| 3GJW AS | Real estate | 2024 |
| A. G. Mjøen AS | | 2019 |
| Abelson Holding AS | | 2023 |
| Af Sørlandsbanen Ga-Rp Ans | Construction | 2024 |
| AG Maskindrift AS | Construction | 2026 |
| Almeks AS | Manufacturing | 2004 |
| Alvdal Biovarme AS | Energy | 2011 |
| Alvdal Blikkenslagerverksted AS | Construction | 2002 |
| Alvdal Bryggeri AS | Manufacturing | 2025 |
| Alvdal Bygg AS | Construction | 1997 |
| Alvdal Eiendom AS | Real estate | 2002 |
| Alvdal Graveservice Holding AS | Construction | 2022 |
| Alvdal Handelslag AS | Real estate | 2022 |
| Alvdal Innkjøpslag SA | Wholesale & retail | 1984 |
| Alvdal Maskin AS | Construction | 2010 |
| Alvdal Midt I Væla AS | Information & communication | 2015 |
| Alvdal Rør AS | Construction | 2017 |
| Alvdal Service AS | Wholesale & retail | 2026 |
| Alvdal Skurlag AS | Manufacturing | 2012 |
| Alvdal Takst AS | Real estate | 2009 |
| Alvdal Utmarksråd SA | Real estate | 2022 |
| Alvdal Ved AS | Agriculture & fishing | 2024 |
| Alvdal-Tynset Eiendom AS | Real estate | 2000 |
| Alvdalsdrosja AS | Transport & logistics | 2023 |
| Alvdalskjøkken Da | Manufacturing | 1995 |
| Alvdalsstolpen AS | Manufacturing | 2003 |
| Amundsmoen Holding AS | Real estate | 2020 |
| Anders Gjermundshaug AS | Financial services | 2015 |
| Andreas Gjermundshaug Holding AS | | 2022 |
| Atmation AS | Information & communication | 2024 |
| Aukrust AS | Arts & recreation | 2019 |
| Aumdalen Veilag SA | Real estate | 2021 |
| Alvdal Bok- og Papirhandel A/S | Wholesale & retail | 1976 |
| Bergrønningen Storfekompost AS | Wholesale & retail | 2020 |
| Beryll AS | Professional & scientific | 2018 |
| BF Bygg Alvdal AS | Construction | 1999 |
| Bjerkegården AS | Real estate | 2015 |
| Bjørn Åsen AS | Professional & scientific | 2005 |
| Blåvola Utmarkslag SA | Agriculture & fishing | 2023 |
| Brekka Vannverk SA | Water & waste | 2019 |
| Bygdedyret Bakeri AS | Manufacturing | 2019 |
| Cotech AS | Professional & scientific | 1990 |
| CS Geo AS | Professional & scientific | 2026 |
| Djupdalen Veilag Ba | Real estate | 1987 |
| Dosmil AS | | 2021 |
| Egnund Maskinlag SA | Agriculture & fishing | 2020 |
| Eidsnes Havn AS | Transport & logistics | 2023 |
| Eidsnes Næringseiendom AS | | 2023 |
| Einunndalsfelt 1 Utmarkslag SA | Arts & recreation | 1990 |
| El-Teknikk Norge AS | Construction | 2017 |
| Eleda Norge AS | Construction | 2022 |
| Elstad Invest AS | Real estate | 2015 |
| Engstrøm Mekaniske Verksted Og Ingeniørtjenester AS | Professional & scientific | 2017 |
| Espeland Transport AS | Transport & logistics | 1995 |
| Einar Østby A/S | Wholesale & retail | 1988 |
| Fenris Eiendom AS | Construction | 2008 |
| Figo Holding AS | Real estate | 2008 |
| Fjellregionens Ridehall AS | Arts & recreation | 2017 |
| Fjelltech Da | Wholesale & retail | 2006 |
| Fjellvet AS | Professional & scientific | 2011 |
| Folla Maskinlag SA | Agriculture & fishing | 2013 |
| Frich's Hotel Og Spiseri Alvdal AS | Hospitality | 2001 |
| Furuli Skogsdrift AS | Agriculture & fishing | 2013 |
| Gaia Homes AS | Construction | 2014 |
| Gaia Travel AS | Administrative & support | 2015 |
| Gaia Øst Holding AS | Real estate | 2012 |
| Gaiasenter AS | Real estate | 2012 |
| Gardvikåsen Veilag SA | Real estate | 2017 |
| Garvikåsen Og Omegn Beitelag SA | Agriculture & fishing | 1964 |
| Gjelten Skog Og Maskin AS | Agriculture & fishing | 2022 |
| Gjermundshaug Holding AS | | 2018 |
| Glomma-Folla Beitelag SA | Agriculture & fishing | 1976 |
| Glåma Folla Fiskelag SA | Arts & recreation | 2023 |
| Gløtåsen Bratthøa Beitelag SA | Agriculture & fishing | 2003 |
| Granrud Bilverksted AS | Other services | 1983 |
| Granrud Eiendom AS | Real estate | 2002 |
| Granrud Næringsbygg AS | Real estate | 2016 |
| Grundsetmoen Eiendom AS | Real estate | 2018 |
| Gullmoen-Vardsetra Veilag SA | Real estate | 2022 |
| Handlaft & Tredesign AS | Manufacturing | 2011 |
| Hansæl Holding AS | Construction | 2017 |
| Haus Byrå AS | Professional & scientific | 2000 |
| Heggset Holding AS | | 2024 |
| Hei Klara AS | Professional & scientific | 2023 |
| Hjulgraveren AS | Construction | 2017 |
| Hogg & Slå AS | Construction | 2002 |
| Huldra Håndverk Mat Og Kultur AS | Hospitality | 2014 |
| Husa AS | Construction | 2021 |
| Hytteservice Da | Administrative & support | 2002 |
| Høgåsen Invest AS | Real estate | 2021 |
| Inge TT Holding AS | | 2025 |
| Inger S Salong. Fot Og Hudpleie AS | Other services | 2022 |
| Inn På Tunet Nesteby Øvre AS | Health & social care | 2024 |
| Ivar Thoresen AS | Arts & recreation | 2019 |
| Jan Inge Gjermundshaug AS | Real estate | 2014 |
| Jela Bensin & Kiosk AS | Wholesale & retail | 2005 |
| Jonstad Auto AS | Other services | 2013 |
| K.E.H. AS | Transport & logistics | 2020 |
| Kamei Holding AS | Financial services | 2015 |
| KD Bygg Alvdal AS | Construction | 2022 |