| Abig Holding AS | | 2024 |
| Adaptive Measurement Systems AS | Professional & scientific | 2016 |
| Ae.Tcob AS | Financial services | 2014 |
| Aen AS | | 2023 |
| Ah Rørleggermester AS | | 2023 |
| AK LANDBRUKSVERKSTED Brdr Stengrundet ANS | Manufacturing | 1989 |
| Akreberg AS | Administrative & support | 2023 |
| Aktiv Salg Og Utleie AS | Wholesale & retail | 2023 |
| Alfa Eiendom AS | Real estate | 1994 |
| Alpinboliger AS | Real estate | 2000 |
| Amerigo AS | Hospitality | 2026 |
| Andreas Akre AS | Professional & scientific | 2020 |
| Angoli Invest AS | | 1997 |
| Anirak AS | | 2020 |
| Anne Og Olavas Møbeloppussing Ans | Manufacturing | 1989 |
| Arne Tøråsen AS | Construction | 1999 |
| Arneborg Eiendom AS | Real estate | 2021 |
| Asg Eiendom AS | Real estate | 2021 |
| Auto Trysil Holding AS | Wholesale & retail | 2021 |
| Autoglans AS | Other services | 2026 |
| Avaxo Holding AS | Health & social care | 2018 |
| Axel Richard Ernmo | Hospitality | 2010 |
| Ann Wenche & Ragnar Haug ANS | Wholesale & retail | 1988 |
| B B Eiendom AS | Real estate | 2007 |
| Bacchanali AS | Real estate | 2000 |
| Bakkes Holding AS | Other services | 2021 |
| Bakketunet Eiendom AS | Real estate | 2004 |
| Bankbygningen AS | Real estate | 2026 |
| BD Trysil Eiendom AS | Real estate | 2012 |
| Bendan AS | Financial services | 2018 |
| Berg & Bryn AS | Construction | 2020 |
| Berg & Bryn Eiendom AS | Real estate | 2020 |
| Berg & Bryn Holding AS | Construction | 2020 |
| Bergeskarven Holding AS | Real estate | 2005 |
| Beru AS | Professional & scientific | 2011 |
| Best Bilsalg AS | Wholesale & retail | 2011 |
| Bikesolutions Scandinavia AS | Administrative & support | 2015 |
| Bingham Holding AS | Arts & recreation | 2008 |
| Bjønn Service AS | Administrative & support | 2019 |
| Bjønnåsen Hyttegrend AS | Real estate | 2006 |
| Bjønnåsen Hyttegrend Og Service AS | Administrative & support | 2008 |
| Bjørn Baastad AS | Construction | 2023 |
| Bjørn Baastad Holding AS | Real estate | 2018 |
| Bjørn Lundberget AS | Other services | 2013 |
| Bno Travel AS | Real estate | 2023 |
| Boligmannen AS | Construction | 1997 |
| Booktrysilonline AS | Administrative & support | 2011 |
| BR. Bakken Eiendom AS | Real estate | 2020 |
| Bringner Holding AS | Real estate | 2016 |
| Brødrene Bakkes Bilverksted AS | Other services | 2021 |
| Bto Service AS | Administrative & support | 2017 |
| Buflod Og Togstad Ans | Agriculture & fishing | 1948 |
| Bushmade AS | | 2000 |
| Busi Experience AS | Administrative & support | 2024 |
| Bygdeberget Holding AS | | 2025 |
| Byggeplan AS | Professional & scientific | 2017 |
| Bygghantverk I Lima AB | Construction | 1997 |
| Byggservice Hedmark AS | Construction | 2018 |
| Bækken Eiendom AS | Real estate | 2001 |
| Bøes Eiendom AS | Real estate | 1989 |
| Børge Granli Management AS | Professional & scientific | 1993 |
| Børsemaker Jota AS | Wholesale & retail | 2014 |
| Børve Consulting AS | Information & communication | 2022 |
| C. Åsheim Invest AS | | 2025 |
| Cafè Rialto Trysil Ans | Hospitality | 2007 |
| Callenholm Holding AS | Professional & scientific | 2016 |
| Carisma Optikk Trysil AS | Wholesale & retail | 2005 |
| CH Gruppen AS | Real estate | 1997 |
| CH Skog AS | Agriculture & fishing | 2006 |
| China Restaurant Trysil AS | Hospitality | 2014 |
| Cold Skills Norway AS | Professional & scientific | 2014 |
| Coop Ferie | Other services | 2021 |
| Csss AS | Administrative & support | 2026 |
| Dag Rønningen Invest AS | Real estate | 2017 |
| Dagligvare Trysil Eiendom Ans | Real estate | 2000 |
| Destinasjon Trysil SA | Administrative & support | 2006 |
| Din Bilhjelp AS | Transport & logistics | 2005 |
| Doas Grill Ans | Hospitality | 1999 |
| Drevdalen AS | Arts & recreation | 2015 |
| Drevfjell AS | Information & communication | 2013 |
| Durin AS | Financial services | 2013 |
| E. Akre Holding AS | | 2023 |
| E26 Eiendom AS | Real estate | 2016 |
| Eae AS | | 2015 |
| Eggen Og Holt AS | Wholesale & retail | 1997 |
| Eksilsolung AS | | 2023 |
| Elessar Eiendom AS | Real estate | 2001 |
| Elg Eiendom AS | Real estate | 2011 |
| Eltrykk AS | Manufacturing | 1981 |
| Eluna Eiendom AS | Real estate | 2001 |
| Emcy Records AS | Information & communication | 2020 |
| Engemoen Grustak AS | Mining & quarrying | 2002 |
| Engerbakk Eiendom AS | Real estate | 2020 |
| Erhal Invest AS | | 2024 |
| Espen Blikstad AS | Education | 2022 |
| Evja Holding AS | Professional & scientific | 2014 |
| Fager Taxi AS | Transport & logistics | 2024 |
| Fageråsen Fjellbygg AS | Real estate | 2020 |
| Fageråsen Fritid AS | Real estate | 1974 |
| Fageråsen Handel Ans | Wholesale & retail | 2006 |