| Trosterud Mekaniske Verksted AS | Manufacturing | 1983 |
| Trygg Bilservice AS | Other services | 2024 |
| Trygger AS | Construction | 2024 |
| Tsi Norway Ltd | Professional & scientific | 2017 |
| Tt-Gruppen AS | Wholesale & retail | 2021 |
| Tyretrust Norge AS | Wholesale & retail | 2022 |
| Tysnes & Holding AS | | 2025 |
| Tømtåsen Holding AS | Real estate | 2005 |
| Tønnum Drift Da | Agriculture & fishing | 2022 |
| Uaw Holding AS | Health & social care | 2021 |
| Ulin AS | Real estate | 2005 |
| Ultrafragola AS | Real estate | 2020 |
| Upa AS | Real estate | 2006 |
| UX7AS AS | Information & communication | 2024 |
| Vakkert Smil AS | Health & social care | 2012 |
| Value Vestby AS | Professional & scientific | 1975 |
| Varde-Vindu AS | Wholesale & retail | 2024 |
| Vasketjenester AS | Administrative & support | 2021 |
| Ve Gruppen AS | Real estate | 2022 |
| Veimiljø Da | Agriculture & fishing | 2019 |
| Verdens Fineste Hytte AS | Real estate | 2022 |
| Verket Havn AS | Real estate | 2017 |
| Verpetveien 17 AS | Real estate | 2018 |
| Verpetveien 23 AS | Real estate | 1994 |
| Verpetveien 29 AS | Real estate | 2022 |
| Verpetveien 31 AS | Real estate | 2022 |
| Verpetveien 32 AS | Real estate | 2020 |
| Verpetveien 34 AS | Real estate | 2021 |
| Verpetveien 6 AS | Real estate | 2007 |
| Vestby Auto AS | Other services | 2021 |
| Vestby Avis AS | Information & communication | 2006 |
| Vestby Bad AS | Construction | 2024 |
| Vestby Bakeri AS | Manufacturing | 2023 |
| Vestby Barbershop AS | Other services | 2023 |
| Vestby Bil AS | Wholesale & retail | 2025 |
| Vestby Bilsenter AS | Wholesale & retail | 2025 |
| Vestby Bilservice AS | Administrative & support | 2022 |
| Vestby Bilutleie AS | Administrative & support | 2026 |
| Vestby Dagligvarer AS | Wholesale & retail | 2025 |
| Vestby Dyreklinikk AS | Professional & scientific | 2009 |
| Vestby Eiendom AS | Real estate | 2006 |
| Vestby Eiendomsselskapet AS | | 2013 |
| Vestby Events AS | Professional & scientific | 2024 |
| Vestby Forsikring Da | Financial services | 2010 |
| Vestby Fysikalske Institutt AS | Health & social care | 1979 |
| Vestby Grafiske AS | Manufacturing | 1995 |
| Vestby Graveservice AS | Construction | 2017 |
| Vestby Klokker Og Smykker AS | Wholesale & retail | 2026 |
| Vestby Kolonial AS | Wholesale & retail | 2025 |
| Vestby Lagerservice AS | Real estate | 1968 |
| Vestby Minilager AS | Real estate | 2026 |
| Vestby Mølle Og Kornsilo AS | Manufacturing | 1953 |
| Vestby Næringspark Joh AS | Real estate | 2014 |
| Vestby Og Son Trafikkskole AS | Education | 2014 |
| Vestby Optiske AS | Wholesale & retail | 2018 |
| Vestby Park AS | Hospitality | 2022 |
| Vestby Reklame AS | Professional & scientific | 2018 |
| Vestby Rørleggerservice AS | Construction | 2013 |
| Vestby Storbilvask AS | Other services | 2012 |
| Vestby Tannlegesenter AS | Health & social care | 2019 |
| Vestby Tannregulering AS | Health & social care | 2018 |
| Vestby Treningssenter AS | Arts & recreation | 2014 |
| Vestbysenteret Eiendom AS | Real estate | 2016 |
| Vestbytorget Legesenter AS | Health & social care | 2016 |
| Vestheimveien 31 AS | Real estate | 2011 |
| Vestheimveien 33 AS | Real estate | 1990 |
| Vestre Kjenn Kloakklag SA | Water & waste | 2013 |
| VH Prosjekt AS | Construction | 2017 |
| Via Outlets Oslo AS | Real estate | 2017 |
| Via Outlets Vestby Manco AS | Professional & scientific | 2018 |
| Vidar Johnsen AS | Health & social care | 1989 |
| Viken Lagerseksjoner AS | Real estate | 2023 |
| Viken Lagerseksjoner Moss Og Våler Næringspark AS | Real estate | 2023 |
| Viken Tankrens AS | Administrative & support | 2019 |
| Viking El AS | Construction | 2024 |
| Viking Led AS | Wholesale & retail | 2016 |
| Villa Bakeriene Vestby AS | Hospitality | 2014 |
| Vinovinvinho AS | Wholesale & retail | 2005 |
| Vinterbro Rørleggerservice AS | Construction | 2020 |
| Vintergarasjen AS | Real estate | 2022 |
| Visteeca Partners AS | Professional & scientific | 2021 |
| Våtromstjenester AS | Real estate | 2024 |
| W.A. Holding AS | Wholesale & retail | 2021 |
| Wampee Ans | Wholesale & retail | 1988 |
| WBH Norge AS | Information & communication | 2025 |
| Wear Solutions AS | Manufacturing | 2022 |
| Wessel Boligutleie AS | Real estate | 2021 |
| Wessel Eiendom AS | Real estate | 2005 |
| Westby Karosseri AS | Real estate | 2000 |
| Wii AS | | 2020 |
| WK Holding AS | Other services | 2005 |
| WKM Eiendom AS | Real estate | 2015 |
| WL Event AS | Arts & recreation | 2016 |
| Wojtek Bygg Renovering AS | Construction | 2011 |
| Woodsconsult Shipping AS | Transport & logistics | 2025 |
| Xa Xa Outlet AS | Hospitality | 2023 |
| Yacht Partner AS | Administrative & support | 2007 |
| Yaren AS | Wholesale & retail | 2026 |
| Yearbase AS | Information & communication | 2018 |
| Yh Holding AS | Construction | 2019 |