| 705 Senteret AS | Real estate | 2014 |
| Aas Olsen Maskin AS | Construction | 2018 |
| Aki-Holding AS | | 2026 |
| AS Aas Transport | Transport & logistics | 1980 |
| AS Aas Transport Eiendom | Real estate | 2025 |
| Aspen Sveiseservice AS | Manufacturing | 2026 |
| Aurotech Electronics AS | Professional & scientific | 1990 |
| Aurotech Holding AS | Professional & scientific | 2005 |
| Aurotech Ultrasound AS | Manufacturing | 2003 |
| Basecamp Sylan AS | Hospitality | 2025 |
| Bergehaug Transport AS | Transport & logistics | 1998 |
| Bil Og Landbruk AS | Wholesale & retail | 1997 |
| Bil Og Landbruk Eiendom AS | Real estate | 2016 |
| Brynhildsvoll Anlegg Og Utleie AS | Professional & scientific | 2026 |
| Diverseriet Da | Administrative & support | 1998 |
| Dyrhaug Ridesenter AS | Arts & recreation | 1997 |
| Explore Stugudal AS | Arts & recreation | 2025 |
| Fjelldriv AS | Professional & scientific | 2015 |
| Fjellguiden Tydal AS | Construction | 2016 |
| Foxhill AS | Real estate | 2022 |
| Geotydal AS | Professional & scientific | 2006 |
| Gjerdesenget Holding AS | Financial services | 2005 |
| Grefoss Holding AS | Information & communication | 2005 |
| Grendstad Sag AS | Manufacturing | 1998 |
| Gresslifoss AS | Hospitality | 2014 |
| Græsli Samdrift Da | Agriculture & fishing | 2001 |
| H. J. Kløften AS | Transport & logistics | 2012 |
| Henfallet Holding AS | Financial services | 2013 |
| Hillmo Og Græsli Beitelag SA | Agriculture & fishing | 2021 |
| Hilmo Maskin AS | Construction | 2021 |
| Kirkvollen Pilegrimsgård AS | Hospitality | 2017 |
| Kistafoss Skogsveilag SA | Real estate | 1969 |
| Kjølvollvegen Skogveglag SA | Real estate | 1976 |
| Kubjørgveien Skogsveilag SA | Agriculture & fishing | 2002 |
| Lødølja Skogsveglag SA | Real estate | 1982 |
| Løvøen Samdrift Da | Agriculture & fishing | 2004 |
| Løvøen Samdrift Eiendom AS | Administrative & support | 2026 |
| Maskin Og Fritid Grytbakk AS | Administrative & support | 2018 |
| Moen Fellesbeite SA | Agriculture & fishing | 1976 |
| Moheim Camping AS | Hospitality | 2014 |
| Nea Ullspinneri AS | Manufacturing | 2021 |
| Neatun AS | Hospitality | 2012 |
| Nesjø Båtutleie SA | Administrative & support | 1978 |
| Nesjø Vessingsjø Grunneierlag SA | Agriculture & fishing | 1976 |
| Nima Utvikling AS | Real estate | 2022 |
| Norwegian Fish Farms AS | | 2018 |
| PF Support AS | Professional & scientific | 2012 |
| Phaldiecon Forlag Da | Information & communication | 2007 |
| Quantum Enterprises AS | Wholesale & retail | 2021 |
| Riastvegen SA | Real estate | 2009 |
| Ruskåsveien Skogsveilag SA | Real estate | 2010 |
| Salong Karisma AS | Other services | 2010 |
| Seteråa Kraft AS | Energy | 2005 |
| Skaidi Invest AS | Real estate | 2014 |
| Sledbag Norway AS | Professional & scientific | 2016 |
| Stugudal Bygg AS | Construction | 2016 |
| Stugudal Drift AS | Wholesale & retail | 2005 |
| Stugudal Eiendom AS | Real estate | 1997 |
| Stugudal Eiendomsutvikling AS | Real estate | 2026 |
| Stugudal Entreprenør AS | Construction | 2011 |
| Stugudal Håndverk Og Fritid Da | Arts & recreation | 1999 |
| Stugudal Maskin AS | Construction | 2012 |
| Stugudal Stasjon AS | Real estate | 2005 |
| Stugusjøveien Skogsveilag SA | Construction | 1994 |
| Sylan Adventure AS | Administrative & support | 2012 |
| Sylane Hytter AS | | 2013 |
| Sylene Eiendom AS | Hospitality | 1997 |
| Sylene Invest AS | Professional & scientific | 2005 |
| Syltoppen AS | Professional & scientific | 2002 |
| Søstrenes Kammers AS | Hospitality | 2012 |
| Technea AS | Information & communication | 2014 |
| Trimbua AS | Arts & recreation | 2024 |
| Tydal Bygdeservice SA | Administrative & support | 2003 |
| Tydal Data Center AS | Information & communication | 2021 |
| Tydal Datacenter Bolig AS | Real estate | 2024 |
| Tydal Fellesseter SA | Agriculture & fishing | 1968 |
| Tydal Grunneierlag SA | Administrative & support | 1966 |
| Tydal Innkvartering AS | Real estate | 2025 |
| Tydal Løypepreparering SA | Administrative & support | 1988 |
| Tydal Næringsselskap AS | Professional & scientific | 2023 |
| Tydal Ski AS | Arts & recreation | 2012 |
| Tydal Skisenter AS | Arts & recreation | 2003 |
| Tydal Tråkk Og Transport AS | Arts & recreation | 2021 |
| Tydal Utbygging AS | Construction | 2015 |
| Tydal Vektertjenester AS | Administrative & support | 2026 |
| Tydal Bil-Elektro A/S | Wholesale & retail | 1988 |
| Tydal Trappefabrikk A/S | Manufacturing | 1988 |
| Tømmer Og Tynning AS | Agriculture & fishing | 2025 |
| Væla Kraft AS | Energy | 2013 |
| Ørneslia Og Berget Vasslag SA | Water & waste | 2006 |
| Østby Essandveiene Skogsveglag SA | Agriculture & fishing | 1995 |