| Torsdatter AS | | 2026 |
| Torvik Holding AS | Real estate | 2014 |
| Total Snekkertjenester AS | Construction | 2025 |
| Tpa Bygg AS | Construction | 2015 |
| Trafikkskole Tønsberg AS | Education | 2021 |
| Treativ AS | Manufacturing | 2018 |
| Trilobite Care AS | Professional & scientific | 2022 |
| Trilobite Industri AS | Professional & scientific | 2022 |
| Trio Takst AS | Professional & scientific | 2011 |
| Trix Frisør AS | Other services | 1998 |
| Trold Holding AS | Real estate | 2009 |
| Tschudi Eiendom AS | | 2021 |
| TT Kontorservice AS | Administrative & support | 2017 |
| Tunsberg Invest AS | | 2021 |
| Tunsberg Mathus & Midtløkken Catering AS | Hospitality | 2015 |
| Two Hundred Company AS | Information & communication | 2022 |
| TWV11 AS | | 2025 |
| Tømmerholt AS | Real estate | 2015 |
| Tømmerholtåsen Avløpslag SA | Water & waste | 2026 |
| Tømrermester Henning Berntsen AS | Construction | 2013 |
| Tønsberg & Færder Marineservice AS | Manufacturing | 2022 |
| Tønsberg Bryggeri AS | Transport & logistics | 2006 |
| Tønsberg Helse Og Forvaltning AS | Financial services | 1996 |
| Tønsberg Mur Og Flis AS | Construction | 2024 |
| Tønsberg Og Nøtterøy Trafikkskole Da | Education | 1991 |
| Tønsberg Tannlegesenter AS | Health & social care | 2022 |
| Tønsberg Tjenester AS | Administrative & support | 2019 |
| Tønsberg Vekst AS | Real estate | 2004 |
| Tønsbergbrygga AS | Construction | 2019 |
| Ull Eiendom AS | Real estate | 2025 |
| Umh AS | | 2012 |
| Unique Mind Esp AS | Education | 2005 |
| Uri Regnskap AS | Professional & scientific | 2023 |
| Valalia Invest AS | Financial services | 2014 |
| Varme Energi AS | Construction | 2013 |
| Varpes Blomster Kaffe Og Tebod Ans | Wholesale & retail | 1991 |
| Vartdal AS | Construction | 1970 |
| Vedlikehold Aad AS | Construction | 2016 |
| Veilaget Kirkeveien 60-84 SA | Real estate | 2019 |
| Veksthuset Bjertnæs AS | Real estate | 2005 |
| Veltrent AS | Education | 2019 |
| Vestcorp 2 AS | Real estate | 2020 |
| Vestcorp AS | Professional & scientific | 2010 |
| Vestfjord Panorama AS | Real estate | 2023 |
| Vestfjorden Bolig AS | Real estate | 1998 |
| Vestfold Båt Og Utleie AS | Administrative & support | 2021 |
| Vestfold Fotklinikk AS | Health & social care | 2025 |
| Vestfold Glava Innblåsing Ans | Construction | 1994 |
| Vestfold Næringseiendom AS | Real estate | 2019 |
| Vestfold Peis & Varme AS | Wholesale & retail | 2024 |
| Vestfold Varme AS | Wholesale & retail | 2009 |
| Vestfolds Rivieraen AS | | 2019 |
| Vestviken Utvikling AS | Real estate | 2003 |
| VFK Holding AS | | 2022 |
| Via Færder AS | Health & social care | 1990 |
| Vibwa AS | | 2022 |
| Vigili AS | | 2023 |
| Viker Eiendomsutvikling AS | Real estate | 2010 |
| Villmarkslaft AS | Construction | 2026 |
| VINNDAL HANDEL Olsen & Nilsen ANS | | 1988 |
| Vipada Renhold AS | Administrative & support | 2003 |
| Vipada-Renhold AS | Administrative & support | 2024 |
| Vivos Byggkonsult AS | Professional & scientific | 2022 |
| Vjuutech AS | Wholesale & retail | 2020 |
| Vki AS | Real estate | 2016 |
| Vogt Eiendom AS | Real estate | 2022 |
| Vol De Nuit AS | Wholesale & retail | 2025 |
| Volvare AS | | 2021 |
| Vonka AS | Professional & scientific | 2023 |
| VP Gonvikbakken 21 AS | Real estate | 2025 |
| VVS Vestfold Rørservice AS | Construction | 2007 |
| Westron Ramsum AS | Real estate | 2001 |
| Wiggo Spange AS | Real estate | 2005 |
| Wilcon Eiendom AS | Real estate | 2017 |
| Wåg Holding AS | Financial services | 2011 |
| Yantoi AS | | 2025 |
| Yoga Vital Studio AS | Wholesale & retail | 2014 |
| Yolly 80 AS | | 2023 |
| Yourtale AS | Information & communication | 2025 |
| ZBH Eiendom AS | Real estate | 2019 |
| Zeiner Bolig Håndverk AS | Construction | 1988 |
| Zerogravity AS | Wholesale & retail | 2025 |
| Åpent Hav AS | Real estate | 2018 |
| Åsgaardeiendom AS | | 2015 |
| Økt Holding AS | | 2020 |
| Øs 8 Invest AS | | 2026 |
| Østborg Berntsen Holding AS | Construction | 2013 |
| Østre Holding AS | Real estate | 2011 |
| Øya Sport Og Helse AS | Education | 2015 |
| Øyas AS | Professional & scientific | 2024 |
| Øyelege Online AS | Professional & scientific | 2022 |