| Aasen & Elsvatn Regnskap AS | Professional & scientific | 2018 |
| Arbor AS | Manufacturing | 1987 |
| Arbor-Eiendom AS | Real estate | 1956 |
| BBH Maskinentreprenør AS | Construction | 2017 |
| Bjarnefars Tjenester AS | Construction | 2020 |
| BMJ Invest AS | Manufacturing | 2010 |
| Brennbakk Eiendom AS | Real estate | 2006 |
| Brennbakk Transport AS | Transport & logistics | 2003 |
| Børgefjell-Laft AS | Manufacturing | 2022 |
| DAHL96 AS | Hospitality | 2020 |
| Daleng Holding AS | Wholesale & retail | 2026 |
| Daleng Scooter & Service AS | Wholesale & retail | 2011 |
| Deepgene AS | Professional & scientific | 2024 |
| Fix AS | Construction | 2015 |
| Fjellfolket Helgeland SA | Other services | 2006 |
| Goextreme AS | Administrative & support | 2021 |
| Grane Og Hattfjelldal Værholdslag SA | Agriculture & fishing | 1979 |
| Granlid Invest AS | Administrative & support | 2023 |
| Granlid Maskin AS | Administrative & support | 2025 |
| Gyldenbjörk Holding AS | | 2023 |
| Gyldenbjörk Kapitalforvaltning AS | | 2023 |
| Harvassdalen Utmark Da | Real estate | 2005 |
| Hatten Bilservice AS | Wholesale & retail | 2003 |
| Hattfjelldal Eiendom AS | Real estate | 2018 |
| Hattfjelldal Gravferd AS | Other services | 2024 |
| Hattfjelldal Hybelhus AS | Real estate | 2019 |
| Hattfjelldal Kraft AS | Energy | 2007 |
| Hattfjelldal Maskin AS | Construction | 2007 |
| Hattfjelldal Matsenter AS | Wholesale & retail | 1997 |
| Hattfjelldal Melk Da | Agriculture & fishing | 2007 |
| Hattfjelldal Næringsselskap AS | Real estate | 2003 |
| Hattfjelldal Regnskapskontor AS | Professional & scientific | 2003 |
| Hattfjelldal Service- Og Næringsbygg AS | Real estate | 2014 |
| Helgeland Entreprenør & Eiendom AS | Hospitality | 2025 |
| Hoff Verksted AS | Other services | 1990 |
| HSN Drift AS | Hospitality | 2017 |
| Jarel AS | Manufacturing | 1983 |
| JK Elektro AS | Construction | 2004 |
| Kristian Brennbakk AS | Agriculture & fishing | 2019 |
| Kroken Bruk Da | Agriculture & fishing | 2008 |
| Kroken Melk Og Kjøtt Da | Agriculture & fishing | 2026 |
| Maskinlag Hattfjelldal SA | Administrative & support | 2019 |
| Nord Capital Group AS | | 2026 |
| Rune Brennbakk AS | Agriculture & fishing | 2011 |
| Røssvatn Samdrift Da | Agriculture & fishing | 2004 |
| Røssvatn Service Senter AS | Administrative & support | 2021 |
| Sant AS | Hospitality | 2023 |
| Siteservice Norway Limited Nuf | Professional & scientific | 2008 |
| Skansenterasse 7 AS | Real estate | 2017 |
| Susendal Bygdesag AS | Manufacturing | 2021 |
| Susendal Bygdeservice AS | Administrative & support | 2020 |
| Susendal Innkjøpslag SA | Wholesale & retail | 2015 |
| Sæterstad Gård AS | Agriculture & fishing | 1990 |
| Tobo Holding AS | Administrative & support | 2020 |
| Unkervatn Nedre Vei Og Vannlag SA | Water & waste | 2013 |
| Vegforningen Hattfjelldal- Vastansjø | Construction | 1999 |
| Vesterbukt Samdrift Da | Agriculture & fishing | 2005 |
| Viehkie AS | Education | 2020 |
| Villmarksprodukter Da | Manufacturing | 2005 |
| XXX 1 AS | Administrative & support | 2008 |
| Ørjedal Maskin AS | Wholesale & retail | 1987 |