| Trallfaveien 7 AS | Real estate | 2006 |
| Translink Corporate Finance Norge AS | Professional & scientific | 2009 |
| Travelling Suitcase Ans | Administrative & support | 2024 |
| Trbra 475 Holding AS | | 2023 |
| Treasure AS | Real estate | 2016 |
| Tress Invest AS | Real estate | 1992 |
| TRG Energy AS | Administrative & support | 2018 |
| TRG Holding AS | Information & communication | 2000 |
| TRG Real Estate AS | Real estate | 2021 |
| Triple H Invest AS | Financial services | 2016 |
| Tronnes AS | Administrative & support | 2014 |
| Trulli Wines AS | Wholesale & retail | 2005 |
| TRX Electronic Norway AS | Wholesale & retail | 2011 |
| Trysil Høyfjellsgrend I AS | Real estate | 2006 |
| Tschudi Bio Company AS | Manufacturing | 2012 |
| Tschudi Energy AS | Professional & scientific | 2019 |
| Tschudi Financial Services AS | Professional & scientific | 2020 |
| Tschudi Invest AS | | 1987 |
| Tschudi Logistics Holding AS | Transport & logistics | 2006 |
| Tschudi Ship Management AS | Professional & scientific | 2016 |
| Tschudi Shipping Company AS | Transport & logistics | 1992 |
| TT Nordic AS | | 2006 |
| Tufte Wear AS | Wholesale & retail | 2012 |
| Tuftene 2 AS | Real estate | 2023 |
| Tullinsgate 6 AS | Real estate | 2018 |
| Twinintel AS | Information & communication | 2016 |
| Tyresö Invest AS | Real estate | 2017 |
| Tøcksfors Tomteselskap AS | | 2006 |
| Tørvis Drift AS | Hospitality | 2020 |
| Ub Networks Norway Inc | | 1998 |
| Ube Gruppen AS | Manufacturing | 2007 |
| Umoe AS | Manufacturing | 1991 |
| Umoe Cautus AS | Administrative & support | 2017 |
| Umoe Eiendom Vest AS | Real estate | 1924 |
| Umoe Gruppen AS | Manufacturing | 1984 |
| Umoe Vectura AS | Administrative & support | 2017 |
| Umoe Wind II AS | Administrative & support | 2015 |
| Uncap AS | Professional & scientific | 2024 |
| Understory AS | Manufacturing | 2023 |
| Unico Real Wines AS | Wholesale & retail | 2012 |
| Unicus AS | Information & communication | 2018 |
| Unicus Holding AS | Information & communication | 2018 |
| Unilabs Laboratoriemedisin AS | Health & social care | 1984 |
| Unilabs Norge AS | Health & social care | 1999 |
| Unique Food AS | Wholesale & retail | 2003 |
| United Brands AS | Wholesale & retail | 2012 |
| Urban Beverages AS | Wholesale & retail | 2006 |
| Utleiemegleren Asker Og Bærum AS | Real estate | 2008 |
| Uto AS | Professional & scientific | 2007 |
| Utsikten-Gamlegrendåsen Nord AS | Real estate | 2013 |
| Utsikten-Gamlegrendåsen Nord KS | Real estate | 2013 |
| Varioedge Norge AS | Wholesale & retail | 2015 |
| Varme Energy AS | Professional & scientific | 2022 |
| Vatconsultant No AS | Financial services | 2002 |
| Vaxa Drift AS | Real estate | 2018 |
| Vaxa Group AS | Real estate | 2015 |
| Vaxa Property AS | Real estate | 2014 |
| Vaxa Økonomi AS | Professional & scientific | 2018 |
| Vcom AS | Wholesale & retail | 1929 |
| Vector Group Scandinavia AS | Real estate | 2020 |
| Vedeld AS | Professional & scientific | 2013 |
| Vedeld Technology | Professional & scientific | 2017 |
| Velo City AS | Wholesale & retail | 2014 |
| Vema III AS | Arts & recreation | 2016 |
| Venga AS | | 2021 |
| Venga Holding AS | Arts & recreation | 2021 |
| Venga Norway AS | Information & communication | 2021 |
| Venture Step AS | Real estate | 1999 |
| Venus AS | Transport & logistics | 1989 |
| Verizon Norway AS | Information & communication | 1998 |
| Verpetveien 30 AS | Real estate | 2020 |
| Verpetveien 50 AS | Real estate | 1994 |
| Verpetveien 56 AS | Real estate | 2018 |
| Verrocchio AS | Administrative & support | 2013 |
| Vestmarka Kapital AS | | 2026 |
| Vestsida Hageby AS | Real estate | 2003 |
| Viad Norway AS | Mining & quarrying | 2019 |
| Vibrand Kapitalforvaltning AS | Financial services | 1987 |
| Vienna Insurance Group AG Wiener Versicherung Gruppe Nuf | Financial services | 2019 |
| Vier Lagåsen Barnehage SA | Education | 2002 |
| Vigen Invest AS | Information & communication | 2021 |
| Vika Senterdrift AS | Real estate | 2006 |
| Viken Miljøpark AS | Mining & quarrying | 2020 |
| Viken Transport. AS | Transport & logistics | 2022 |
| Villa Lysaker AS | Real estate | 2012 |
| Vin John AS | Wholesale & retail | 2014 |
| Vinarius AS | Wholesale & retail | 1997 |
| Vinatia AS | Wholesale & retail | 2016 |
| Vinetum AS | Wholesale & retail | 2000 |
| Vinetum Group AS | Wholesale & retail | 1985 |
| Vinkilden AS | Wholesale & retail | 2002 |
| Vino Porto AS | Wholesale & retail | 2011 |
| Vinterbro Invest AS | Real estate | 2021 |
| Vinum AS | Wholesale & retail | 2001 |
| Vinus AS | Wholesale & retail | 2016 |
| Viom Holding AS | | 2023 |
| Virago Holding AS | Information & communication | 2023 |
| Virbon Invest AS | Real estate | 2006 |
| Virke Forsikring AS | Professional & scientific | 2006 |
| Vision Healthcare Nordic AS | Wholesale & retail | 1997 |