| Twma Finance AS | | 2023 |
| Twma Norge AS | Mining & quarrying | 2007 |
| Two Floors AS | Hospitality | 2025 |
| Tx:Translation AS | Professional & scientific | 2005 |
| Tyler Energy Consulting AS | Professional & scientific | 2022 |
| Tynn Grus AS | Real estate | 2000 |
| Tyrving AS | Professional & scientific | 2005 |
| Tytek AS | Real estate | 2020 |
| Tytek Invest AS | Real estate | 2021 |
| Th. Thormodsen jr. A/S | Wholesale & retail | 1977 |
| Turbo Ped DA | Information & communication | 1988 |
| Tåke AS | Administrative & support | 2024 |
| Tårnet Take Away Da | Hospitality | 1996 |
| Tårngalleriet AS | Real estate | 2015 |
| Tææn Invest AS | | 2019 |
| Tønnessen AS | Financial services | 2012 |
| Tørst Stavanger AS | Hospitality | 2015 |
| U-I-R Elektriker AS | Construction | 2024 |
| U9KT AS | Administrative & support | 2022 |
| Uab Norvegijos Kontaktai | Administrative & support | 2006 |
| Uanz Bygg AS | Construction | 2008 |
| Uis Studentkapital AS | Other services | 2015 |
| Uldal Eiendom AS | Real estate | 2008 |
| Ull AS | Real estate | 2007 |
| Ull Capital AS | Financial services | 2007 |
| Ullandhaug Energi AS | Energy | 2007 |
| Ullandhaug Samdrift Da | Agriculture & fishing | 1998 |
| Ullball Holding AS | | 2017 |
| Ullhovda AS | Wholesale & retail | 2012 |
| Ulsund Hodne Holding AS | | 2020 |
| Ultimal AS | Construction | 2019 |
| Umma Import AS | Wholesale & retail | 2021 |
| Unbuilt AS | Professional & scientific | 2026 |
| Undem Invest AS | Professional & scientific | 2010 |
| Underbakke Invest AS | Real estate | 2021 |
| Underground Gallery AS | Wholesale & retail | 2023 |
| Unibike AS | Wholesale & retail | 2022 |
| Unibil AS | Wholesale & retail | 2015 |
| Unibil Verksted AS | Other services | 2017 |
| Unicorn Invest AS | | 2019 |
| Unique Eiendom Invest AS | Real estate | 2019 |
| Unique Investments AS | Real estate | 2017 |
| Unitec Marine Ltd | Manufacturing | 2018 |
| Unitech Power Systems AS | Professional & scientific | 1998 |
| United Decontamination Services AS | Wholesale & retail | 1996 |
| United Kingdom Hydrographic Office | Manufacturing | 1999 |
| United Sports of Norway AS | Wholesale & retail | 2020 |
| United Technologies International Operations Inc | Manufacturing | 1997 |
| Unity Corporation AS | | 2025 |
| Universal Glass & Solskjerming AS | Wholesale & retail | 2014 |
| Universalis AS | Financial services | 2016 |
| Universitetsfondet for Rogaland AS | Other services | 2000 |
| Unlock Potential AS | Professional & scientific | 2019 |
| Upside Consultants AS | Professional & scientific | 2021 |
| Ur-Teknikk AS | Other services | 2007 |
| Uranostind Holding AS | | 2025 |
| Urban AS | Real estate | 2019 |
| Urban Farmer AS | Wholesale & retail | 2025 |
| Urban Sea AS | Real estate | 2017 |
| Urban Sea Development AS | Real estate | 2023 |
| Urban Sea Hotell AS | Real estate | 2017 |
| Urbanbi AS | Agriculture & fishing | 2004 |
| Urbanbike AS | Other services | 2025 |
| Urkorn AS | Manufacturing | 2019 |
| Us Real Estate AS | Real estate | 2012 |
| Uskakalven Nordøst SA | Real estate | 2009 |
| Usken Vann Og Avløp SA | Water & waste | 2016 |
| Ut I Naturen Ans | Wholesale & retail | 1993 |
| Utbjoa Bygg AS | Construction | 2022 |
| Utbjoa Rehab AS | Construction | 2023 |
| Utec NCS Survey AS | Professional & scientific | 2012 |
| Utforsk AS | Information & communication | 2020 |
| Utleiemegleren Stavanger AS | Real estate | 2005 |
| Utopia AS | Arts & recreation | 2017 |
| Utsira Nord Havvind Da | Energy | 2026 |
| Utsola AS | Real estate | 2008 |
| Utsola Energisentral AS | Energy | 2016 |
| Utsyn Sola AS | Real estate | 2012 |
| Utvikling.Org AS | Professional & scientific | 2008 |
| Utvikling.Org Kompetanse AS | Education | 2012 |
| Utxo AS | Professional & scientific | 2018 |
| Uva Import AS | Wholesale & retail | 2023 |
| Uyomajokpa AS | Professional & scientific | 2021 |
| V-Valley Invest AS | | 2021 |
| V.E.T Holding AS | | 2018 |
| V.E.T Investering AS | Financial services | 2018 |
| V2-EIENDOM AS | Real estate | 2014 |
| V2-HOLDING AS | Real estate | 2014 |
| Vaagsbyen Bolig AS | Real estate | 2012 |
| Vaaland Dampbakeri Og Conditori AS | Manufacturing | 2009 |
| Vaaland Holding AS | | 2025 |
| Vaaland Transport AS | Transport & logistics | 2017 |
| Vader AS | Professional & scientific | 2018 |
| Vagle Blå AS | Real estate | 2015 |
| Vagle Grønn AS | Real estate | 2015 |
| Vagle Industrieiendom AS | Real estate | 2022 |
| Vagle Industrihub AS | Real estate | 2023 |
| Vagle Næringspark AS | Real estate | 2010 |
| Vagle Næringspark N1 AS | Real estate | 2020 |
| Vagle Næringspark N1B AS | Real estate | 2022 |