| TJ Design AS | Professional & scientific | 2023 |
| Tjernsløkka Bolig AS | Real estate | 2022 |
| Tjernsløkka Næring AS | Real estate | 2022 |
| TNB Kongsberg AS | Wholesale & retail | 2015 |
| Togronnekarer AS | Manufacturing | 2018 |
| Tommelise Eiendom AS | Real estate | 2003 |
| Top Notch Fitness AS | Arts & recreation | 2017 |
| Top Notch Real Estate AS | Real estate | 2023 |
| Topcon Norway Medical | Professional & scientific | 2025 |
| Toppen Eiendom Newco AS | Real estate | 2021 |
| Toppen Industripark 10 AS | Real estate | 2015 |
| Toppen Industripark 12 AS | Real estate | 2020 |
| Toppen Industripark 16 AS | Real estate | 2020 |
| Toppen Industripark 17 AS | Real estate | 2020 |
| Toppen Industripark 4 AS | Real estate | 2015 |
| Toppen Industripark 6 AS | Real estate | 2015 |
| Toppen Industripark 9 AS | Real estate | 2015 |
| Toppen Industripark AS | Construction | 2015 |
| Toppen Næringspark AS | Real estate | 2019 |
| Toppen Prosjekt AS | Professional & scientific | 2019 |
| Topren AS | Administrative & support | 2025 |
| Tor Egil Invest AS | Real estate | 2017 |
| Tor Espen Røise Kristiansen AS | Financial services | 2005 |
| Tore Baklid AS | Wholesale & retail | 2008 |
| Tore Engan AS | Construction | 2020 |
| Tore Wilhelm Kristiansen AS | Financial services | 2005 |
| Tore.Halvorsen AS | Mining & quarrying | 2018 |
| Torils Dagligvare Ans | Wholesale & retail | 1991 |
| Torkjel Haugen Holding AS | | 2026 |
| Trenger Penger AS | Real estate | 2026 |
| Trevit AS | Wholesale & retail | 2021 |
| Tricolor Holding AS | | 2025 |
| Trollpopp AS | | 2018 |
| Trollungan AS | Wholesale & retail | 1995 |
| Trosthoel AS | Administrative & support | 2019 |
| Trygg Autohandel AS | Wholesale & retail | 2025 |
| Trygg Rør Og Totalbad AS | Construction | 2022 |
| Trygve Løvås AS | Administrative & support | 2003 |
| Tråkka Mat & Vinhus AS | Hospitality | 2020 |
| Trønderguten AS | | 2005 |
| TT Capital AS | | 2021 |
| Tufteveien 60 AS | Real estate | 2022 |
| TURBO1 AS | Wholesale & retail | 1992 |
| Turbobuss AS | Administrative & support | 2026 |
| Turbopower AS | Wholesale & retail | 2008 |
| Tveita AS | Real estate | 2016 |
| Tveiten Invest AS | Real estate | 1974 |
| Tveiten-Holding AS | Real estate | 2020 |
| Tyin Reklame Ans | Professional & scientific | 2010 |
| Tømmermester Ola Skjøtskift AS | Construction | 2006 |
| Tømrer Henrik Bekkevar AS | Construction | 2026 |
| Tømrer Øyvind Magnussen AS | Construction | 2019 |
| Tømrermester Dag Sandvik AS | Construction | 2013 |
| Tønna Holding AS | | 2017 |
| Ugla AS | | 2024 |
| Ulland Stjernløw Holding AS | | 2026 |
| Uniserv Ans | Professional & scientific | 1992 |
| Uniserv AS | Professional & scientific | 2006 |
| Unispectro AS | Professional & scientific | 2016 |
| Upforit AS | Information & communication | 2023 |
| Upkip AS | Information & communication | 2017 |
| Ustaoset 225 AS | Real estate | 2020 |
| Vaadal AS | | 2022 |
| Vaadal Transport AS | Transport & logistics | 2005 |
| Vaans AS | | 2021 |
| Vacon AS | Professional & scientific | 2020 |
| Vadder Invest AS | Financial services | 2013 |
| Vaimar Bygg AS | Construction | 2023 |
| Vaimar Holding AS | Real estate | 2025 |
| Val Investment | | 2022 |
| Val Nuf | Professional & scientific | 2022 |
| Valens Holding AS | | 2021 |
| Valentina Style AS | Other services | 2026 |
| Valia Investment Group AS | Financial services | 2006 |
| Valoin Advisory AS | Professional & scientific | 2025 |
| Vanberg Holding AS | Real estate | 2005 |
| Vanberg-Gården AS | Real estate | 1979 |
| Vang Eiendomsselskap AS | Real estate | 2009 |
| Vannskjæresenteret AS | Manufacturing | 1992 |
| Varg & Storm Holding AS | Construction | 2023 |
| Varlo Eiendom AS | Real estate | 1999 |
| Varme & Flis AS | Wholesale & retail | 2008 |
| Varvia AS | Professional & scientific | 2008 |
| VDV AS | Real estate | 2026 |
| Vdveen AS | Real estate | 2026 |
| Vdveen Eiendom AS | Real estate | 2022 |
| Vdveen Utvikling AS | Real estate | 2022 |
| Vegard Hauge Holding AS | Professional & scientific | 2021 |
| Vegard Spiten AS | | 2017 |
| Veglaget Sambandsvegen Dalane SA | Real estate | 1965 |
| Veifri AS | Wholesale & retail | 2026 |
| Vekter Og Alarmservice AS | Administrative & support | 2005 |
| Vektor Eiendom AS | Real estate | 2019 |
| Venro Holding AS | | 2026 |
| Vestsiden Catering Og Restaurant AS | Hospitality | 2021 |
| Vestsiden Farvehandel AS | Wholesale & retail | 2000 |
| Vestsiden Selskapsmat AS | Hospitality | 2017 |
| Vestsiden Tannlegekontor AS | Health & social care | 2013 |
| Viatech AS | Manufacturing | 2005 |
| Vig AS | Wholesale & retail | 2016 |