| Snelleberg AS | Real estate | 2012 |
| Solblomen AS | Financial services | 2018 |
| Solhagen Invest AS | | 2022 |
| Solhei AS | Professional & scientific | 2016 |
| Soma Prime AS | Other services | 2025 |
| Sorensen Holding AS | | 2026 |
| Spareland AS | Administrative & support | 1989 |
| Spinnwill Medieproduksjon AS | Professional & scientific | 2020 |
| Sso Eiendom AS | Real estate | 2025 |
| Steinrøyså Holding AS | Construction | 2023 |
| Stokland Bygg AS | Construction | 2020 |
| Studio Design-Eiendom AS | Real estate | 2022 |
| Studio Design-Interiør AS | Professional & scientific | 2000 |
| Ståhei AS | | 2020 |
| Stødig Eiendom AS | Real estate | 2021 |
| Svihus Invest AS | Financial services | 2017 |
| T Kverneland & Sønner AS | Manufacturing | 1986 |
| T-Bone Steak & Milk Da | Agriculture & fishing | 2007 |
| T.K.Bygg AS | Construction | 2017 |
| T.Nygaard Holding AS | | 2025 |
| T.Pedersen Holding AS | Manufacturing | 2023 |
| Tailorheaven AS | Wholesale & retail | 2012 |
| Tamo-Invest AS | | 2026 |
| Teel-Finn AS | Other services | 2004 |
| Teel-Finn Holding AS | Other services | 2008 |
| Teknisk VVS AS | Construction | 2018 |
| Teknoper AS | Professional & scientific | 1990 |
| Termokraft Energi AS | Professional & scientific | 2025 |
| TG & T AS | Professional & scientific | 2021 |
| Thelon AS | Financial services | 2013 |
| Tjuvholmveien AS | Real estate | 2021 |
| TKS Agri AS | Manufacturing | 2019 |
| TKS Eiendom AS | Real estate | 1973 |
| TKS Eiendom Nærbø AS | Real estate | 2003 |
| Toennesen Holding AS | | 2026 |
| Trollhassel AS | | 2019 |
| Trollvika AS | Health & social care | 2019 |
| Trophycard AS | Professional & scientific | 1986 |
| Trosunit AS | Information & communication | 2022 |
| Truls Holding AS | Financial services | 2006 |
| Tuftegarn AS | Professional & scientific | 2018 |
| Turboskallen AS | | 2024 |
| Urdalen Invest AS | | 2024 |
| Valorem Holding AS | | 2021 |
| Valot AS | | 2015 |
| Vann Avløp & Vedlikehold AS | Construction | 2017 |
| VBK Holding AS | | 2020 |
| Veden AS | Financial services | 2001 |
| Vegalabs AS | Information & communication | 2025 |
| Vegaverse AS | Professional & scientific | 2022 |
| Vegtro Always Success Investment AS | Information & communication | 2022 |
| Vest Frakt AS | Transport & logistics | 2023 |
| Vestad Holding AS | Information & communication | 2005 |
| Vimo Holding AS | Administrative & support | 2016 |
| VLR Invest AS | Manufacturing | 2020 |
| Voxo Da | Wholesale & retail | 2024 |
| Wenche Malmin AS | Real estate | 2009 |
| Ølbergstranda AS | Real estate | 2008 |
| Øsr AS | | 2020 |