| Traasdahl Holding AS | Health & social care | 2005 |
| Trabecula AS | | 2026 |
| Tracing Argonauts AS | Professional & scientific | 2021 |
| Trading Invest AS | Real estate | 1996 |
| Trafikkskole Nord AS | Education | 2025 |
| Trana Invest AS | | 2016 |
| Transportsentralen Bodø AS | Transport & logistics | 2016 |
| Tranøy Eiendom AS | Real estate | 2014 |
| Tranøyveien 6 AS | Construction | 2015 |
| Trejak Da | Real estate | 2006 |
| Tricego Da | Wholesale & retail | 2020 |
| Trifektum AS | Professional & scientific | 2022 |
| Trimpoeng AS | Information & communication | 2019 |
| Trine Berge AS | Arts & recreation | 2013 |
| Triple Trading AS | Wholesale & retail | 2024 |
| Tripshare AS | Information & communication | 2026 |
| Trix Holding AS | Arts & recreation | 2021 |
| Trodico AS | Real estate | 2007 |
| Troja Invest AS | Financial services | 2005 |
| Trojan Norway AS | Manufacturing | 2015 |
| Troll International Ans | Wholesale & retail | 1994 |
| Troll Systems AS | Manufacturing | 2015 |
| Trollmyra Barnehage AS | Education | 1998 |
| Trollåsveien Invest AS | Professional & scientific | 2020 |
| Tromsø Eiendomsinvest AS | Professional & scientific | 2018 |
| Trond Berg Holding AS | | 2020 |
| Trondsen Maskin & Sveiseteknikk AS | Manufacturing | 2012 |
| Trones Fysioterapi AS | Health & social care | 2021 |
| Trophy & Mac AS | Professional & scientific | 2014 |
| True Nerd AS | Information & communication | 2026 |
| Trygg I Nord AS | Professional & scientific | 2026 |
| Trygg I Tjenesten Da | Education | 2025 |
| Trygge Barn 2.0 AS | Education | 2019 |
| Trålveien 50 AS | Real estate | 2014 |
| Trålveien 56 AS | Real estate | 2001 |
| Trålveien 6 Bodø AS | Real estate | 2021 |
| Trålveien Utvikling AS | Real estate | 2018 |
| TS Butikkdrift AS | Wholesale & retail | 2024 |
| Tsbb AS | Hospitality | 2023 |
| Tsi Holding AS | Real estate | 2005 |
| Tsla AS | Manufacturing | 2018 |
| TT Maritim AS | Wholesale & retail | 2018 |
| Turner AS | Real estate | 1999 |
| Tusenhjemmet Bodø AS | Health & social care | 2012 |
| Tuv Trelast Eiendom AS | Real estate | 2025 |
| Tvenning Invest AS | Health & social care | 1999 |
| Tveraabak Legebehandling AS | Health & social care | 2009 |
| Tverlandet Eiendom AS | Real estate | 1999 |
| Tverlandet Næringsutvikling AS | Real estate | 2010 |
| Tverlandssentret AS | Real estate | 2018 |
| TWH Holding AS | | 2025 |
| Twin Kinetic Turbiner AS | Real estate | 2024 |
| Tx-Invest AS | Professional & scientific | 2020 |
| Typ Agency AS | Professional & scientific | 2024 |
| TYTON365 AS | Information & communication | 2026 |
| Tårnstein Invest AS | | 2024 |
| Tårnvik Hyttefelt SA | Real estate | 2011 |
| Tøffe Invest AS | | 2012 |
| Tømmerberg Musikk AS | Arts & recreation | 2024 |
| Tømmerås Investments AS | | 2023 |
| Tømrer Thomas Finstad AS | Construction | 2015 |
| Tørrberget AS | Real estate | 2006 |
| U2 Arkitekter AS | Professional & scientific | 2007 |
| Uhm Invest AS | Professional & scientific | 2005 |
| Under Produksjon AS | Arts & recreation | 2025 |
| Ungava AS | Information & communication | 2018 |
| Uni Fix AS | Administrative & support | 2017 |
| Unik, Kosmetisk Medisin AS | Health & social care | 2014 |
| Uninor Eiendom AS | Real estate | 2017 |
| Uniton AS | Real estate | 2001 |
| Uno Consept AS | Construction | 2018 |
| Uno Design & Arkitektur AS | Professional & scientific | 2018 |
| Unodesigns AS | Professional & scientific | 2007 |
| Uranus Eiendom AS | Real estate | 2024 |
| Uro-Onco Care AS | Health & social care | 2025 |
| Urving AS | Health & social care | 1997 |
| Utsi Rør AS | Construction | 2024 |
| Utv Thomas AS | Transport & logistics | 2024 |
| Utviklingsprosjekt AS | Real estate | 2009 |
| V Design AS | Professional & scientific | 2005 |
| V&P Invest AS | Health & social care | 2018 |
| Vading Holding AS | Real estate | 1997 |
| Vaksineklinikken AS | Health & social care | 2013 |
| Valen Lystbåthavn Ba | Arts & recreation | 1990 |
| Valle Software Labs AS | Information & communication | 2024 |
| Valmont AS | Professional & scientific | 2026 |
| Valnesfjord Hus AS | Real estate | 2024 |
| Vanderloock Media AS | Arts & recreation | 2025 |
| Vanlør Mølinett AS | Other services | 2025 |
| Varghaugen Holding AS | Manufacturing | 2023 |
| Varghaugen Motor AS | Manufacturing | 2022 |
| Varghaugen Utleie AS | Administrative & support | 2025 |
| Vargheim AS | Professional & scientific | 2025 |
| Vartdal Plast Bodø AS | Manufacturing | 1988 |
| Vatnet Grunneierlag SA | Real estate | 1998 |
| VD Eiendom Bodø AS | Real estate | 2004 |
| Vefsnvegen 3-5 Eiendom AS | Real estate | 2007 |
| Veinor AS | Construction | 2018 |
| Velbehag Storgata 36 AS | Other services | 2023 |
| Veq Invest AS | | 2023 |