| Spitze AS | Professional & scientific | 2006 |
| Sportquantum Norge AS | Wholesale & retail | 2020 |
| Spring Equinox Sales AS | Wholesale & retail | 2025 |
| SR Group AS | Transport & logistics | 1994 |
| Sra AS | Real estate | 2008 |
| SRG Holding AS | Transport & logistics | 2009 |
| SRJ Holding AS | | 2021 |
| Stavanger Apartments AS | Real estate | 2005 |
| Stavanger Bemanning AS | Administrative & support | 2022 |
| Stavanger Conditori - Avd. Tananger AS | Manufacturing | 2024 |
| Stavanger Short Sea Terminals AS | Transport & logistics | 2020 |
| Stavanger Well Services AS | Administrative & support | 2012 |
| Stavangerregionen Havn Eiendom AS | Transport & logistics | 2004 |
| Stavangerregionen Havnedrift AS | Transport & logistics | 1994 |
| Steinkopf AS | Professional & scientific | 2013 |
| Steinkopf Medical AS | Wholesale & retail | 2020 |
| Step Invest AS | Professional & scientific | 2021 |
| Stephen Copeland Limited | Professional & scientific | 2020 |
| Stram Fitness AS | Information & communication | 2020 |
| Stølslia Vann Og Avløp AS | Water & waste | 2021 |
| Subcem AS | Wholesale & retail | 2021 |
| Subsea Solutions AS | Wholesale & retail | 2016 |
| Subsurface AS | Professional & scientific | 2015 |
| Supplert AS | Professional & scientific | 2022 |
| Svartlosen SA | Arts & recreation | 2016 |
| Sydvest AS | Information & communication | 2026 |
| Søiland Eiendom AS | Real estate | 2005 |
| Sørsea AS | Real estate | 2007 |
| Sørskot AS | Transport & logistics | 2011 |
| Sørvest Kapital & Invest AS | Real estate | 2025 |
| T. Lothe Holding AS | | 2025 |
| Tab Investering AS | Real estate | 2007 |
| Tailor Home AS | Real estate | 2005 |
| Talinc AS | Information & communication | 2015 |
| Tananger Blomster AS | Wholesale & retail | 2006 |
| Tananger Data AS | Information & communication | 2021 |
| Tananger Dyreklinikk AS | Professional & scientific | 2019 |
| Tananger Eiendom AS | Real estate | 1996 |
| Tananger Enterprise AS | Real estate | 2009 |
| Tananger Frisør & Parfymeri AS | Other services | 2009 |
| Tananger Fysikalske Institutt AS | Health & social care | 2015 |
| Tananger Holding AS | Administrative & support | 1998 |
| Tananger Invest AS | Real estate | 1998 |
| Tananger Legesenter Da | Health & social care | 2008 |
| Tananger Leilighetshotell AS | Real estate | 2021 |
| Tananger Medispa AS | Other services | 2025 |
| Tananger Mur & Bygg AS | Construction | 2018 |
| Tananger Outlet AS | Wholesale & retail | 2021 |
| Tananger Pizza AS | Hospitality | 2007 |
| Tananger Pizza House AS | Hospitality | 2025 |
| Tananger Senter AS | Real estate | 1995 |
| Tananger Sjømat AS | Agriculture & fishing | 2018 |
| Tananger Sko Da | Wholesale & retail | 2001 |
| Tananger Sushi AS | Hospitality | 2021 |
| Tananger Transport Da | Transport & logistics | 2011 |
| Tananger Treningssenter AS | Arts & recreation | 2020 |
| Tangen 2A AS | Real estate | 2022 |
| Tangen 7 AS | Real estate | 2023 |
| Tangen 7 Eiendom AS | Real estate | 2023 |
| Tango Lima Holding AS | | 2015 |
| Tannlege Gunn Tove Jensen AS | Health & social care | 2013 |
| Tannlege Harriet Haug AS | Health & social care | 2012 |
| Tannlege Karoline Åsnes AS | Health & social care | 2018 |
| Taxa AS | Transport & logistics | 2024 |
| TB Forvalting AS | Wholesale & retail | 2004 |
| Team VVS AS | Construction | 2015 |
| Tedd AS | | 2016 |
| Tega Group AS | Wholesale & retail | 2020 |
| Tega Supply AS | Wholesale & retail | 2020 |
| Tellus Logistics AS | Transport & logistics | 2013 |
| Tenaris Global Services Norway AS | Wholesale & retail | 1996 |
| Tenknytt AS | Real estate | 2015 |
| Tern AS | Real estate | 1988 |
| TETRA TECHNOLOGIES NORGE Norsk avdeling av utenlandsk foretak NUF | Wholesale & retail | 1995 |
| Thrymheim AS | Real estate | 2021 |
| Time for Leisure and Family AS | Real estate | 2022 |
| Tinde Holding AS | | 2025 |
| Tknag Invest AS | Financial services | 2017 |
| Tngroup AS | Professional & scientific | 2021 |
| Tollgården AS | Real estate | 1997 |
| Tollgården Invest AS | | 2022 |
| Tornado Invest AS | | 2019 |
| Tove Tyberø Consulting AS | Professional & scientific | 2023 |
| Traah Eiendom AS | Real estate | 2022 |
| Traah Holding AS | Wholesale & retail | 2022 |
| Trafikk Kompetanse AS | Education | 2013 |
| Trescal Norway AS | Professional & scientific | 1989 |
| Trimaha AS | | 2026 |
| Trinity Services AS | Information & communication | 2026 |
| Trygg Økonomistyring AS | Professional & scientific | 2022 |
| TSS Group AS | Real estate | 2018 |
| TSS Verksted AS | Other services | 2018 |
| Tunnel Development AS | Professional & scientific | 2017 |
| Tunnelvision AS | Professional & scientific | 2024 |
| Turris AS | Real estate | 2007 |
| Two Dots AS | | 2026 |
| Tyberø Invest AS | | 2026 |
| Tyr Trading AS | | 2024 |
| Tønn Invest AS | | 2024 |
| Ulf Hjelmeland Invest AS | | 2025 |