| Sr-Boligkreditt AS | Financial services | 2015 |
| SRH Eiendom Holding AS | Real estate | 2016 |
| Srx-Tec AS | Professional & scientific | 2017 |
| Ssasgs Holding AS | | 2025 |
| SSB Private Equity 1 AS | Financial services | 2006 |
| SSB Private Equity I KS | Financial services | 2006 |
| SSS Utleie AS | Administrative & support | 2021 |
| ST Olav Finans AS | | 1996 |
| ST Svithun Hotell AS | Hospitality | 2004 |
| ST. 13.NO AS | Administrative & support | 2018 |
| ST. Hansgt 8 AS | Real estate | 1987 |
| ST. Olav Hall AS | Professional & scientific | 2026 |
| ST. Olav Helse Eiendom AS | Real estate | 2026 |
| ST. Olav Legegruppe AS | Health & social care | 2015 |
| ST. Olavs Gate 7 AS | Real estate | 2022 |
| ST. Svithunsgt 5 AS | Real estate | 2004 |
| Stabco AS | | 2016 |
| Stafangr AS | | 2025 |
| Stafr Consulting AS | Professional & scientific | 2021 |
| Stalfo Holding AS | Financial services | 2016 |
| Stamas Holding AS | Real estate | 2008 |
| Stamas Solutions AS | Manufacturing | 2001 |
| Stamme AS | | 2025 |
| Standard Aksjeselskap | Professional & scientific | 2020 |
| Standard Lmtd AS | Real estate | 2008 |
| Standup Stavanger AS | Administrative & support | 2025 |
| Stangeland Eiendom Ans | | 1989 |
| Stangeland Og Svendsen AS | Real estate | 2017 |
| Stani Holding AS | Financial services | 2016 |
| Staq AS | Information & communication | 2021 |
| Star Regnskap AS | Professional & scientific | 2004 |
| Star-Tech AS | Real estate | 2025 |
| Starag Invest AS | Administrative & support | 2005 |
| Starflow AS | Professional & scientific | 2024 |
| Starfoundry AS | | 2019 |
| Staria Norway AS | Professional & scientific | 2020 |
| Starkey Norway AS | Wholesale & retail | 1995 |
| Start Regnskap AS | Professional & scientific | 2009 |
| Startsoft AS | Information & communication | 2007 |
| Startup Invest 2 AS | | 2024 |
| Startup Invest AS | Professional & scientific | 2019 |
| Stas Eiendom AS | Real estate | 2020 |
| Stas Innovasjon AS | | 2020 |
| Stas Og Fjas AS | Wholesale & retail | 2021 |
| Stasysrent AS | Administrative & support | 2026 |
| Stat Marine S.A.S | Mining & quarrying | 2005 |
| Statholding AS | Mining & quarrying | 1999 |
| Station Forus AS | Real estate | 2011 |
| Statoil Iran AS | Mining & quarrying | 2001 |
| Statoil SP Gas AS | Mining & quarrying | 2002 |
| Statoil Zagros Oil and Gas AS | Mining & quarrying | 1998 |
| Stav Arkitekter AS | Professional & scientific | 2023 |
| Stav AS | | 2020 |
| Stav Eiendom AS | Real estate | 2011 |
| Stav Eiendom Holding AS | Professional & scientific | 2023 |
| Stav Utvikling AS | Real estate | 2021 |
| Stavanger Aftenblad AS | Information & communication | 2006 |
| Stavanger Apartment Hotelldrift AS | | 2022 |
| Stavanger Artistbyrå AS | Professional & scientific | 1998 |
| Stavanger Asset Management AS | Financial services | 2009 |
| Stavanger Automatservice Da | Manufacturing | 1999 |
| Stavanger Autosalg AS | Wholesale & retail | 2020 |
| Stavanger Badstuer AS | Other services | 2020 |
| Stavanger Bil & Elektro AS | Other services | 1996 |
| Stavanger Bilsalg AS | Transport & logistics | 2013 |
| Stavanger Blikk AS | Construction | 2026 |
| Stavanger Blikk AS | Manufacturing | 2012 |
| Stavanger Blomster AS | Wholesale & retail | 2003 |
| Stavanger Bolig AS | Real estate | 2007 |
| Stavanger Bolig Formidling AS | Real estate | 2012 |
| Stavanger Boliginvest AS | Real estate | 2016 |
| Stavanger Boligtakst AS | Real estate | 2026 |
| Stavanger Boligutleie AS | Real estate | 2003 |
| Stavanger Brisling Packing Co AS | Real estate | 1919 |
| Stavanger Brøyting AS | Administrative & support | 2024 |
| Stavanger Bygg & Rehabilitering AS | Construction | 2026 |
| Stavanger Bygg & Stilas AS | | 2017 |
| Stavanger Bådsenter AS | Wholesale & retail | 2019 |
| Stavanger Camping AS | Real estate | 2016 |
| Stavanger Campingdrift AS | Hospitality | 2017 |
| Stavanger Catering AS | Hospitality | 2021 |
| Stavanger Central Apartments AS | Real estate | 2023 |
| Stavanger Conditori - Avd. Godesetdalen AS | Manufacturing | 2024 |
| Stavanger Conditori - Avd. Sissels AS | Wholesale & retail | 2024 |
| Stavanger Dekksenter AS | Wholesale & retail | 2009 |
| Stavanger Dykkersenter AS | Wholesale & retail | 2014 |
| Stavanger Eiendomsformidling AS | Real estate | 2006 |
| Stavanger Eiendomsmegling AS | Real estate | 2014 |
| Stavanger Elektriske AS | Construction | 2013 |
| Stavanger Elektro AS | Construction | 2016 |
| Stavanger Engineering AS | Professional & scientific | 2018 |
| Stavanger Entreprise AS | Construction | 2012 |
| Stavanger Exotic Mat AS | Wholesale & retail | 2024 |
| Stavanger Figur & Smerteklinikk AS | Health & social care | 2016 |
| Stavanger Flyttebyrå AS | Transport & logistics | 2015 |
| Stavanger Fortøyning AS | Transport & logistics | 2025 |
| Stavanger Forum AS | Administrative & support | 1999 |
| Stavanger Forvaltning AS | Financial services | 1992 |
| Stavanger Fun & Games AS | Hospitality | 2025 |
| Stavanger Glød AS | Administrative & support | 2023 |