| Roadcap AS | Professional & scientific | 2017 |
| Roar Rødne AS | Financial services | 2005 |
| Robust Boligutleie AS | Real estate | 2012 |
| Rockflow AS | Professional & scientific | 2026 |
| Rogaland Aktiv AS | Arts & recreation | 2016 |
| Rosenberg Worley AS | Manufacturing | 2002 |
| Rudlang Holding AS | | 2021 |
| Rume AS | | 2022 |
| Rumis AS | Professional & scientific | 2024 |
| Rune Sunde AS | Wholesale & retail | 1986 |
| Russell Services AS | Professional & scientific | 2025 |
| Ruter Trål Ans | Agriculture & fishing | 2004 |
| Røise Invest AS | | 2021 |
| S Brataas AS | Real estate | 2006 |
| Safe Service Ans | Administrative & support | 1997 |
| Saltrom AS | Other services | 2025 |
| Samland Taksering AS | Professional & scientific | 2018 |
| Sandnes Bilimport AS | Wholesale & retail | 2018 |
| Saw Holding AS | | 2007 |
| Scandic Software AS | Information & communication | 2016 |
| Scanpiping OY Nuf | Manufacturing | 2024 |
| Seal Consult AS | Education | 2023 |
| Seiv Invest AS | | 2021 |
| Seko AS | Wholesale & retail | 2002 |
| Selhund Invest AS | Professional & scientific | 2026 |
| Selteco AS | Agriculture & fishing | 1987 |
| Sentrum Boligformidling Da | Real estate | 2001 |
| Seo Eksperten Ltd Nuf | Transport & logistics | 2021 |
| Serich Invest AS | | 2025 |
| Sesna Invest AS | | 2023 |
| Seven Ate Nine AS | Education | 2024 |
| SGR Invest AS | Professional & scientific | 2016 |
| Sheikh Holdings AS | | 2020 |
| Shestainability AS | Education | 2020 |
| Siførland Consulting AS | Professional & scientific | 2016 |
| Siglo Invest AS | Real estate | 2005 |
| Sigurd Eike AS | Construction | 1990 |
| Sikkerhet Om Bord AS | Wholesale & retail | 2025 |
| Simatic AS | Professional & scientific | 2026 |
| Sirevaag Investments Ltd Nuf | Wholesale & retail | 2005 |
| Sirius Holding Stavanger AS | Professional & scientific | 2019 |
| Sivertsen Tech AS | | 2021 |
| Sivilarkitekt Kristin Gustavsen AS | Professional & scientific | 2015 |
| SJ Thai Import AS | Wholesale & retail | 2021 |
| SK6 Holding AS | | 2022 |
| Skartveit Stasjonsdrift AS | Wholesale & retail | 2019 |
| SKH Kapital AS | Construction | 2023 |
| Skifo AS | Wholesale & retail | 2019 |
| Skjenkeveien Invest AS | | 2026 |
| Skjortefonn AS | | 2024 |
| Skjærgårds Charter & Catering AS | Real estate | 2018 |
| Skjærgårdscruise AS | Transport & logistics | 2026 |
| Skyon AS | Information & communication | 1996 |
| SM Helland Kapital AS | Professional & scientific | 2026 |
| Smartbo Riska AS | Real estate | 2006 |
| Snapping Turtles AS | Financial services | 2014 |
| Sol & Skygge AS | Wholesale & retail | 2006 |
| Sola Miljø Container AS | Water & waste | 1994 |
| Solheim Holding AS | | 2021 |
| Solhus Park AS | Real estate | 2014 |
| Soul Life AS | Professional & scientific | 2014 |
| Sparky AS | Financial services | 2015 |
| Spectatio Finans AS | Financial services | 2005 |
| Spmh AS | Real estate | 2023 |
| Sport 1 Hundvåg AS | Wholesale & retail | 2012 |
| SR Eiendommer Og Utleie AS | Real estate | 2025 |
| Stavanger Barnefysioterapi AS | Health & social care | 2017 |
| Stavanger Boligfotograf AS | Professional & scientific | 2024 |
| Stavanger Båtverksted AS | Manufacturing | 2014 |
| Stavanger Eiendomsbase AS | Real estate | 2019 |
| Stavanger Hudklinikk AS | Other services | 2024 |
| Stavanger Hus Og Hage AS | Administrative & support | 2017 |
| Stavanger Marine AS | Administrative & support | 2002 |
| Stavanger Maskin AS | Construction | 2017 |
| Stavanger Og Forus Invest AS | Real estate | 2017 |
| Stavanger Plast Og Lakk AS | Manufacturing | 2022 |
| Stavanger Rib AS | Arts & recreation | 2021 |
| Stavanger Rør Teknikk AS | Construction | 2023 |
| Stavanger Seilmaker AS | Manufacturing | 2018 |
| Stavanger Technologies AS | Information & communication | 2022 |
| Stavanger Travel AS | Information & communication | 2004 |
| Steiro Fix & Consulting AS | Construction | 2016 |
| Stiansti AS | | 2020 |
| Stig Bergsagel Holding AS | | 2023 |
| Stig Øie AS | Construction | 1992 |
| Stig Øie Bygg & Eiendom AS | Real estate | 2005 |
| Stiko Eiendom AS | Real estate | 2014 |
| Stinag Invest AS | Financial services | 2005 |
| Sting Capital AS | Real estate | 2018 |
| Sting Consulting AS | Professional & scientific | 2022 |
| Stjernedryss AS | Professional & scientific | 2020 |
| Stocc AS | Real estate | 2012 |
| Strøm-Helberg Eiendom AS | Real estate | 2024 |
| Strøm-Helberg Holding AS | Construction | 2021 |
| Sundegården AS | Wholesale & retail | 1982 |
| Suverent AS | Administrative & support | 2016 |
| Sveinung Lunde Prosjekt AS | Professional & scientific | 2023 |
| Sveta Invest AS | | 2021 |
| Sviv Holding AS | Financial services | 2017 |
| Sweet Music AS | Arts & recreation | 2007 |