| Aabøe Eiendom AS | Real estate | 2020 |
| Aarhus & Co Ans | Wholesale & retail | 1981 |
| Ajn AS | | 2025 |
| Akb Eiendom AS | Real estate | 2004 |
| Arnøy Reklame & Design Nuf | Professional & scientific | 2007 |
| Artura Eiendom AS | Real estate | 2021 |
| Asbjørn Pedersen AS | Construction | 2015 |
| Autopartner Kragerø AS | Wholesale & retail | 2020 |
| Awo Invest AS | Real estate | 2021 |
| Bada Bing AS | Real estate | 2021 |
| Ballegutta AS | Arts & recreation | 2026 |
| Barland Bygg AS | Construction | 2024 |
| Barland Event AS | Administrative & support | 2013 |
| Barland Holding AS | Construction | 2024 |
| Bergljots Frisør Og Negledesign AS | Other services | 2019 |
| Beslagexperten AS | Manufacturing | 2009 |
| BKD Holding AS | | 2025 |
| Booktech AS | Information & communication | 2022 |
| Bosvik Eiendom AS | Wholesale & retail | 2000 |
| Brua Eiendom AS | Real estate | 1987 |
| Buen Maskin AS | Agriculture & fishing | 2023 |
| Camelo Da | Wholesale & retail | 1996 |
| Campino Sannidal AS | Hospitality | 2017 |
| Cbi AS | Manufacturing | 2022 |
| Culinar Produkter AS | Manufacturing | 1998 |
| Dal Bruk AS | Manufacturing | 2005 |
| E. Fredriksen Eiendom AS | Real estate | 2022 |
| E. Fredriksen Holding AS | Real estate | 2019 |
| Eckholdt Fjellsprengning AS | Construction | 2016 |
| Ef Eiendom AS | Real estate | 2022 |
| Ekregaten 20 AS | Real estate | 2015 |
| El Installasjon Øystein Nilsen AS | Construction | 2001 |
| Entreprenørfirma Leif Øygarden AS | Construction | 1999 |
| Expo Bygg AS | Real estate | 2013 |
| Farsjø AS | Construction | 2019 |
| Farsjø Pukk AS | Mining & quarrying | 2015 |
| FBT Eiendom AS | Real estate | 2023 |
| Flatland Invest AS | | 2026 |
| FLT AS | Wholesale & retail | 2021 |
| Fossen Holding AS | Financial services | 2007 |
| Fossen Invest II AS | Financial services | 2011 |
| Freha Eiendom AS | Real estate | 2013 |
| G Aabøe Holding AS | | 2020 |
| Gamle Sørlandske 74 AS | Real estate | 2020 |
| Georg Tveit AS | Mining & quarrying | 1974 |
| German Bygg AS | Construction | 2025 |
| Gotoft Holding AS | Manufacturing | 2007 |
| Grim Investment AS | Professional & scientific | 2021 |
| GRN Exp AS | Wholesale & retail | 2017 |
| GS Eiendomsutvikling AS | Real estate | 2023 |
| GS Maskin AS | Construction | 2017 |
| GS Maskin Utleie AS | Administrative & support | 2021 |
| Hagvoll Gård AS | Manufacturing | 2023 |
| Halott Eiendom AS | Real estate | 2026 |
| Hogner Invest AS | | 2025 |
| Holtsberg Invest AS | | 2026 |
| Humlestad Østre AS | Agriculture & fishing | 2021 |
| Hydrokleen Bedriftservice AS | Construction | 2023 |
| Im Frisør AS | Other services | 2020 |
| Industriveien 16B Kragerø AS | Real estate | 2021 |
| INDUSTRIVEIEN3 AS | Real estate | 2022 |
| Isaksen Renovasjon AS | Water & waste | 2012 |
| Jaka Eiendom AS | Real estate | 2014 |
| Jaka Handel AS | Wholesale & retail | 2018 |
| Jaka International AS | Wholesale & retail | 2018 |
| Jonskaas Byggservice AS | Construction | 2022 |
| Jonsmyrveien SA | Real estate | 2015 |
| Kai Tveit AS | Manufacturing | 2017 |
| Kaos Trykkeri AS | Manufacturing | 2022 |
| Kenneth Thorsen AS | Construction | 2026 |
| Kiil AS | Construction | 1988 |
| Kiil Holding AS | Wholesale & retail | 2005 |
| Kiil-Sandtangen AS | Wholesale & retail | 2004 |
| Kil AS | | 2025 |
| Kil Eiendom AS | Real estate | 2021 |
| Kivle Holding AS | Financial services | 2005 |
| Kjetil Solvang Holding AS | Construction | 2014 |
| KM Eiendom AS | Health & social care | 2009 |
| Knoll & Tott Vaktmestertjenester AS | Administrative & support | 2020 |
| Kragerø & Drangedal Begravelsesbyrå AS | Other services | 2025 |
| Kragerø Anleggservice AS | Transport & logistics | 2024 |
| Kragerø Arkitekt Og Ingeniørtjenester AS | Professional & scientific | 2026 |
| Kragerø Brønnboring Eiendom AS | Real estate | 2021 |
| Kragerø Hus Og Hytteservice AS | Construction | 2022 |
| Kragerø Industribyggutleie AS | Real estate | 2019 |
| Kragerø Industriutleie AS | Real estate | 2014 |
| Kragerø Maskin Og Opplæring AS | Administrative & support | 2012 |
| Kragerø Maskinering AS | Manufacturing | 2016 |
| Kragerø Næringspark AS | Real estate | 2021 |
| Kragerø Septikservice AS | Water & waste | 2008 |
| Kragerømureren AS | Construction | 2018 |
| Kragerøparken AS | Arts & recreation | 2017 |
| Kragerøvassdragets Grunneierlag | Real estate | 2007 |
| Kristoffersen Dagligvare AS | Wholesale & retail | 2026 |
| Ks-Fokus AS | Professional & scientific | 2019 |
| Laag AS | Wholesale & retail | 2019 |
| Laagasken Equestrian AS | Wholesale & retail | 2023 |
| Lindheim Jordbruksutvikling AS | Administrative & support | 2021 |
| LSM Holding AS | Financial services | 2018 |
| M. Hegland Holding AS | | 2021 |