| Fåset Sagbruk AS | Manufacturing | 2022 |
| Fåset Vannverk SA | Water & waste | 1975 |
| G Grønn AS | Wholesale & retail | 2025 |
| Git Ole Albert Dalen AS | Information & communication | 2015 |
| Gjelten Eiendom AS | Real estate | 2012 |
| Gjelten Graveservice Da | Construction | 2006 |
| Glomtun SA | Real estate | 1975 |
| Glåma Og Tunna Elveeierlag SA | Real estate | 1960 |
| Glåmveien Eiendom AS | Real estate | 2015 |
| Greger Holding AS | Real estate | 2005 |
| Grønnegaten 63 AS | Real estate | 1981 |
| Grønnfjellia - Havern Utmarkslag SA | Real estate | 2011 |
| H3 Eiendom AS | Real estate | 2025 |
| H3M Holding AS | Professional & scientific | 2004 |
| H3M Sport AS | Wholesale & retail | 2004 |
| Hagen Eiendom AS | Real estate | 1994 |
| Harsjøen Eiendom AS | Real estate | 2021 |
| Harsjøen Maskinutleie AS | Administrative & support | 2020 |
| Harsjøen Tveråen Utleiebygg AS | Real estate | 1993 |
| Heidrun AS | Manufacturing | 2012 |
| Hekajø AS | Professional & scientific | 2007 |
| Hektoen Holding AS | Real estate | 2003 |
| Hektoen Invest AS | Real estate | 2014 |
| Hektoengården AS | Real estate | 2003 |
| HM2 Eiendom AS | Real estate | 2024 |
| Hobdsetra Og Vola Beitelag SA | Agriculture & fishing | 2015 |
| Holmen Motorservice AS | Other services | 2008 |
| Hugudal Vannverk SA | Water & waste | 2010 |
| Hund Og Friluftsgleder AS | Agriculture & fishing | 2024 |
| Husfliden Tynset AS | Wholesale & retail | 1994 |
| Hypex Bio Norge AS | Wholesale & retail | 2021 |
| Høvo AS | Transport & logistics | 2020 |
| Ijt AS | | 2021 |
| Industrivn. 9 AS | Real estate | 2025 |
| Ingeniørfirma Bjørn Krutå AS | Real estate | 1983 |
| Innlandet Fornybar AS | Energy | 2023 |
| Innlandet Fornybar Holding AS | Professional & scientific | 2023 |
| Innlandet Fornybar Kile AS | Energy | 2024 |
| Innlandet Fornybar Løvbergsmoen AS | Energy | 2024 |
| Innlandet Fornybar Måna AS | Energy | 2024 |
| Innlandet Fornybar Prosjekt Da | Professional & scientific | 2024 |
| Innlandet Fornybar Vang AS | Energy | 2024 |
| Innlandet Fornybar Øvre Vang AS | Energy | 2024 |
| Interiørdesign Ans | Wholesale & retail | 1990 |
| Investron AS | Financial services | 2005 |
| Isocell Tynset AS | Construction | 2016 |
| J. Mælen AS | | 2019 |
| Jensenget Holding AS | | 2023 |
| Jess-Bygg AS | Construction | 2013 |
| Jess-Bygg Eiendom AS | Real estate | 2015 |
| Jess-Bygg Holding AS | Construction | 2009 |
| Jordet Maskin AS | Wholesale & retail | 2014 |
| K. Sørhus Holding AS | Real estate | 2021 |
| K. Torkzad Holding AS | Health & social care | 2014 |
| Kaak 2025 AS | Construction | 2020 |
| Kaevar AS | Professional & scientific | 2023 |
| Kebab House Ceran AS | Hospitality | 2023 |
| Ken Olav Phillips AS | Real estate | 2005 |
| Kiropraktor Kjerstin Kvisle AS | Health & social care | 2022 |
| Kjæreng Samdrift Da | Agriculture & fishing | 2001 |
| Kjølmoen Park AS | Real estate | 2012 |
| Kleffelgård Holding AS | Financial services | 2018 |
| Klive AS | Energy | 2019 |
| Knocs Blasting AS | Wholesale & retail | 2008 |
| Kolstad Investor AS | Real estate | 2007 |
| Konsta AS | | 2016 |
| Krapter AS | Energy | 2023 |
| Krokveien SA | Real estate | 2020 |
| KSS Holding AS | Real estate | 2005 |
| Kvennstøa Boliggrend AS | Real estate | 2010 |
| Kvikne Autosenter AS | | 2018 |
| La Famiglia Tynset AS | Hospitality | 2020 |
| La Vida AS | Hospitality | 2012 |
| Landbrukets Hus SA | Hospitality | 1992 |
| Landbrukstjenester Nord Østerdal SA | Agriculture & fishing | 1995 |
| Lars Olav Harsjøen Entreprenør AS | Construction | 2019 |
| Larsen & Waagan Eiendom AS | Real estate | 2008 |
| Larsen & Waagan Karosseri Og Lakk AS | Other services | 2001 |
| Laty Eiendom Ans | Real estate | 1997 |
| Leiran-Låggia Utmarkslag SA | Agriculture & fishing | 2023 |
| Loftus Holding AS | | 2025 |
| Lonås Beitelag SA | Agriculture & fishing | 2006 |
| Loza AS | Wholesale & retail | 2024 |
| Lunsæter & Vinsrygg AS | Agriculture & fishing | 2024 |
| M Nygjelten Holding AS | | 2026 |
| Magnildalen Utmarkslag SA | Real estate | 1992 |
| Magnilsjøan Grunneierlag SA | Real estate | 2008 |
| Malermester Jan Larsen AS | Construction | 2016 |
| Marm AS | Hospitality | 2023 |
| Martin RK Holding AS | | 2024 |
| Marun AS | Real estate | 2000 |
| Max Energi AS | Wholesale & retail | 1991 |
| Maximite Tynset AS | Professional & scientific | 1998 |
| Medicus Eiendom 2 AS | Real estate | 2019 |
| Medicus Eiendom AS | Health & social care | 1993 |
| Meierigata 6 Eiendom AS | Real estate | 2022 |
| Meskano AS | Health & social care | 2024 |
| Meskano Holding AS | Health & social care | 1992 |
| Meskano Kompetanse AS | Administrative & support | 2024 |
| MG Malerfirma AS | Construction | 2018 |