| Terapino Gift Da | Professional & scientific | 2000 |
| Terminalgata 10 AS | Real estate | 2019 |
| Termoteknikk Varmepumper AS | Construction | 2014 |
| Terrace Invest AS | | 2021 |
| Tgo Holding AS | | 2023 |
| Thai Living Company Ltd. | | 2006 |
| Thaulow AS | Arts & recreation | 2011 |
| The Dutch Sandwich Bakery AS | | 2017 |
| The Fregus AS | Real estate | 2023 |
| The Fregus Holding AS | | 2025 |
| Thoeneie AS | Real estate | 2025 |
| Thojo AS | | 2020 |
| Thrane-Steen Forvaltning AS | Financial services | 2005 |
| Thrane-Steen Forvaltning Holding AS | | 2021 |
| Thunderstruck AS | | 2022 |
| Tibidabo Industrier AS | Professional & scientific | 2007 |
| Tibidabo Invest AS | Professional & scientific | 2022 |
| Ties AS | | 2022 |
| Tifa Eiendom AS | Real estate | 2006 |
| Tirsdag Navnklubb Da | Professional & scientific | 2000 |
| Tjernsrud Holding AS | | 2019 |
| TL - Investeringer AS | Real estate | 2017 |
| Tmml Holding AS | | 2021 |
| To Cappucci Nå Da | Professional & scientific | 2000 |
| Tolk for Murer Da | Professional & scientific | 2000 |
| Tonetoner AS | | 2023 |
| Torgerson Invest AS | Financial services | 2016 |
| Torggatens Bad Og Rom Da | Professional & scientific | 2000 |
| Tossa AS | Real estate | 2005 |
| Totalbygg Norge AS | | 2022 |
| Totalsearch AS | Professional & scientific | 2023 |
| Toy Og Hund Da | Professional & scientific | 2000 |
| Training Norge AS | Education | 2014 |
| Trane AS | Professional & scientific | 2014 |
| Transformator AS | Professional & scientific | 2006 |
| Trapeze Networks B.V | Information & communication | 2007 |
| Travelfact AS | Information & communication | 2016 |
| Travelserivice Fredag I Rio Da | Professional & scientific | 2000 |
| Tre Og Dekk Da | Professional & scientific | 2000 |
| Trekonsept Holding AS | | 2023 |
| Trkl AS | Real estate | 2020 |
| Trondheimstorgetno Da | Information & communication | 2000 |
| Trono Moter Da | Professional & scientific | 2000 |
| Trygvis Io AS | Information & communication | 2015 |
| Tuddal Bodutleie AS | Real estate | 2022 |
| Tungavegen 32 AS | Real estate | 2020 |
| Turist Ordboken Da | Professional & scientific | 2000 |
| Turno Rulleski Og Sekker Da | Professional & scientific | 2000 |
| Tut for TOP20 Da | Information & communication | 2000 |
| Tvilende Jungfrau Angst Da | Professional & scientific | 2000 |
| TW Invest Holding AS | Health & social care | 2023 |
| Twenty Four Seven AS | Financial services | 2003 |
| Tøffe Barnehage SA | Education | 1989 |
| Tønder Halle Company AS | | 2023 |
| U. R. Bygg AS | Real estate | 2006 |
| Uchermann Jewellery AS | Wholesale & retail | 2022 |
| Ugly Jack Da | Arts & recreation | 2010 |
| Uhost.No Da | Information & communication | 2015 |
| Ukeblader Og Snekker Da | Professional & scientific | 2000 |
| Ukens Pedikyr Da | Professional & scientific | 2000 |
| Ulanbaator Dameinstitutt Da | Professional & scientific | 2000 |
| Ullent Kasino Da | Professional & scientific | 2000 |
| Undertoyno Da | Wholesale & retail | 2000 |
| Uni Brud Da | Professional & scientific | 2000 |
| Uni Og Leksikon Da | Professional & scientific | 2000 |
| Unisex Reaction Da | Professional & scientific | 2000 |
| Uphill Consulting AS | Professional & scientific | 2013 |
| Uroa Ventures AS | Financial services | 2013 |
| Urtidno Da | Wholesale & retail | 1999 |
| Vaalebro Holding AS | | 2005 |
| Vaktmesterhuset AS | Administrative & support | 2022 |
| Valcreco AS | Real estate | 2004 |
| Valduero AS | Real estate | 2017 |
| Valen Eiendomsutvikling AS | Real estate | 2010 |
| Valuta Vann Da | Professional & scientific | 2000 |
| Vanno Register Directory Da | Professional & scientific | 2000 |
| Veivaskeren Da | Professional & scientific | 2000 |
| Velado AS | Professional & scientific | 2007 |
| Veneli Holding AS | | 2020 |
| Verdande Invest AS | | 2022 |
| Verdina AS | Financial services | 2014 |
| Vern & Ventilasjon Da | Professional & scientific | 2000 |
| Vest Eiendomspartner Da | Real estate | 1986 |
| Vesteren Invest AS | | 2020 |
| Vev for Luga Da | Professional & scientific | 2000 |
| Vi Griller AS | Other services | 2022 |
| Vibeke Klemetsen AS | Education | 2012 |
| Vida Holding AS | | 2004 |
| Video Dir Da | Professional & scientific | 2000 |
| Vik Torg AS | Real estate | 1998 |
| Vik Torg Holding AS | Real estate | 2024 |
| Viking Analytics AS | Information & communication | 2025 |
| Viluma Invest AS | Real estate | 2013 |
| Vin Megler Gutta Da | Professional & scientific | 2000 |
| Vindern Makeup Da | Professional & scientific | 2000 |
| Vindus Snekkere Og Murere Da | Professional & scientific | 2000 |
| Vise Invest AS | | 2020 |
| Vital Praksis AS | Health & social care | 2022 |
| Viva Snobrett & Wax Da | Professional & scientific | 2000 |
| Vivir AS | Real estate | 2013 |