| Stangeskovene Fetsund AS | Wholesale & retail | 2016 |
| Star Kebab Og Thai AS | Hospitality | 2014 |
| Star Kebab Og Thai Fetsund AS | Hospitality | 2025 |
| Stein Schultz AS | Real estate | 2005 |
| Sterke Poter AS | Other services | 2025 |
| Stigen Boligtakst AS | Professional & scientific | 2016 |
| Storemyr & Lille AS | | 2026 |
| Strindin Invest AS | Financial services | 2014 |
| Strut Profiles AS | Wholesale & retail | 2024 |
| Strømmen Legekontor AS | Health & social care | 1994 |
| Studio Spire AS | Professional & scientific | 2024 |
| Supportiva AS | Professional & scientific | 2024 |
| Svanstrøm Holding AS | | 2025 |
| Sveen Bil AS | Other services | 1995 |
| Sveen Bil Invest AS | Other services | 2021 |
| Sveiseverksted Bjørn Bjørnstad AS | Manufacturing | 2005 |
| Svitel AS | Hospitality | 2025 |
| Swenor Import AS | Wholesale & retail | 2014 |
| Synnax AS | Real estate | 2008 |
| Synnax Holding AS | Real estate | 2005 |
| SYV8SEKS AS | Health & social care | 2012 |
| Sætrevei Eiendom AS | Real estate | 2018 |
| Søndre Løken AS | Real estate | 2017 |
| Søndre Løken Gård Utvikling AS | Real estate | 2017 |
| Sørum Og Fet Veterinærkontor AS | Professional & scientific | 2018 |
| T Hovland Holding AS | | 2025 |
| T&B Eiendom AS | Real estate | 2016 |
| Tami AS | Wholesale & retail | 2021 |
| Tb-Import AS | Wholesale & retail | 2007 |
| TBB Invest AS | Real estate | 2015 |
| TCK Service AS | Wholesale & retail | 2024 |
| Tech-Ko Hansen AS | Professional & scientific | 2002 |
| Tecpro AS | Administrative & support | 2007 |
| Teknisk Rørkontroll AS | Construction | 2022 |
| Teruni AS | Administrative & support | 2005 |
| Tete Eiendom AS | Real estate | 2015 |
| Th.S.Entreprenør AS | Construction | 2019 |
| The Fisherman AS | | 2021 |
| Thor Smart AS | Information & communication | 2024 |
| Timi Alt I 1 AS | Construction | 2024 |
| Tind Trading AS | Wholesale & retail | 2024 |
| Ting Til Hund AS | Wholesale & retail | 2026 |
| Titan Security AS | Administrative & support | 2025 |
| TLL Regnskap AS | Professional & scientific | 2005 |
| Tmy AS | | 2024 |
| Tradeco Sikkerhet AS | Construction | 2009 |
| Tre Kroner AS | Real estate | 2021 |
| Treform Packaging AS | Wholesale & retail | 2020 |
| Tron Eiendom AS | Real estate | 2012 |
| Tropicana Sol AS | Other services | 1991 |
| TS Bolt AS | Wholesale & retail | 2018 |
| Tuni AS | Real estate | 1984 |
| Tuvis Invest Nuf | Real estate | 2007 |
| Tweedy Todd Da | Manufacturing | 2015 |
| Tynn Holding AS | Professional & scientific | 2021 |
| Tyskeberget AS | | 2026 |
| Tysnes Invest AS | Professional & scientific | 1985 |
| Unik Eiendom AS | Real estate | 2005 |
| Uno Mat AS | Wholesale & retail | 2004 |
| Vakthusfjellet Vann Og Avløpslag SA | Water & waste | 2017 |
| Varsjøen Andelslandbruk Da | | 2026 |
| Vaughan Capital AS | | 2026 |
| VB Holding Invest AS | Construction | 2022 |
| Veiby Ventures AS | | 2019 |
| Veilaget Riddersvingen Samvirkeforetak SA | Real estate | 2018 |
| Velterop Eiendom AS | Real estate | 2024 |
| Velterop Holding AS | Wholesale & retail | 2024 |
| Veolia Pet Norge AS | Manufacturing | 2019 |
| Vertshusbussen AS | Transport & logistics | 2022 |
| Vethe AS | Construction | 2005 |
| View Boligstyling AS | Professional & scientific | 2016 |
| Viken Eiendom AS | Real estate | 2015 |
| Viking Flytte Service AS | Administrative & support | 2021 |
| Virtuell Eiendom AS | | 2021 |
| Vitalijos Katunskytes Labdaros Ir Paramos Fondas | Health & social care | 2026 |
| Volberg Gulvstøp AS | Construction | 2012 |
| Volle Kapital AS | Financial services | 2011 |
| Warå Mølle 2 AS | Real estate | 2021 |
| Warå Mølle Holding AS | Real estate | 2021 |
| WBR Invest AS | | 2020 |
| Web AS | Real estate | 1987 |
| Winje Invest AS | | 2018 |
| X Auto AS | Wholesale & retail | 2025 |
| X Bilsenter AS | Wholesale & retail | 2021 |
| X-Pulse AS | Professional & scientific | 2019 |
| Xnor Studios AS | Information & communication | 2026 |
| Xource Group AS | Professional & scientific | 2019 |
| Yung Holding AS | Hospitality | 2014 |
| Zorro & Falco AS | Administrative & support | 2023 |
| Åse Holding AS | | 2020 |
| Åsmarkvegen 2A AS | Real estate | 2026 |
| Ølmeister Import AS | Wholesale & retail | 2025 |
| Øst Asfalt AS | Construction | 2025 |
| Øst Asfalt Holding II AS | | 2025 |
| Øst Asfalt Invest AS | | 2025 |
| Østavind AS | Wholesale & retail | 2025 |