| Tomy AS | Real estate | 2018 |
| Toolbar AS | Information & communication | 2026 |
| Toppoint AS | Administrative & support | 2023 |
| Tor Arne Thomassen AS | Construction | 2014 |
| Tor Even Opgård AS | Construction | 2022 |
| Torbjørn Hay Bygg AS | Construction | 2019 |
| Tore Wæraas Holding AS | Real estate | 2000 |
| Torleif Johansen Holding AS | Construction | 2005 |
| Tormod Kristensen Maskin AS | Construction | 2004 |
| Tors Bud AS | Transport & logistics | 2004 |
| Torsi AS | | 2026 |
| Torød Boliger AS | Real estate | 2025 |
| Total Mekk AS | Manufacturing | 2022 |
| Totalmassasje AS | Health & social care | 2026 |
| Totalservice Alta AS | Construction | 2017 |
| Transfarelv AS | | 2020 |
| Transportfinesse AS | Transport & logistics | 2025 |
| Transportkompetanse Nord AS | Transport & logistics | 2021 |
| Trasti & Trine AS | Hospitality | 2011 |
| Trebakk AS | Wholesale & retail | 2023 |
| Trekanten Alta AS | Real estate | 2011 |
| TRH Eiendom AS | Real estate | 2012 |
| Trine Lise Holding AS | Other services | 2010 |
| Trio Trafikkskole Alta AS | Education | 2013 |
| Trio Trafikkskole Roar Hætta AS | Education | 2013 |
| Trio Utleie AS | Administrative & support | 2021 |
| Trivelig Selskap AS | Professional & scientific | 2018 |
| Tro Regnskap AS | Professional & scientific | 2026 |
| Tron Holding AS | | 2021 |
| Trond Egil AS | Agriculture & fishing | 1994 |
| Trond Frank Og Tom Frakt AS | Transport & logistics | 1992 |
| True North Experience AS | Arts & recreation | 2021 |
| Truja AS | Manufacturing | 2021 |
| TS Bad Og Rør AS | Construction | 2025 |
| TS Isaksen AS | Real estate | 2016 |
| TS3D AS | Wholesale & retail | 2022 |
| Tsi Norway AS | Wholesale & retail | 2011 |
| TST Låsservice AS | Construction | 2025 |
| Tsunami Alta AS | Hospitality | 2026 |
| TTS Nord AS | Real estate | 2011 |
| Tueng Holding AS | Financial services | 2015 |
| Tundra Utbygging AS | Real estate | 2007 |
| Tuvholmen AS | Administrative & support | 2024 |
| Tømrer Andreassen AS | Construction | 2020 |
| Tømrer Eivind Johansen AS | Construction | 2007 |
| Tømrer Erlend Lillemoen AS | Construction | 2004 |
| Tømrer Gøran Romsdal AS | Construction | 2001 |
| Tømrer Jea AS | Construction | 2016 |
| Tømrer Magnus Lekang AS | Construction | 2024 |
| Tømrer Martin Bjerring AS | Construction | 2021 |
| Tømrer NM AS | Construction | 2018 |
| Tømrer Stian Romsdal AS | Construction | 2025 |
| Tømrermester Jo G Strand AS | Construction | 1997 |
| Tømrermester Karstein Pedersen AS | Construction | 1997 |
| Tømrermester Tom Sandvik AS | Financial services | 2000 |
| Uglebakken Helse AS | Health & social care | 2014 |
| Uglebo Nord AS | Real estate | 2015 |
| Ui.Arnesen AS | | 2020 |
| Ultra Rent AS | Administrative & support | 2006 |
| Unicare Nord-Norge AS | Health & social care | 1999 |
| Unik Økonomi AS | Professional & scientific | 2021 |
| Unlimited AS | Information & communication | 2012 |
| Uno Cafe AS | Hospitality | 2023 |
| Uno Catering Og Delikatesse AS | Hospitality | 2018 |
| USA Holding AS | | 2019 |
| Uti Holding AS | | 2025 |
| Utleier AS | Information & communication | 2024 |
| Utlys AS | Information & communication | 2024 |
| Utover AS | Wholesale & retail | 2023 |
| Uvær AS | Professional & scientific | 2024 |
| V. Wilhelmsen Holding AS | | 2023 |
| V.Wilhelmsen Holding AS | | 2025 |
| Vaag Nor AS | Wholesale & retail | 2000 |
| Vaktmestertjenester Alta AS | Administrative & support | 2019 |
| Valentin AS | Other services | 2023 |
| Vannveien 3 AS | Real estate | 2013 |
| Vanvittig Grill AS | Hospitality | 2020 |
| Vavut Tech AS | Information & communication | 2017 |
| Vebjørn Olsen Holding AS | | 2023 |
| Vebjørn Pedersen Invest AS | | 2021 |
| Vefas Retur AS | Water & waste | 2006 |
| Vegard Stene AS | | 2016 |
| Veiteknikk Alta AS | Construction | 2023 |
| Velito AS | | 2005 |
| Vepsveien 8 AS | Real estate | 2019 |
| Verdde Visti AS | Administrative & support | 2023 |
| Vernesenteret AS | Wholesale & retail | 2023 |
| Vero Holding AS | Construction | 2019 |
| Verte Holding AS | Professional & scientific | 2021 |
| Verte Landskap & Arkitektur AS | Professional & scientific | 1987 |
| Vest-Finnmark Bil AS | Wholesale & retail | 2017 |
| Vest-Finnmark Tverrfaglige Opplæringskontor AS | Education | 2025 |
| Veta Fangst AS | Agriculture & fishing | 2022 |
| Veta Holding AS | Agriculture & fishing | 2022 |
| Veterinær Ane Holstad AS | Professional & scientific | 2019 |
| Veterinær Elvenes AS | Professional & scientific | 2017 |
| Veterinær Katrine Omvik AS | Professional & scientific | 2023 |
| Veterinær Lein AS | Professional & scientific | 2024 |
| Veterinær Lena Iversen AS | Professional & scientific | 2013 |
| Veterinær Romfo AS | Professional & scientific | 2017 |