| Sydland Eiendom AS | Real estate | 2018 |
| Sydnes AS | | 2023 |
| Synchronicity Media AS | Information & communication | 2024 |
| Synchronicity Media Europe AS | Information & communication | 2025 |
| Sysman AS | Information & communication | 2015 |
| Sæbø Bygg & Interiør AS | Construction | 2003 |
| Sætrevegen AS | Real estate | 2016 |
| Søre Skogvei 50 AS | Real estate | 1958 |
| T.B. Holding AS | Health & social care | 2005 |
| Ta Consulting AS | Financial services | 2007 |
| Tak Og Ventilasjon AS | Wholesale & retail | 2019 |
| Takstingeniør Gisle Dyngeland AS | Real estate | 2023 |
| Takstoppdrag AS | Real estate | 2009 |
| Talent AS | Financial services | 2014 |
| Tannlege a G Martem AS | Health & social care | 2002 |
| Tannlege Beate Kleivdal AS | Health & social care | 2013 |
| Tannlege Jonas Blom AS | Health & social care | 2014 |
| Tannlege Silje Haustveit AS | Health & social care | 2014 |
| TANTOR65 AS | Financial services | 2009 |
| Taste Home AS | Hospitality | 2026 |
| Tditd Invest AS | | 2021 |
| Te to Da | Health & social care | 2008 |
| Tea Eiendom AS | Real estate | 2009 |
| Team Haarlokken AS | Other services | 2014 |
| Team Medie AS | Professional & scientific | 2026 |
| Team Service Bech AS | Administrative & support | 2017 |
| Team Service Pedersen AS | Administrative & support | 2016 |
| Techeriet Holding AS | | 2026 |
| Teige Thomassen Holding AS | Financial services | 2013 |
| Teigland Eiendom AS | Real estate | 1940 |
| Teigland Åsane AS | Financial services | 1969 |
| Teknikon AS | Construction | 2026 |
| Teknisk Industrivern AS | Wholesale & retail | 2024 |
| Tele Com Bergen AS | Information & communication | 1989 |
| Telematikk Invest AS | Wholesale & retail | 2005 |
| Telemedisin AS | Wholesale & retail | 1997 |
| Tellnes Næringspark Tomt 3 AS | Real estate | 2009 |
| Temda Holding AS | | 2018 |
| Teppehuset AS | Wholesale & retail | 1960 |
| Teruel AS | Professional & scientific | 2007 |
| Tessara AS | Information & communication | 2025 |
| Tevas AS | Construction | 2000 |
| Textur AS | Real estate | 2014 |
| TGP AS | Financial services | 2005 |
| Than Holding AS | | 2022 |
| This Is You AS | Other services | 2024 |
| Thor Heldal AS | Wholesale & retail | 1995 |
| Thor-Com AS | Information & communication | 2012 |
| Throll Eiendom AS | Real estate | 2021 |
| Throll Holding AS | Real estate | 2005 |
| Tifra AS | Education | 2021 |
| Tilis AS | Professional & scientific | 2005 |
| Tina Future AS | Manufacturing | 2021 |
| Tina Tann AS | Wholesale & retail | 2018 |
| Tins Invest AS | | 2025 |
| Tiotech AS | Professional & scientific | 1996 |
| Tko Invest AS | Real estate | 2016 |
| Tlef Invest AS | Real estate | 2018 |
| TLK Invest AS | | 2019 |
| Tlns AS | Information & communication | 2023 |
| Tlss Invest AS | | 2020 |
| TLT Invest AS | Financial services | 2005 |
| To Kanten AS | Real estate | 1993 |
| To Og to Eiendom AS | | 2007 |
| TO2 Invest AS | | 2023 |
| Toha Shipping AS | Professional & scientific | 2009 |
| Tomahawk AS | Financial services | 2006 |
| Tomin AS | Financial services | 2005 |
| Tomitech AS | Manufacturing | 1990 |
| Topp Areal AS | Real estate | 2009 |
| Toppenhaug AS | Professional & scientific | 1997 |
| Toppenhaug II AS | Real estate | 2009 |
| Toppsundet Holding AS | | 2019 |
| Torghuset AS | Real estate | 1985 |
| Torokato AS | Real estate | 2014 |
| Torvetua Huseierlag SA | Other services | 2000 |
| Total Kropp AS | Health & social care | 2015 |
| Total Kropp Fana AS | Health & social care | 2012 |
| Totland Blikk AS | Construction | 2012 |
| Trade AS | Education | 2018 |
| Trans World Invest AS | Information & communication | 2003 |
| Transport Og Maskindrift AS | Transport & logistics | 2018 |
| Trehusene På Straume AS | Real estate | 2023 |
| Trilby AS | Transport & logistics | 2005 |
| Tronshaug AS | Professional & scientific | 2019 |
| True Wind AS | Professional & scientific | 2024 |
| Tryg Transport AS | Transport & logistics | 2021 |
| Trygg Montering AS | Financial services | 2008 |
| Trygge Rom AS | Real estate | 1982 |
| Trysil Kildevann AS | Water & waste | 2019 |
| TS Lauritzen Holding AS | | 2026 |
| Tsquared AS | | 2024 |
| TTL Invest AS | Financial services | 2007 |
| Tullah AS | | 2013 |
| Tvedt & Llewellyn Eiendom AS | Real estate | 2002 |
| Ullebulle Invest AS | | 2025 |
| Ulriksdal Helsepark AS | Real estate | 1962 |
| Ulsmåg Næringspark AS | Real estate | 2020 |
| Ulsmågvegen 20 AS | Real estate | 2020 |
| Ulsmågvegen 28 AS | Administrative & support | 2009 |