| Trening for Deg Norge AS | Financial services | 2009 |
| Tronrud Betong AS | Construction | 2019 |
| Tronrud Invest AS | Real estate | 2019 |
| Truls Vold AS | Real estate | 2017 |
| Truls Vold Bygg- Og Graveservice AS | Construction | 2020 |
| Tted AS | Construction | 2008 |
| Tuft Og Omegn Vannforsyning SA | Water & waste | 1915 |
| Tun Eiendom AS | Real estate | 2011 |
| Tømmermesterfirmaet 3 Bygg Da | Construction | 1996 |
| Tømrere Kleven & Narjord AS | Construction | 2021 |
| Tømrermester Bjørn Martin Bamrud AS | Construction | 1988 |
| Tømrermester Ivar Kjennerud AS | Construction | 2012 |
| Tømrermester Næss AS | Construction | 2019 |
| Tømrermester Skjørdal AS | Construction | 2018 |
| U9Q Eiendom AS | Real estate | 2021 |
| Unicum Holding AS | Professional & scientific | 2021 |
| Unity.Dog AS | Education | 2021 |
| Urkraft Holding AS | | 2025 |
| Us Car Parts Da | Wholesale & retail | 1989 |
| Vammen Barnehage AS | Education | 2016 |
| Vammenbær AS | Agriculture & fishing | 2023 |
| Vario Holding AS | Wholesale & retail | 2024 |
| VBC Holding AS | | 2021 |
| Vehagen Vann Og Avløp SA | Water & waste | 2016 |
| Veidrift Hanekleiva BN 3 SA | Real estate | 2020 |
| Veidrift Hanekleiva BN4 SA | Real estate | 2020 |
| Velle Kjeldås Barnehage AS | Education | 2022 |
| Vellis AS | Financial services | 2017 |
| Venari AS | Real estate | 2005 |
| Vertigo Ans | Information & communication | 1995 |
| Vesletun AS | Real estate | 2025 |
| Vestfold Engineering AS | Manufacturing | 2023 |
| Vestfold Vekst AS | Real estate | 2018 |
| Vestre Sande Utmarkslag SA | Real estate | 1882 |
| Vestskogen Sambeitelag SA | Agriculture & fishing | 1983 |
| Via Regalis AS | Professional & scientific | 2025 |
| Viabaltic Norge AS | Transport & logistics | 1994 |
| Vibe Holding AS | | 2025 |
| Viking Tires No AS | Wholesale & retail | 2026 |
| Vinster Custom Vehicles AS | Other services | 2019 |
| Vinther Invest AS | | 2021 |
| Viola Tricolor AS | Education | 2012 |
| Vrålid Holding AS | | 2020 |
| Waki Maskin AS | Wholesale & retail | 2005 |
| Wallinga AS | Information & communication | 2018 |
| Water Environment Services Nuf | Construction | 2009 |
| Webaas Invest AS | Information & communication | 2026 |
| Weberg Eiendomsinvest AS | | 2025 |
| Weberg Holding AS | Professional & scientific | 2022 |
| Wengebo AS | Real estate | 2021 |
| Wessel Consulting AS | Professional & scientific | 2025 |
| Wessel Estate Group AS | Real estate | 2026 |
| Wgas AS | | 2024 |
| Wilko Holding AS | Professional & scientific | 2006 |
| Williams Boat Racing AS | Arts & recreation | 2022 |
| Windrose Norge AS | Wholesale & retail | 2026 |
| Winge Hansen Holding AS | | 2019 |
| Wireframe AS | | 2024 |
| Wirtgen Norway AS | Wholesale & retail | 1993 |
| Wute AS | Professional & scientific | 2015 |
| Yoga Balance AS | Education | 2020 |
| Yolo Kapital Invest Holding AS | | 2024 |
| Åkerholt Agenturfirma AS | Wholesale & retail | 2003 |
| Ærlig Talt Da | Professional & scientific | 2018 |
| Ødegårdsodden Vann Og Avløpslag SA | Water & waste | 2013 |
| Øivinds Marked AS | Wholesale & retail | 2005 |
| Øk Utvikling AS | Construction | 2018 |
| Økologisk Drift AS | Agriculture & fishing | 2003 |
| Øra Industrier AS | | 2021 |
| Østre Sande Grunneierlag SA | Real estate | 1996 |