| Tannlege Kai Uwe Gitter AS | Health & social care | 2012 |
| Tannlege Stokke AS | Health & social care | 1998 |
| TB Import AS | Wholesale & retail | 2024 |
| Tbo Energy Holding AS | Construction | 2022 |
| Teamed Holding AS | | 2026 |
| Telemarksrøra AS | Manufacturing | 2017 |
| Teltkongen AS | Wholesale & retail | 2020 |
| Temptech AS | Wholesale & retail | 2004 |
| Terje Bråten Invest AS | Construction | 2016 |
| Termobolig AS | Construction | 2022 |
| Tes Vedlikehold AS | Construction | 2020 |
| Th-Bergan AS | Transport & logistics | 2015 |
| Thagba AS | Real estate | 2020 |
| Thorød Betongarbeider AS | Construction | 2011 |
| Tid for Vekst AS | Professional & scientific | 2006 |
| Tintin Solutions AS | Administrative & support | 2017 |
| Tintline Autocenter AS | Other services | 2015 |
| TK Secure AS | Construction | 2010 |
| TL Transport & Driftstjenester AS | Transport & logistics | 2025 |
| TLC Elektro AS | Education | 2024 |
| Tolago AS | Wholesale & retail | 2023 |
| Tonkotsu Holding AS | Information & communication | 2021 |
| Toppen Industripark 7 AS | Real estate | 2015 |
| Tore Ask & Sønn Eiendom AS | Construction | 2009 |
| Tore Bjørnstad AS | Professional & scientific | 2016 |
| Torpinvest AS | Agriculture & fishing | 2020 |
| Toso Norge AS | Wholesale & retail | 2021 |
| Total Prosjektstyring AS | Professional & scientific | 2010 |
| Total Service Consulting AS | Construction | 2025 |
| Totaltrans AS | Transport & logistics | 2018 |
| Tottelie 35 AS | Real estate | 2021 |
| Trailerconsult AS | Wholesale & retail | 2013 |
| Trailerpartner AS | Wholesale & retail | 2013 |
| Tre Liv Eiendom AS | Real estate | 2025 |
| Trond Sundby AS | Wholesale & retail | 2024 |
| Truck Wash System AS | Other services | 2016 |
| Trygg Montasje AS | Professional & scientific | 1999 |
| Træleborgveien 3 AS | Real estate | 1990 |
| Tønsberg Båt AS | Wholesale & retail | 2013 |
| Uffe Holding AS | | 2021 |
| Ulvet Holding AS | | 2021 |
| Vaffelberg AS | Hospitality | 2024 |
| Vaktmester.No AS | Administrative & support | 2016 |
| Valent AS | Wholesale & retail | 2026 |
| Valt AS | Agriculture & fishing | 2020 |
| Vancowill Industrial Solutions AS | Education | 2014 |
| Varme- Og Kjølesystemer AS | Construction | 2009 |
| Vaxtar AS | Manufacturing | 2007 |
| Vaycay AS | Wholesale & retail | 2017 |
| Vearveien 2 AS | Real estate | 2022 |
| Ved Eiendom AS | Real estate | 1983 |
| Vedia AS | Construction | 2025 |
| Vedia Maskinutleie AS | Administrative & support | 2026 |
| Vedvik Byggteknikk AS | Professional & scientific | 2021 |
| Vegard Harm AS | Arts & recreation | 2019 |
| Vekll TT AS | Transport & logistics | 2024 |
| Velle Olaløkka Barnehage AS | Education | 2022 |
| Velron AS | Wholesale & retail | 2024 |
| Venge & Kejser Holding AS | Construction | 2020 |
| Venge Og Kejser Bygg AS | Construction | 2020 |
| Verdihandel AS | Wholesale & retail | 2018 |
| Vestfjord AS | Real estate | 2007 |
| Vestfold Assistanse AS | Other services | 2007 |
| Vestfold Betong AS | Manufacturing | 2014 |
| Vestfold Blomst AS | Wholesale & retail | 1986 |
| Vestfold Elektro-Diesel AS | Other services | 2007 |
| Vestfold Energirådgiving AS | Professional & scientific | 2024 |
| Vestfold Forsikringssenter AS | Financial services | 2001 |
| Vestfold Imports AS | Wholesale & retail | 2026 |
| Vestfold Lagerbodutleie AS | Real estate | 2016 |
| Vestfold Landbrukstjenester SA | Agriculture & fishing | 1990 |
| Vestfold Maskin AS | Wholesale & retail | 2002 |
| Vestfold Maskintransport AS | Transport & logistics | 2023 |
| Vestfold Production AS | Wholesale & retail | 2019 |
| Vestfold Tak & Montasje AS | Construction | 2011 |
| Vestfold Trafo Energi AS | Manufacturing | 1996 |
| Vestfold Transportsentral AS | Transport & logistics | 2020 |
| Vestfold Varmepumpeservice AS | Construction | 2014 |
| Vestfoldveterinærene AS | Professional & scientific | 2024 |
| Vida Logistics AS | Transport & logistics | 2025 |
| Vika Montasje AS | Manufacturing | 2024 |
| Vika Montering AS | Manufacturing | 1998 |
| Vika Snekkerverksted AS | Manufacturing | 2014 |
| Viking Lyd & Lys AS | Arts & recreation | 2025 |
| Vilja AS | Financial services | 2005 |
| Villa Marco AS | Hospitality | 2012 |
| Villa Marco Nuf | Hospitality | 2011 |
| Vinterfall Eiendom 2 AS | Real estate | 2020 |
| Vinterfall Invest AS | Real estate | 2020 |
| Vinterfall Næring AS | Real estate | 2025 |
| Visio AS | | 2013 |
| Vitapluss AS | Wholesale & retail | 2021 |
| Volmax AS | Other services | 2002 |
| Vårdal VVS AS | Construction | 2018 |
| Washpoint AS | Administrative & support | 2022 |
| Watch-It AS | Manufacturing | 2016 |
| Winbergdesign AS | Manufacturing | 2023 |
| Wirgenes-Holding AS | | 2024 |
| Wirgenesvei 3 AS | Real estate | 2022 |
| Xervon GmbH | Professional & scientific | 2014 |