| Swipp Rental AS | Administrative & support | 2025 |
| Swiss Import AS | Wholesale & retail | 1966 |
| Switchcraft AS | Information & communication | 2017 |
| Swoop Consulting AS | Professional & scientific | 2016 |
| Swoop Group AS | Professional & scientific | 2016 |
| SXP Capital AS | | 2022 |
| Sy Marketing AS | Information & communication | 2021 |
| Sybility AS | Information & communication | 2002 |
| Syd Drift AS | Hospitality | 2026 |
| Syde AS | Professional & scientific | 2023 |
| Sydnesplass 1 AS | Real estate | 2008 |
| Sydover AS | Real estate | 2003 |
| Sydspissen AS | | 2022 |
| Sydvestover AS | Real estate | 2017 |
| Sykkelbutikken AS | Wholesale & retail | 1981 |
| Sykkelbutikken Holding AS | Wholesale & retail | 2015 |
| Sylta Holding AS | Real estate | 2021 |
| Sylvester Invest AS | Real estate | 2006 |
| Sylvi Ann Harila Kreativt Hjerte Nuf | Arts & recreation | 2010 |
| Symaskineksperten AS | Wholesale & retail | 2024 |
| Syme Da | Arts & recreation | 2007 |
| Syng På Bergensk AS | Hospitality | 2024 |
| Synim AS | Information & communication | 2026 |
| Synlighet AS | Professional & scientific | 2008 |
| Synopp AS | Information & communication | 2025 |
| Synora AS | Professional & scientific | 2025 |
| Synsvern AS | Health & social care | 2018 |
| Syntax to AS | Information & communication | 2019 |
| Sysla AS | Information & communication | 2026 |
| Sysrupt AS | | 2026 |
| System Norge AS | Wholesale & retail | 2025 |
| System Norge Holding AS | | 2025 |
| System Technic Solution AS | Construction | 2015 |
| Syv Mil AS | Arts & recreation | 2019 |
| Syvertsen Consulting AS | Professional & scientific | 2023 |
| Sze Chuan House AS | Hospitality | 2002 |
| Schee Aas & Mowinckel AS | Real estate | 1929 |
| Sollien 28-30-37-39 AS | Households | 1952 |
| Spekter Invest 1 AS | Real estate | 1986 |
| Strandgaten 68 AS | Real estate | 1982 |
| Suitell Edvard Grieg A/S | Real estate | 1986 |
| Sånnja Holding AS | Professional & scientific | 2021 |
| Sædalen Idrettspark AS | Arts & recreation | 2022 |
| Sædalshaugen Huseierlag SA | Real estate | 2004 |
| Sælen Holding AS | Real estate | 2016 |
| Sæthre Stenindustri AS | Manufacturing | 2017 |
| Sæthre Stenindustri Eiendom AS | Real estate | 2017 |
| Sætre Holding AS | Financial services | 2005 |
| Sætrevik Interiørsnekkeri AS | Manufacturing | 2002 |
| Sævereid Consulting AS | Information & communication | 2019 |
| Sævereid Invest AS | Information & communication | 2019 |
| Sævik Consult & Invest AS | Wholesale & retail | 2005 |
| Sævold Eftf Trykkeri Ans | Manufacturing | 1990 |
| Søgnen Kalstveit Arkitektar AS | Professional & scientific | 2020 |
| Sølvgran AS | | 2024 |
| Sølvrev AS | Information & communication | 2015 |
| Søndre Erleveien Boliglag AS | Households | 1956 |
| Søndre Kleivesmauet 1C AS | Real estate | 2020 |
| Søndre Skogvei 63C AS | Real estate | 2020 |
| Søndre Skogveien 32 AS | Real estate | 2006 |
| Sørbu Da | Real estate | 2015 |
| Søreide Revisjon AS | Professional & scientific | 1976 |
| Søreidepollen BB2 AS | Real estate | 2021 |
| Søreidåsen Panorama AS | Real estate | 2021 |
| Sørensen Edb AS | Information & communication | 2022 |
| Sørensen Tobakk AS | Wholesale & retail | 2016 |
| Sørevik Holding AS | | 2025 |
| Sørfonn Invest AS | | 2026 |
| Sørfonn Psykologpraksis AS | Health & social care | 2014 |
| Sørlandssjokolade AS | Manufacturing | 2022 |
| Søskeninvest Clothing AS | Wholesale & retail | 2025 |
| Søstre Da | Arts & recreation | 2018 |
| Søstrene Hagelin AS | Hospitality | 2009 |
| Søtt AS | Financial services | 2005 |
| Søvik Prosess Partner AS | Professional & scientific | 1998 |
| Søvikneset Stein Aage AS | Real estate | 2015 |
| T Bar AS | Hospitality | 2019 |
| T&D Bygg AS | Construction | 2024 |
| T&S HMS AS | Health & social care | 2014 |
| T&T&T AS | Financial services | 2005 |
| T-Zym AS | Transport & logistics | 2008 |
| T. Brynjulfsen AS | Real estate | 2016 |
| T. Brynjulfsen Næring AS | Real estate | 2006 |
| T. Mælen AS | | 2020 |
| T.Gray Holding AS | | 2026 |
| T.H.V Holding AS | | 2024 |
| T.O.M. Holding AS | Real estate | 2006 |
| T.T.T Holding AS | | 2026 |
| Ta Elektro AS | | 2019 |
| Ta Grep AS | Arts & recreation | 2024 |
| Ta Helgheim Holding AS | Information & communication | 2015 |
| Ta Wikholm Holding AS | | 2022 |
| Tafa Clothing Da | Wholesale & retail | 1995 |
| Tag Holding AS | Financial services | 2011 |
| Tage Sande Holding AS | | 2025 |
| Tailwind Management AS | Transport & logistics | 2002 |
| Taj Mahal Tandoori Restaurant AS | Hospitality | 2016 |
| Tak Og Grunn Entreprenør AS | Administrative & support | 2026 |
| Takpro AS | Construction | 2024 |
| Takst Partner Vest AS | Professional & scientific | 2017 |