| Søvde Invest AS | | 2024 |
| T Kjus Eiendom AS | Real estate | 2025 |
| T.Joh Holding AS | Real estate | 2015 |
| Tailwind R&D AS | Information & communication | 2010 |
| Taksering Private Holding AS | | 2021 |
| Takstverket AS | Professional & scientific | 2023 |
| Tannlege Christoffer Andresen AS | Health & social care | 2025 |
| Tannlege Truls G. Hilland AS | | 2006 |
| Tantes Holding AS | Other services | 2011 |
| Tao's Utvikling AS | Real estate | 2016 |
| Tarandus Consulting AS | Professional & scientific | 2009 |
| Tarik Invest AS | | 2020 |
| Tasty Bite AS | Hospitality | 2012 |
| Tat Finans AS | Financial services | 2005 |
| Tat Holding AS | Financial services | 2005 |
| Team Investor AS | Financial services | 2005 |
| Technomodule AS | | 2021 |
| Tecnorace AS | Professional & scientific | 2017 |
| Teje Holding AS | Financial services | 2005 |
| Terrys Helping Hands AS | Construction | 2015 |
| TF Venture AS | | 2025 |
| The Consulting Group AS | Professional & scientific | 2023 |
| The Gemini Partnership AS | Professional & scientific | 2007 |
| The Room Bærum AS | Education | 2026 |
| Thevito AS | Health & social care | 2021 |
| Tho Design Av Nina Og Lisbeth Thoresen Ans | Professional & scientific | 1999 |
| Thomas Leker Bekkestua AS | Professional & scientific | 2019 |
| Thomas Leker Holding AS | Wholesale & retail | 2005 |
| Thorhus AS | Professional & scientific | 2005 |
| Thøgersen Eiendom AS | | 2005 |
| Timbr AS | Professional & scientific | 2015 |
| Tinde Eiendom AS | Professional & scientific | 2013 |
| Tisiphone AS | | 2012 |
| TJN Invest AS | Financial services | 2005 |
| TKM Entreprenør AS | Professional & scientific | 2025 |
| TMW Holding AS | Real estate | 1957 |
| To the Talk Software AS | Information & communication | 2022 |
| To-Tom-Fire AS | | 2021 |
| To-Tom-To AS | | 2024 |
| Tobiasso Invest AS | Professional & scientific | 2014 |
| Tocaba AS | Real estate | 2007 |
| Tollehaugen Holding AS | Financial services | 2015 |
| Tophino Da | Wholesale & retail | 2023 |
| Toppgolf AS | Arts & recreation | 1997 |
| Toralwi AS | Financial services | 2006 |
| Total Oppussing Ans | Construction | 2006 |
| Traintomaster AS | Wholesale & retail | 2016 |
| Transky AS | Professional & scientific | 2026 |
| Trena AS | Financial services | 2010 |
| Trippel-I AS | | 2021 |
| Trollenykjen AS | | 2023 |
| Trond Hilde AS | | 2005 |
| True Node AS | Information & communication | 2023 |
| True North AS | | 2019 |
| Trybi AS | Construction | 2005 |
| Trygg Assurance AS | | 2002 |
| Tryggere Bolighandel AS | Professional & scientific | 2024 |
| Trøkk.Run AS | Wholesale & retail | 2026 |
| TTS Holding AS | | 2005 |
| Tunhop AS | | 2020 |
| Twha Invest AS | Financial services | 2017 |
| Twirlcap AS | | 2025 |
| Tåkeslottet AS | Professional & scientific | 2005 |
| Uedanorge AS | Professional & scientific | 2023 |
| Uhero AS | Information & communication | 2025 |
| Unime AS | Health & social care | 2018 |
| Universal Players Global Norge AS | Education | 2020 |
| Upgrade Services AS | Real estate | 2015 |
| Urkraft Nor AS | Real estate | 2019 |
| Urogyndata AS | Information & communication | 2002 |
| V-Stølen Holding AS | | 2023 |
| Vakon AS | Professional & scientific | 2026 |
| Valentia AS | Financial services | 2013 |
| Valentin Invest AS | | 2019 |
| Valeur Holding AS | | 2024 |
| Valkyriegaten 7 Eiendom AS | Real estate | 2017 |
| Valores AS | Professional & scientific | 2014 |
| Valuegarden AS | Real estate | 2005 |
| Vannbrett AS | Wholesale & retail | 2023 |
| Vapas AS | Professional & scientific | 1993 |
| Vekstfosa AS | | 2025 |
| Veline Holding AS | | 2019 |
| Veloverveid AS | Professional & scientific | 2023 |
| Vermedal AS | Professional & scientific | 2022 |
| Vertikale AS | Manufacturing | 2026 |
| Vertikan AS | Professional & scientific | 1996 |
| Vest Holding AS | | 1998 |
| Vest Klinikk AS | Health & social care | 2019 |
| Vetles AS | | 2024 |
| Via Veneta AS | Wholesale & retail | 2011 |
| Vibsto AS | Professional & scientific | 2025 |
| Vica Capital AS | | 2025 |
| Victoria Holding AS | Real estate | 1984 |
| Vilberg AS | Wholesale & retail | 1985 |
| Vilinka AS | Financial services | 2005 |
| Villa Bekk AS | Hospitality | 2019 |
| Vint AS | Information & communication | 2000 |
| Vinterly Invest AS | Information & communication | 2021 |
| Virtual Game Worlds AS | Information & communication | 2008 |
| Virtù AS | Professional & scientific | 2016 |