| Sølvberget Blomster Ans | Wholesale & retail | 1996 |
| Sølvberget Eiendom AS | Real estate | 2019 |
| Sølvberggata 16 AS | Real estate | 2021 |
| Sølvi Porsmo AS | Financial services | 1998 |
| Sølvlia Utbyggingsselskap AS | Real estate | 2021 |
| Sølvperlen Innvest Ans | Professional & scientific | 2007 |
| Sølvsmeden På Sølvberget AS | Wholesale & retail | 1987 |
| Søndenå Manuellterapi AS | Health & social care | 2025 |
| Sør Norge Energistasjon AS | Wholesale & retail | 2025 |
| Sør Vest Drift Og Forvaltning AS | Real estate | 2021 |
| Sørbø Holding AS | Wholesale & retail | 1996 |
| Sørbø Trelast AS | Wholesale & retail | 1972 |
| Sørbøveien 61 AS | Real estate | 2023 |
| Søregaten 14 AS | Real estate | 2005 |
| Søregaten 22 AS | Real estate | 2020 |
| Søregaten 24 AS | Real estate | 2025 |
| Søregaten 9 Ans | Real estate | 1993 |
| Søren Og Monica Invest AS | Education | 2020 |
| Sørflåtveien 59 AS | Real estate | 2005 |
| Sørflåtveien Eiendom AS | Real estate | 2006 |
| Sørkapp AS | Wholesale & retail | 2001 |
| Sørkysten AS | Construction | 2016 |
| Sørlandskjøkken Forus AS | Wholesale & retail | 2020 |
| Sørnes Bolig AS | Real estate | 2026 |
| Sørstrønen AS | Real estate | 2015 |
| Sørvest Eiendom AS | Real estate | 2021 |
| Sørvest Eiendomsmegling AS | Real estate | 2024 |
| Sørvest Elektroservice AS | Construction | 2014 |
| Sørvest Flytting AS | Transport & logistics | 2018 |
| Sørvest-Elektro AS | Construction | 2020 |
| Sørvestlig Embedded Firmware AS | Information & communication | 2026 |
| Søstrene Bie AS | Real estate | 2023 |
| Søstrene Hinna Utbygging AS | Real estate | 2019 |
| T & M Rogaland AS | Construction | 2019 |
| T Aasen Solskjerming AS | Wholesale & retail | 1989 |
| T Birkeland Invest AS | | 2024 |
| T F AS | Agriculture & fishing | 1902 |
| T Fjelland & Co AS | Wholesale & retail | 1986 |
| T Haga Invest AS | Construction | 2023 |
| T S Holding AS | Construction | 2005 |
| T Solnes AS | Information & communication | 2025 |
| T Viste Holding AS | | 2022 |
| T&C Invest AS | Hospitality | 2025 |
| T-Bite AS | Hospitality | 2023 |
| T-E Invest AS | | 2019 |
| T-Storm AS | Manufacturing | 2018 |
| T-Time Vinyl Plant AS | Information & communication | 2019 |
| T-Well AS | Professional & scientific | 2016 |
| T. Bjornoy Holding AS | | 2022 |
| T. Fjetland AS | | 2025 |
| T. Haavik Invest AS | Real estate | 2012 |
| T. Haga Holding AS | Administrative & support | 2010 |
| T. Helgø Invest AS | | 2019 |
| T. Lærdal Holding AS | Financial services | 2017 |
| T. Meling Investment AS | Real estate | 2007 |
| T. Middelthon Holding AS | Wholesale & retail | 2005 |
| T. Stangeland AS | Real estate | 2020 |
| T. W. Kristiansen Holding AS | | 2024 |
| T.D. Veen AS | Real estate | 1986 |
| T.H.B. Holding AS | Hospitality | 2005 |
| T26 Bygg AS | Construction | 2012 |
| T2C Consulting AS | Information & communication | 2024 |
| T2K Invest AS | | 2023 |
| T:Kaada AS | Professional & scientific | 2020 |
| Ta Johnsen Consulting AS | Professional & scientific | 2021 |
| Ta-Dam Renhold AS | Administrative & support | 2026 |
| Taara AS | Real estate | 1988 |
| Tab AS | Administrative & support | 2022 |
| Tabulator AS | | 2022 |
| Tac Holding AS | | 2020 |
| Tactic Da | Wholesale & retail | 1998 |
| Tactus AS | | 2021 |
| Tafs AS | | 2023 |
| Takansvar AS | Construction | 2026 |
| Taketombo AS | Professional & scientific | 2024 |
| Takin Invest AS | | 2020 |
| Taks Holding AS | Wholesale & retail | 2007 |
| Taksering AS | Real estate | 2015 |
| Taksering Sørvest AS | Real estate | 2022 |
| Taksering Vest AS | Real estate | 2021 |
| Takspesialisten Gjesdal Tak AS | Construction | 2017 |
| Takst Og Eiendom AS | Real estate | 1998 |
| Takst Og Uavhengig Kontroll AS | Professional & scientific | 2013 |
| Takst Team AS | Real estate | 2013 |
| Takst Team Holding AS | Real estate | 2024 |
| Takst-Kompaniet AS | Professional & scientific | 2025 |
| Takumi Eiendom AS | Real estate | 2024 |
| Takumi Holding AS | Wholesale & retail | 2024 |
| Takvindu Spesialisten AS | Construction | 2022 |
| Talentera AS | Administrative & support | 2025 |
| Talentfix AS | Professional & scientific | 2025 |
| Talksee AS | Professional & scientific | 2020 |
| Tam International Norway AS | Professional & scientific | 2013 |
| Tampnet AS | Information & communication | 2001 |
| Tams Eiendom AS | Real estate | 1994 |
| Tang Og Tare AS | | 2022 |
| Tangen Rva AS | Wholesale & retail | 1992 |
| Tangenes Holding AS | | 2023 |
| Tangmar AS | | 2022 |
| Tango Holding AS | Hospitality | 2013 |