| Rett Ved Helgeroa AS | Wholesale & retail | 2022 |
| Rhe AS | Education | 2025 |
| Rolandskroken Invest AS | | 2022 |
| Roystephansenmusic AS | Information & communication | 2021 |
| S.T.K. Holding AS | Financial services | 2005 |
| Schaanning AS | | 2021 |
| Sjøfryd Holding AS | | 2019 |
| Skandinavisk Institutt for Kommunikologi AS | Education | 1989 |
| Skinnarland Holding AS | | 2025 |
| Slash Eiendom AS | Real estate | 2000 |
| Slash Næring AS | Real estate | 2026 |
| Slash Omsorg AS | Real estate | 2026 |
| Slash Prosjekt AS | Real estate | 2026 |
| Squareone AS | Information & communication | 2024 |
| Steinprodukter AS | Manufacturing | 2006 |
| Steinservice AS | Construction | 2018 |
| Streamline AS | | 2020 |
| STS Consulting AS | Information & communication | 2018 |
| Studio-T AS | Wholesale & retail | 2026 |
| Støy Eiendom AS | Real estate | 2018 |
| Sun Beauty Solstudio AS | Other services | 2018 |
| Søndersrød Dagligvaredrift AS | Wholesale & retail | 2001 |
| Søndersrød Eiendom AS | Real estate | 2014 |
| Søndersrød Holding AS | Financial services | 2005 |
| Søndersrød Holding KD AS | Real estate | 2016 |
| Søndersrød Landhandel AS | Administrative & support | 1979 |
| Søndersrødkroken AS | Wholesale & retail | 2014 |
| T. Manvik Holding AS | Financial services | 2005 |
| Tak Rehab AS | Construction | 2020 |
| Talus AS | Information & communication | 2025 |
| Telemark Massesortering AS | Water & waste | 2025 |
| Terjes Snekkerservice AS | Construction | 2015 |
| Thehe AS | | 2020 |
| Ting I Vann AS | Agriculture & fishing | 2017 |
| To Søstre - AS | Wholesale & retail | 2026 |
| Tonool Invest AS | | 2022 |
| Topp Gym AS | Arts & recreation | 2024 |
| TORKILDS1 Holding AS | | 2024 |
| Tømrer Simen Andersen AS | Construction | 2024 |
| Utsigten AS | Information & communication | 2011 |
| Utsigten Eiendom AS | Real estate | 2017 |
| Utsigten Handel AS | Information & communication | 2012 |
| Utsigten Kapital AS | Real estate | 2017 |
| Vaktmester Og Hageservice AS | Administrative & support | 2020 |
| Vertshuset Sydvesten AS | Hospitality | 2017 |
| Victor Management AS | Professional & scientific | 1991 |
| Vildahl Holding AS | Administrative & support | 2021 |
| Visian AS | Professional & scientific | 2014 |
| Visionrsm AS | Professional & scientific | 2023 |
| Yven Holding AS | Wholesale & retail | 2006 |
| Zeus AS | Transport & logistics | 1987 |
| Øyvind Bakken AS | Professional & scientific | 2006 |