| TL Consult AS | Professional & scientific | 2024 |
| To-Tall AS | Professional & scientific | 2012 |
| Tobben Limited Nuf | Transport & logistics | 2025 |
| Tommy Gudmundsen Holding AS | Financial services | 2013 |
| Toni Eiendom AS | Real estate | 2022 |
| Tore Hansen Holding AS | Financial services | 2014 |
| Tosm Holding AS | Financial services | 2018 |
| Tove Othamar Consulting AS | Professional & scientific | 2025 |
| Trailerparts AS | Wholesale & retail | 2019 |
| Trappespesialisten AS | Manufacturing | 1994 |
| Treugården AS | Real estate | 2017 |
| Trond Sveberg Bygg AS | Construction | 1991 |
| Truckspesialisten AS | Wholesale & retail | 2007 |
| Tsam Holding AS | | 2025 |
| TSS Invest AS | | 2026 |
| Tusseknatten AS | Wholesale & retail | 2026 |
| Tyra Eiendom AS | Real estate | 2017 |
| Tømrer Og Vaktmester Per Abrahamsen AS | Construction | 2013 |
| Tønsberg Autoservice AS - Holmestrand | Other services | 2018 |
| Tørkeloftet AS | Professional & scientific | 2020 |
| U.S. Iceplace AS | Hospitality | 2021 |
| Ulleberg Holding AS | | 2019 |
| Ulleberg Invest AS | | 2022 |
| Uncanny Planet AS | Arts & recreation | 2024 |
| Unione AS | Financial services | 2017 |
| Upsell AS | Information & communication | 2023 |
| Vaagrand Da | Wholesale & retail | 2023 |
| Vacon Oyj | Manufacturing | 2008 |
| Vadum Nuf | Health & social care | 2010 |
| Vaktmester-Gruppen AS | | 2013 |
| Vaktmestertjeneste V/Marit Og Bjørn Teigen Da | Administrative & support | 1997 |
| Vector Industries AS | Information & communication | 2025 |
| Venli Homestad Advokatfirma AS | Professional & scientific | 2026 |
| Verosoft AS | Information & communication | 2017 |
| Vest Holst Holding AS | | 2026 |
| Vestfold Autoinvest AS | Wholesale & retail | 2023 |
| Vestfold Bioenergi AS | Energy | 2021 |
| Vestfold Blåseisolering AS | Construction | 2023 |
| Vestfold Gulvavretting AS | Construction | 1986 |
| Vestfold Kran Og Transport AS | Construction | 2021 |
| Vestfold Kran Og Transportsenter AS | Construction | 2025 |
| Vestfold Natur & Maskin AS | Construction | 2025 |
| Vestfold Solskjerming AS | Construction | 2022 |
| Veterinær Der Du Er AS | Professional & scientific | 2025 |
| Vi to Invest AS | Real estate | 2005 |
| Vidar Nilsen Blikk Og Bygg AS | Construction | 1998 |
| Vikastøl Invest AS | Professional & scientific | 2015 |
| Vikveien Holding AS | Professional & scientific | 2022 |
| Villa Felix AS | Agriculture & fishing | 2010 |
| Villa Furu Økonomirådgivning AS | Professional & scientific | 2006 |
| Vind I Seilene AS | Education | 2004 |
| Vinor AS | Wholesale & retail | 2013 |
| Vipnett AS | Information & communication | 2012 |
| Vipnett Invest AS | Wholesale & retail | 2020 |
| VL Småbolig AS | Real estate | 2026 |
| Voldshagan 1 AS | Real estate | 2025 |
| VP Racing AS | Wholesale & retail | 2026 |
| VP Solutions AS | Other services | 2025 |
| VSB24 AS | Real estate | 2025 |
| VVS Senteret AS | Construction | 2007 |
| Våleveien Næringspark AS | Real estate | 2011 |
| Vårem Bil AS | Wholesale & retail | 2017 |
| Weidemanns Gate 4 AS | Real estate | 2010 |
| Weidemannsgt 10 AS | Real estate | 2005 |
| Westhor AS | Real estate | 2009 |
| Westran AS | Professional & scientific | 2008 |
| Wheels on Wheels AS | Wholesale & retail | 2012 |
| WHN Eiendom AS | Real estate | 2005 |
| Wiko Invest AS | | 2020 |
| Wium Holding AS | Real estate | 2021 |
| WK Kapital AS | | 2025 |
| WS Autoinvest AS | Wholesale & retail | 2025 |
| Wuffe Holding AS | Financial services | 2005 |
| Wulff Jensen Invest AS | | 2020 |
| Xtras AS | Construction | 2005 |
| Yaiza AS | Health & social care | 2019 |
| Yy.No AS | Education | 2017 |
| Z Regnskap AS | Professional & scientific | 2012 |
| Zabricius AS | Administrative & support | 2013 |
| Zuprize AS | Information & communication | 2025 |
| Åsgårdstrandveien 630 AS | Real estate | 2024 |
| Åshaugveien 37 AS | Real estate | 2011 |
| Ø Hansen Invest AS | | 2005 |
| Øah Invest AS | Financial services | 2005 |
| Økonomi Informasjon AS | Professional & scientific | 1995 |
| Økoråd Vestfold SA | Professional & scientific | 1949 |
| Østre Solberg AS | Real estate | 2012 |
| Øverli Veien 4 AS | | 2017 |