| Storestein AS | | 2018 |
| Storfjell AS | Real estate | 1999 |
| Storfjell Eiendom AS | Real estate | 2021 |
| Stradex AS | Real estate | 1990 |
| Studiosolitaire Holding AS | Financial services | 2017 |
| Sturdy Yachts AS | Wholesale & retail | 2021 |
| Svinevika Syd Vannlag SA | Water & waste | 2023 |
| SW Consult AS | Professional & scientific | 2008 |
| Teemo Support Holding AS | | 2026 |
| Teknisk Forlag Skolebokforlaget AS | Information & communication | 2013 |
| Teknisk Installasjon AS | Construction | 2024 |
| Teknisk Installasjon Holding AS | Construction | 2024 |
| Tell Forlag Og Forlagsservice AS | Information & communication | 1989 |
| Telos AS | Information & communication | 2023 |
| TGH Holding AS | | 2026 |
| The Happy Surfers AS | Administrative & support | 2021 |
| The Play Collective AS | Professional & scientific | 2017 |
| Thomas Bohlin Holding AS | | 2023 |
| Thor Real AS | Real estate | 2021 |
| Tima Holding AS | Real estate | 2022 |
| Tima Invest AS | Financial services | 2017 |
| Tind Eige AS | Real estate | 2020 |
| Tind Prosjekt AS | Real estate | 2020 |
| TIND1 AS | Real estate | 2006 |
| Tor Magne Lund - Legeservice AS | Health & social care | 2024 |
| Trainer Invest AS | Professional & scientific | 2016 |
| Transformer AS | Financial services | 2009 |
| Trivia Holding AS | Wholesale & retail | 2021 |
| Tro Omsorg AS | Health & social care | 2020 |
| Trosvikodden SA | Real estate | 2021 |
| Tunolds Eiendom AS | Real estate | 1998 |
| Turretur AS | Health & social care | 2026 |
| Turretur Asker AS | Health & social care | 2023 |
| Tusen Bygg AS | Construction | 2024 |
| Tyrifjord Turistsenter AS | Real estate | 2006 |
| Tyrifjorden Brygge AS | Real estate | 2006 |
| Tømrermester Falck-Ytter AS | Construction | 2025 |
| Tømrermester Robert Hervard AS | Construction | 2016 |
| Uc III AS | Professional & scientific | 2008 |
| Uniprint AS | Manufacturing | 2021 |
| Unity AS | Professional & scientific | 1994 |
| Upnorth AS | | 2017 |
| Upnorth Invest AS | Information & communication | 2019 |
| Venga Venga AS | | 2026 |
| Vesta Kapital AS | | 2023 |
| Vettre Apotek AS | Wholesale & retail | 2017 |
| Vettre Dyreklinikk AS | Professional & scientific | 2009 |
| Vettre Elektriske AS | Construction | 1986 |
| Vettre Fotklinikk AS | Health & social care | 2022 |
| Vettre Hotelldrift AS | Hospitality | 1999 |
| Vettre Legekontor AS | Health & social care | 2016 |
| Vettre Torg AS | Real estate | 2011 |
| Vettreåsen SA | Real estate | 2009 |
| Vevra AS | Information & communication | 2025 |
| VF Norway AS | Wholesale & retail | 2015 |
| Victory Wines AS | Wholesale & retail | 2022 |
| Vidda Invest AS | Professional & scientific | 2021 |
| Viken Industrier AS | Wholesale & retail | 2024 |
| Viken Regnskapstjenester AS | Professional & scientific | 2020 |
| Viljen Ans | | 1990 |
| Vision Investments AS | Wholesale & retail | 2017 |
| VK15 Regnskap AS | Professional & scientific | 2024 |
| Wabi 5 AS | | 2021 |
| Wasim Harateh AS | Transport & logistics | 2022 |
| Wettre Bryggeri AS | Manufacturing | 2012 |
| Winmill AS | | 2000 |
| With Marine AS | Manufacturing | 1986 |
| Xplorico AS | Information & communication | 2019 |
| Xplorico Communities AS | Professional & scientific | 2016 |
| Yoice AS | Information & communication | 2023 |
| Østenstad Da | Real estate | 2008 |