| Ajt Eigedom AS | Real estate | 2022 |
| Ajt Holding AS | Wholesale & retail | 2021 |
| AS Hotel Dalen | Real estate | 1989 |
| Ask Prosjekt AS | Real estate | 1999 |
| Askje Invest AS | Administrative & support | 2010 |
| Atelier Kalkmaling AS | Wholesale & retail | 2026 |
| Axiona AS | Construction | 2025 |
| Barskor Invest AS | | 2008 |
| Betten & Bakkstaul Invest AS | Real estate | 2003 |
| Betten Invest AS | Real estate | 2005 |
| Bjerke Kapital AS | Administrative & support | 2026 |
| Botnedalen Dosarlag AS | Manufacturing | 2024 |
| Brunvoll Mar-El AS | Manufacturing | 1978 |
| Butikkdrift Dalen AS | Wholesale & retail | 2015 |
| Buøy Camping AS | Hospitality | 2017 |
| Byrte Beitelag SA | Agriculture & fishing | 1999 |
| Byrtedalsvegen SA | Real estate | 1999 |
| C1 Næringspark AS | Real estate | 2022 |
| Cafe Stabia Da | Hospitality | 1993 |
| Colocem AS | Manufacturing | 2019 |
| Crypted AS | Information & communication | 2026 |
| Dag Nordskog AS | Manufacturing | 1990 |
| Dahles Deleservice AS | Wholesale & retail | 1992 |
| Dalen Bed & Breakfast AS | Hospitality | 2016 |
| Dalen Bistro AS | Hospitality | 2025 |
| Dalen Handel AS | Wholesale & retail | 2018 |
| Dalen Hotelldrift AS | Hospitality | 2023 |
| Dalen Mekaniske Produksjon AS | Manufacturing | 2009 |
| Dalen Pukk AS | Construction | 2023 |
| Dalen Rør AS | Construction | 2019 |
| Dalen Service AS | Other services | 1994 |
| Dobot-Nor Ans | Construction | 2007 |
| Dobstan AS | Construction | 2023 |
| Døli-Heibøåi Skogveglag SA | Real estate | 1970 |
| Gasihaug AS | Wholesale & retail | 2018 |
| Geotec AS | Professional & scientific | 2024 |
| Gjerlid Service AS | Wholesale & retail | 2015 |
| Godtland Rør Og Industriservice AS | Construction | 2015 |
| Gullsmed Vinjerui AS | Wholesale & retail | 2020 |
| Habitus Clothing AS | Wholesale & retail | 2024 |
| Hallbjønn Høyfjellssenter AS | Real estate | 2012 |
| Haugen Invest&Holding AS | | 2023 |
| Haugo Sanering & Eiendom AS | Administrative & support | 2018 |
| Haugo Spesialoppdrag AS | Construction | 2021 |
| Heim Haugo AS | Administrative & support | 2014 |
| Heim Haugo Eigedom AS | Real estate | 2021 |
| Heimtun Dalen AS | Wholesale & retail | 2026 |
| Hervassvegen SA | Real estate | 1970 |
| Hom Gave & Interiør Og Cafè AS | Hospitality | 2024 |
| Hommovegen SA | Real estate | 2018 |
| Hovden Verge AS | Other services | 2020 |
| Johre Revisjon AS | Professional & scientific | 2025 |
| Kafè Hallbjønn AS | Hospitality | 2014 |
| Lie Konfeksjon AS | Real estate | 2001 |
| Lio Auto AS | Other services | 1978 |
| Mekan AS | Manufacturing | 2020 |
| Moen. AS | Manufacturing | 2012 |
| N-Con AS | Professional & scientific | 2024 |
| Nira Botanica AS | Wholesale & retail | 2023 |
| Nordbo Invest AS | Professional & scientific | 2024 |
| Nordroc AS | Construction | 2025 |
| Norsjø Panorama AS | Real estate | 2007 |
| Norsk Damteknikk AS | Professional & scientific | 2024 |
| Norwegian Travel Group AS | Administrative & support | 2007 |
| Nøsteriet AS | Wholesale & retail | 2025 |
| Olav Solvang AS | Construction | 1996 |
| Open Systems International AS | Real estate | 1997 |
| Ost Invest AS | Financial services | 2016 |
| Peak Merchandise AS | Wholesale & retail | 2026 |
| Per Stordrange AS | Administrative & support | 2022 |
| Ripilen AS | Real estate | 2021 |
| Rognebu Eiendom AS | Real estate | 1982 |
| S. Vågslid Entreprenør AS | Construction | 2024 |
| Sandok Ringhus Holding AS | Wholesale & retail | 2020 |
| Sentrum Møbler Ans Oddveig Og Harald Anundskås | Wholesale & retail | 1987 |
| Sentrumsbygg Dalen AS | Real estate | 1998 |
| Skafså Bakeri AS | Manufacturing | 2023 |
| Slettetveit Holding AS | Construction | 2025 |
| Sokkelest Invest AS | | 2025 |
| Solli Eiendom AS | Construction | 1992 |
| Sommarkafeen Ans | Hospitality | 1995 |
| Straume Drift AS | Agriculture & fishing | 2019 |
| Svein E. Hagen AS | | 2011 |
| Sør Entreprenør AS | Construction | 2019 |
| T.A.Hagen AS | Professional & scientific | 2024 |
| T.T. Fosli AS | Real estate | 2014 |
| Telemark Kinetics AS | Manufacturing | 2024 |
| Telemark Tekniske AS | Professional & scientific | 2021 |
| Telemark Transport Og Entreprenørsentral AS | Construction | 2008 |
| Telemarkskanalen Skipsselskap AS | Transport & logistics | 2007 |
| Therma A/S | Financial services | 1987 |
| Thor Fine Art Photography AS | Information & communication | 2014 |
| Timland Sveis Og Industriservice AS | Manufacturing | 2017 |
| Tingvoll Maskin AS | Construction | 1989 |
| Tokke DC Campus AS | Information & communication | 2025 |
| Tokke Invest AS | Real estate | 2007 |
| Tokke Taxisentral Da | Transport & logistics | 2004 |
| Tokke Teknologipark AS | Real estate | 1989 |
| Tømrar Erik Midtbø AS | Construction | 2026 |
| Vassdrag AS | | 2013 |