| TB Shipping & Forwarding AS | Transport & logistics | 2002 |
| Tbakken AS | Professional & scientific | 2021 |
| Tbe Bemanning AS | Administrative & support | 2019 |
| Tcarlsen Invest AS | Manufacturing | 2019 |
| Tcrea AS | Wholesale & retail | 2025 |
| TDQ AS | Manufacturing | 2015 |
| TDT Holding AS | Construction | 2013 |
| TDV Boligutleie AS | Real estate | 2023 |
| TDV Holding AS | Real estate | 2017 |
| Te Forvaltning AS | | 2020 |
| Te-Holding AS | Real estate | 2005 |
| Teaks AS | Information & communication | 2016 |
| Teaks Eiendom AS | Real estate | 2019 |
| Teaks Gruppen AS | Information & communication | 2019 |
| Teaks Konsulent AS | Information & communication | 2020 |
| Teal Invest AS | Financial services | 2017 |
| Team Eiendom AS | Real estate | 1991 |
| Team Haukalid Ans | Construction | 2025 |
| Team Håndverk Bygg AS | Construction | 2022 |
| Team Håndverk Holding AS | Construction | 2022 |
| Team Håndverk Malerservice AS | Construction | 2023 |
| Team Ingebrigtsen AS | Arts & recreation | 2015 |
| Team Property AS | Real estate | 2019 |
| Team Stangeland Holding AS | | 2026 |
| Team Tjensvoll AS | Construction | 2023 |
| Team Trafikkskole Sandnes AS | Education | 2002 |
| Teampartner Ans | Professional & scientific | 1974 |
| Tebe Holding AS | Transport & logistics | 2005 |
| Teberg Holding AS | | 2023 |
| Technical Offshore Services Ltd | Professional & scientific | 2016 |
| Techouse AS | Professional & scientific | 2002 |
| Techouse Group AS | Professional & scientific | 2023 |
| Techseam AS | Manufacturing | 2005 |
| Techvision AS | Professional & scientific | 2021 |
| Teft Eiendom AS | Real estate | 2016 |
| Tega AS | Arts & recreation | 2018 |
| Tegulas AS | Information & communication | 2019 |
| Tehe AS | Other services | 2019 |
| Teknaconsult AS | Professional & scientific | 2005 |
| Teknikk Eiendom AS | Real estate | 2023 |
| Teknisk Multimedia AS | Wholesale & retail | 2017 |
| Teknisk Z AS | Professional & scientific | 2021 |
| Teknisk Z Holding AS | Professional & scientific | 2021 |
| Telit AS | Wholesale & retail | 1989 |
| Temy Holding AS | Construction | 2005 |
| Tengesdal Investering AS | | 2019 |
| Tengesdaltunet AS | Wholesale & retail | 2016 |
| Tenold&Skien AS | Professional & scientific | 2018 |
| Teo Bygg AS | Construction | 2025 |
| Teqva Agder Ansatte 2 AS | | 2025 |
| Teqva Agder Ansatte AS | | 2024 |
| Teqva Agder AS | Construction | 2024 |
| Teqva Gruppen AS | Construction | 1999 |
| Teqva Prosjekt AS | Professional & scientific | 2017 |
| Teqva Rogaland AS | | 2026 |
| Terje K Holding AS | | 2026 |
| Terminalvegen 1 AS | Real estate | 2012 |
| Termo Senteret AS | Wholesale & retail | 2003 |
| Terra Nullius AS | Arts & recreation | 2020 |
| Terra Nullius Productions AS | Arts & recreation | 2021 |
| Terra Stream Energy Norge AS | Professional & scientific | 2025 |
| Tertho AS | | 2016 |
| Tetra Konsult AS | Professional & scientific | 2020 |
| Texnix AS | Professional & scientific | 2024 |
| Texteam AS | Construction | 2014 |
| TF Services AS | Manufacturing | 2024 |
| Tform AS | Real estate | 2021 |
| TG Prosjekt AS | Real estate | 2006 |
| Tgi Sandnes AS | Wholesale & retail | 2009 |
| TGL Eiendom AS | Real estate | 2026 |
| TH Eiendomsselskap AS | Real estate | 2022 |
| TH Run Travels AS | Administrative & support | 2017 |
| TH Utleie AS | Administrative & support | 2024 |
| THC Holding AS | | 2022 |
| The 5TH AS | Construction | 2021 |
| The Core Studio AS | Education | 2019 |
| The Corporation AS | Information & communication | 2013 |
| The Energy Resource Company AS | Professional & scientific | 2012 |
| The Knitting Stories AS | Professional & scientific | 2021 |
| The Mice Guru AS | Administrative & support | 2018 |
| The PB Company AS | Wholesale & retail | 2021 |
| The Project Gearbox AS | Professional & scientific | 2018 |
| The Property Group AS | Real estate | 2015 |
| The Shack Drift AS | Hospitality | 2022 |
| The Shack Holding AS | Hospitality | 2022 |
| The Vault AS | | 2023 |
| Thein Holding AS | Professional & scientific | 2019 |
| Theis Holding AS | | 2024 |
| Thekchicken AS | Hospitality | 2022 |
| Theodor Dahlsvei AS | Real estate | 2015 |
| Therese Hegre AS | Real estate | 2018 |
| Therese Hegre Holding I AS | Real estate | 2018 |
| Therma Elektro AS | Wholesale & retail | 2015 |
| Thermo Control Sør-Vest AS | Construction | 2013 |
| Theva Apartments AS | Real estate | 2006 |
| Theva Apartments II AS | Real estate | 2024 |
| Theva Capital AS | | 2026 |
| Theva Eiendom AS | Real estate | 2011 |
| Theva Gruppen AS | Real estate | 2009 |
| Thevastani AS | Real estate | 2018 |