| Tangvallveien 323 AS | Real estate | 2020 |
| Tanke Svilands Gate 30 AS | Real estate | 2024 |
| Tanke Svilands Gate 32 AS | Real estate | 2024 |
| Tankedesign AS | Professional & scientific | 2020 |
| Tanken AS | Wholesale & retail | 2016 |
| Tanken Eiendom AS | Wholesale & retail | 2017 |
| Tanken Energi AS | Wholesale & retail | 2018 |
| Tankvegen 1 AS | Real estate | 2021 |
| Tanngarden Eiendom AS | Real estate | 2009 |
| Tannhelse Klinikk AS | Health & social care | 2026 |
| Tannkirurgi AS | Health & social care | 2021 |
| Tannlege Andreas Rabanal AS | Health & social care | 2024 |
| Tannlege Anne Blomgren Grindheim AS | Health & social care | 2015 |
| Tannlege Anne Renate Aasen AS | Health & social care | 2019 |
| Tannlege Anne Renate Aasen Eiendom AS | Real estate | 2024 |
| Tannlege Christian Tønnessen AS | Health & social care | 2010 |
| Tannlege Elin Stuland Steinsland AS | Health & social care | 2023 |
| Tannlege Engevik AS | Health & social care | 2026 |
| Tannlege Follegg AS | Health & social care | 2004 |
| Tannlege Gro Knudsen AS | Health & social care | 2006 |
| Tannlege Hamid Hosseini AS | Health & social care | 2008 |
| Tannlege Justina Haukelid AS | Health & social care | 2024 |
| Tannlege Kirsten Øvestad AS | Health & social care | 2006 |
| Tannlege Knudsen AS | Health & social care | 2020 |
| Tannlege Ole CHR. Amundsen AS | Health & social care | 2005 |
| Tannlege Ole Henrik Nag AS | Health & social care | 2005 |
| Tannlege Raugstad AS | Health & social care | 2021 |
| Tannlege Rolf Terje Alvær AS | Health & social care | 2021 |
| Tannlege Rung AS | Health & social care | 2025 |
| Tannlege Spyridon Psonis AS | Health & social care | 2018 |
| Tannlege Stein Espenæs AS | Health & social care | 2008 |
| Tannlege Tora Scandellari AS | Health & social care | 2025 |
| Tannlege Trude Namtvedt AS | Health & social care | 2025 |
| Tannlegene Engelsgjerd Og Eggen Da | Health & social care | 2014 |
| Tannlegene Hetland AS | Health & social care | 1998 |
| Tannlegene Kaland AS | Health & social care | 2009 |
| Tannlegene Larsen Og Bøe AS | Health & social care | 2009 |
| Tannlegene På Sølvberget AS | Health & social care | 2016 |
| Tao Invest AS | Financial services | 2005 |
| Tap AS | | 2021 |
| Tarax AS | Professional & scientific | 2021 |
| Tarax Interim AS | Professional & scientific | 2024 |
| Tasc AS | | 2021 |
| Task Solutions AS | Information & communication | 2017 |
| Tass Holding AS | Real estate | 2019 |
| Tasta Brygge AS | Real estate | 2006 |
| Tasta Drilling AS | Mining & quarrying | 2017 |
| Tasta Eiendom AS | Real estate | 1991 |
| Tasta Felt 12 Ba | Real estate | 1989 |
| Tasta Helseloft AS | Real estate | 2013 |
| Tasta Investment AS | Real estate | 2008 |
| Tasta Legesenter AS | Health & social care | 2025 |
| Tasta Pizza AS | Hospitality | 1996 |
| Tasta Rør AS | Construction | 2006 |
| Tasta Service AS | Construction | 2016 |
| Tasta Tannklinikk AS | Health & social care | 2025 |
| Tastagaten 30-32B AS | Real estate | 2005 |
| Tastagaten Drift AS | Real estate | 2017 |
| Tatino AS | Education | 2014 |
| Taugata 25 FMM AS | Real estate | 2022 |
| Taurus Consulting AS | Real estate | 2004 |
| Taxi 7 Stavanger SA | Transport & logistics | 2021 |
| Taxiakademiet AS | Education | 2021 |
| Taz AS | Health & social care | 2026 |
| TB Asheim Invest AS | | 2023 |
| TB Eiendom AS | Real estate | 1946 |
| TC Automation AS | Professional & scientific | 2025 |
| TC Bolig AS | Real estate | 2017 |
| TCS Invest AS | Professional & scientific | 2016 |
| Tde Norge AS | Information & communication | 2012 |
| TDM Nordic AS | Wholesale & retail | 2025 |
| TDW Offshore Services AS | Mining & quarrying | 1998 |
| Te Hamre AS | Real estate | 2020 |
| Te Tama AS | Wholesale & retail | 2002 |
| Teak AS | Real estate | 2022 |
| Team Amdal AS | Other services | 2019 |
| Team Aske AS | Information & communication | 2021 |
| Team Beredskap Sp/F | Transport & logistics | 2007 |
| Team C AS | | 2022 |
| Team Invest AS | Real estate | 1997 |
| Team Sail Stavanger AS | Financial services | 2001 |
| Team Studio AS | Arts & recreation | 2007 |
| Team Victoria AS | Hospitality | 2017 |
| Tebi Invest AS | Agriculture & fishing | 2022 |
| Tech Trade AS | Wholesale & retail | 2004 |
| Tech-Vekst AS | Professional & scientific | 2013 |
| Techbekk AS | | 2024 |
| Techkon AS | Financial services | 2005 |
| Technical Entry AS | Professional & scientific | 2020 |
| Technical Entry Eiendom AS | Real estate | 2021 |
| Technika AS | | 2020 |
| Techno Marine AS | Manufacturing | 1999 |
| Techno Solutions AS | Professional & scientific | 2013 |
| Technology Invest AS | Real estate | 2013 |
| Technology Venture AS | Real estate | 2007 |
| Techsplained AS | Professional & scientific | 2019 |
| Techtool AS | Professional & scientific | 2000 |
| Techvalid AS | Professional & scientific | 2019 |
| Tecno Sub Ans | Wholesale & retail | 1994 |
| Teekay Chartering Ltd | Transport & logistics | 2005 |