| Agv AS | Real estate | 2025 |
| Andre Budde | Construction | 2007 |
| Birtedalen Aktivitetspark AS | Arts & recreation | 2023 |
| Birtedalen AS | Real estate | 2008 |
| Bondal Eiendom AS | Real estate | 1994 |
| Bondal Holding AS | Real estate | 2005 |
| Bondal Motor AS | Wholesale & retail | 2008 |
| Brattbakken Holding AS | Real estate | 2005 |
| Breivik & Lie Da | Agriculture & fishing | 1996 |
| Buvatn AS | Real estate | 2022 |
| Byggmester Inge Aamlid AS | Construction | 2004 |
| DM Energy AS | Manufacturing | 2018 |
| Equitrans AS | Transport & logistics | 2018 |
| Faun Naturforvaltning AS | Professional & scientific | 2002 |
| Felle Holding AS | Construction | 2021 |
| Finndalen Austhei Beitelag | Agriculture & fishing | 1978 |
| Fjell & Tunnelsikring AS | Construction | 2024 |
| Fjellheimvegen SA | Construction | 2013 |
| FN Eigedom AS | Real estate | 2013 |
| Foldsæ AS | Real estate | 1990 |
| Fossumsanden AS | Hospitality | 2024 |
| FSB Eigendom AS | Real estate | 2020 |
| FSB Felles Holding AS | | 2026 |
| Fyresdal Bed & Breakfast AS | Hospitality | 2020 |
| Fyresdal Dyreklinikk AS | Professional & scientific | 2012 |
| Fyresdal Eiendom AS | Manufacturing | 1998 |
| Fyresdal Kurs Og Leirsted AS | Real estate | 2011 |
| Fyresdal Mat AS | Wholesale & retail | 2023 |
| Fyresdal Mat Holding AS | Wholesale & retail | 2023 |
| Fyresdal Næringshage AS | Professional & scientific | 2013 |
| Fyresdal Rekneskapskontor AS | Professional & scientific | 1987 |
| Fyresdal Sag Og Bygg AS | Wholesale & retail | 1997 |
| Fyresdal Sag Og Bygg Holding AS | Manufacturing | 2026 |
| Fyresdal Skog Og Ved Da | Agriculture & fishing | 2022 |
| Fyresdal Tre AS | Manufacturing | 1991 |
| Fyresdal Utleiebygg AS | Real estate | 1987 |
| Fyresdal Vekst AS | Health & social care | 1993 |
| Fyri Maskinring SA | Agriculture & fishing | 2013 |
| Fyrtre AS | Real estate | 2026 |
| Georg & Olav Gunnar Vik AS | Transport & logistics | 2024 |
| Georg & Olav Gunnar Vik Da | Transport & logistics | 2000 |
| Grindberg Bygg AS | Construction | 2024 |
| Grindberg Trevarefabrikk AS | Manufacturing | 1974 |
| Grunnvik 20 AS | Real estate | 2026 |
| Grunnvik AS | Real estate | 2018 |
| Grunnvik Landhandel AS | Wholesale & retail | 1997 |
| Haflingerhoff Fyresdal Da | Agriculture & fishing | 2005 |
| Hamaren Event AS | Arts & recreation | 2019 |
| HAUGGREND LANDHANDEL DA Karin Bergland og Tone Nygård | Wholesale & retail | 1990 |
| Haugs Håndlaft AS | Construction | 2020 |
| Heggland Daglegvare Da | Wholesale & retail | 1994 |
| Heimleg Interiør AS | Wholesale & retail | 2023 |
| Hunemo Maskindrift AS | Construction | 2024 |
| Høgde AS | Professional & scientific | 2024 |
| Je Klausen AS | Manufacturing | 2012 |
| Jesper Holding AS | Professional & scientific | 2013 |
| Juvet Kraft AS | Energy | 1998 |
| K. I. Invest AS | Transport & logistics | 2022 |
| K.I. Eiendom AS | Real estate | 2023 |
| Kai Heimes | Construction | 2008 |
| Kile Eigedom AS | Real estate | 2007 |
| Kile Holding AS | | 2005 |
| Kile Håndlaft AS | Construction | 2005 |
| Kilegrend Beitelag | Agriculture & fishing | 1978 |
| Kjeddingsteinen SA | Water & waste | 2013 |
| Kjetilåsen Hyttefelt AS | Construction | 2021 |
| Kleivgrend Holding AS | | 2024 |
| Kristines Hesteutstyr Da | Wholesale & retail | 1991 |
| Krossli Maskinentreprenør AS | Construction | 2019 |
| Krossli Singel Og Sand AS | Mining & quarrying | 2020 |
| Lensmannsgatas Vertshus Da | Hospitality | 1990 |
| Libjå Maskindrift Da | Construction | 2016 |
| M&L Eigedom AS | Real estate | 2024 |
| MHM Eiendom AS | Real estate | 2019 |
| MHM Entreprenør & Service AS | Construction | 2017 |
| MHM Holdingselskap AS | Real estate | 2020 |
| Mirko Funk | Construction | 2008 |
| Moland Auto AS | Wholesale & retail | 1990 |
| Moland Eiendom AS | Administrative & support | 2018 |
| Moland Eigendom AS | Administrative & support | 2009 |
| Molandsmoen 19 AS | Real estate | 2022 |
| Molandsmoen 25 AS | Real estate | 2025 |
| Momrak Holding AS | Construction | 2024 |
| Momrak Kraftlag AS | Energy | 2008 |
| Momrak Mesterbygg AS | Construction | 2023 |
| Momrak Verkstad AS | Other services | 2012 |
| Myldr - Energipark Fyresdal AS | Real estate | 2021 |
| Napevegen SA | Real estate | 1973 |
| Nedrebø Maskintjenester AS | Construction | 2019 |
| Opplev Fyresdal AS | Professional & scientific | 2024 |
| Refresco Norway Holding AS | Administrative & support | 2025 |
| Risdal Service AS | Construction | 2017 |
| Rui Kraftverk AS | Energy | 1999 |
| Rørlegger Aslak Seltveit AS | Construction | 2026 |
| Setesdal Teknologipark AS | Real estate | 2017 |
| Signe Greivstad AS | Health & social care | 2015 |
| Silva Consult AS | Professional & scientific | 2019 |
| Silva Holding AS | Professional & scientific | 2014 |
| Silva Maskin & Eiendom AS | Real estate | 2020 |
| Skeimo AS | Construction | 2023 |