | 2009 |
| T Sylte Eiendom AS | Real estate | 2016 |
| Talgø Logistikk AS | Transport & logistics | 2010 |
| Talgø Møretre AS | Manufacturing | 1997 |
| Tann-Bo AS | Real estate | 1997 |
| Tannbotannlegene AS | Health & social care | 2025 |
| Tannlege Ingrid Andersbakken AS | Health & social care | 2021 |
| Tannlege Lund AS | Health & social care | 2024 |
| Tasta Senter AS | Real estate | 2009 |
| Teigan Maskin AS | Agriculture & fishing | 2015 |
| Tellesbø Karosseri AS | Other services | 1994 |
| Tellesbø Og Ranes Fiskelag AS | Arts & recreation | 2013 |
| Teppebua Øyane & Co | | 1984 |
| Th-Holding AS | Wholesale & retail | 2024 |
| Thon Kjøpesenter Midt AS | Real estate | 1995 |
| Thon Kjøpesenter Molde AS | Real estate | 2004 |
| Thon Kjøpesenter Nord AS | Real estate | 1998 |
| Thon Kjøpesenter Sør AS | Real estate | 1989 |
| Thon Kjøpesenter Vest AS | Real estate | 1977 |
| Thon Kjøpesenter Øst AS | Real estate | 2003 |
| Tillertorget AS | Real estate | 2026 |
| Tir Eiendom AS | Real estate | 2009 |
| Tomo Holding AS | | 2023 |
| Topo Holding AS | | 2025 |
| Tora AS | Construction | 2016 |
| Torghallen Eiendom AS | Real estate | 2007 |
| Torgsenteret AS | Real estate | 2008 |
| Trafikkskolen I Surnadal AS | Education | 2013 |
| Triorob AS | | 2021 |
| Trolldekor AS | Professional & scientific | 2024 |
| Trollheim Arbeid & Inkludering AS | Health & social care | 2019 |
| Trollheim AS | Health & social care | 2007 |
| Trollheim Kurs Og Kompetanse AS | Health & social care | 2019 |
| Trollheimen Bilpleie AS | Other services | 2022 |
| Trollheimen Klatresenter AS | Arts & recreation | 2019 |
| Trollheimen Trafikkskole AS | Education | 2024 |
| Trollheimen Treningssenter AS | Arts & recreation | 2008 |
| Trollheimsexpressen AS | Transport & logistics | 2001 |
| Trollungen Ans | Wholesale & retail | 2003 |
| Tussvikbær AS | Agriculture & fishing | 2022 |
| Unau AS | Hospitality | 2023 |
| Unistyle Nuf | Wholesale & retail | 2006 |
| Utbyggern AS | Real estate | 2003 |
| Utleie Eiendomsinvest AS | Real estate | 2023 |