| Rådhusvegen 28 AS | Real estate | 2006 |
| Rør Og Gassteknikk AS | Construction | 2023 |
| Rørlegger Johannesen AS | Construction | 2025 |
| S&F Invest AS | | 2025 |
| Saem Spa | Construction | 2013 |
| Saga Caves AS | Real estate | 2019 |
| Saga Noor AS | Real estate | 2019 |
| Salba AS | Professional & scientific | 2023 |
| Salba Invest AS | Professional & scientific | 2023 |
| Samfrost Holding AS | Construction | 2020 |
| Sande Gård AS | Wholesale & retail | 1994 |
| Sande Gård Eiendom AS | Real estate | 2017 |
| Sande Gård Energi AS | Wholesale & retail | 2012 |
| Sandeslettå I AS | Real estate | 2007 |
| Sandeslettå II AS | Wholesale & retail | 2007 |
| Sandface AS | Professional & scientific | 1996 |
| Sanke AS | | 2025 |
| Sanso AS | | 2005 |
| Sassas AS | Professional & scientific | 2018 |
| Saudagaten 2 AS | Real estate | 2006 |
| Scale Up Partner AS | Professional & scientific | 2025 |
| Scandic IT Recycle AS | Information & communication | 2024 |
| Scandic IT Service AS | Information & communication | 2025 |
| Scandictech AS | Wholesale & retail | 2026 |
| Scandinavian Drone Company AS | Professional & scientific | 2026 |
| Scandinavian Simulation & Training Company AS | Education | 2026 |
| Scandinavian Transport Brokers AS | Transport & logistics | 1992 |
| Scene AS | Administrative & support | 2017 |
| Score Innovation AS | Professional & scientific | 2017 |
| Screencancer AS | Health & social care | 2009 |
| Sefland Invest AS | Financial services | 2008 |
| Seismic Partner AS | Professional & scientific | 2023 |
| Sek Holding AS | | 2022 |
| Selskapsreiser AS | Real estate | 2011 |
| Senab Eikeland Gruppen AS | Wholesale & retail | 2015 |
| Senab Eikeland Stavanger AS | Wholesale & retail | 1951 |
| Senthai AS | Hospitality | 2016 |
| Seppola Invest AS | | 2024 |
| Ses Elektro AS | Construction | 2020 |
| Ses Energy AS | Administrative & support | 1984 |
| Set Consult AS | | 2020 |
| Siem Holding AS | Wholesale & retail | 2005 |
| Siem Party AS | Wholesale & retail | 2021 |
| Siem Party Haugesund AS | Wholesale & retail | 2023 |
| Siem Party Lura AS | Wholesale & retail | 2021 |
| Sifo AS | Administrative & support | 2022 |
| Sigmund Lothe AS | Construction | 1986 |
| Silver Fox AS | Information & communication | 2024 |
| Sime AS | Professional & scientific | 2014 |
| Simulatorgolf Stavanger AS | Administrative & support | 2021 |
| Singel & Grus AS | Mining & quarrying | 2026 |
| Singel & Grus Terminal AS | Mining & quarrying | 2026 |
| Sjaf AS | Professional & scientific | 2016 |
| Skadberg Allè 55 AS | Real estate | 2014 |
| Skadberg Barnehage SA | Education | 2005 |
| Skadberg Dagligvare AS | Wholesale & retail | 2004 |
| Skagen Eiendomsforvaltning AS | Real estate | 2013 |
| Skagenkaien 1 AS | Real estate | 2003 |
| Skatten Min AS | Financial services | 2005 |
| Skibmannskvartalet AS | Real estate | 2008 |
| Skiftesvik AS | Real estate | 2013 |
| Skjøtskift Holding AS | | 2025 |
| Skogateigen 28 AS | Real estate | 2010 |
| Skvadronvegen 18 AS | Real estate | 2005 |
| Skvadronveien 12 AS | Real estate | 2006 |
| Skvadronveien 24 AS | Real estate | 2008 |
| Skvadronveien 27 AS | Real estate | 2010 |
| Skvadronveien Eiendom AS | Real estate | 1979 |
| Skøytebutikken AS | Wholesale & retail | 2014 |
| Slashbits AS | | 2022 |
| Slavarium AS | Professional & scientific | 2015 |
| Slettestrandveien 19 AS | Real estate | 2023 |
| Sli Holding AS | Real estate | 2014 |
| Smarte Apper AS | Information & communication | 2014 |
| Smarte Energi Systemer Norge AS | Construction | 2013 |
| Smørdalsmyrå AS | Real estate | 2006 |
| Smørdalsmyrå Vest AS | Real estate | 2006 |
| So Stavanger AS | Wholesale & retail | 2014 |
| Sokath Holding AS | | 2017 |
| Sola Apotek AS | Wholesale & retail | 2010 |
| Sola Auto AS | Other services | 2010 |
| Sola Barnehage SA | Education | 1988 |
| Sola Bil Da | Wholesale & retail | 2007 |
| Sola Bistro AS | Hospitality | 2019 |
| Sola Bredbånd AS | Information & communication | 2003 |
| Sola Bygg AS | Construction | 2009 |
| Sola Bygg Prosjekt II AS | | 2026 |
| Sola Byggtjenester AS | Construction | 2020 |
| Sola Dyreklinikk AS | Professional & scientific | 2021 |
| Sola Eiendom AS | Real estate | 2006 |
| Sola Eiendomsmegling AS | Real estate | 2024 |
| Sola Elektro AS | Construction | 2020 |
| Sola Legesenter AS | Health & social care | 2018 |
| Sola Medisinske Senter AS | Health & social care | 2023 |
| Sola Minilager AS | Real estate | 2025 |
| Sola Pizza AS | Hospitality | 2004 |
| Sola Proshop AS | Wholesale & retail | 2011 |
| Sola Regnskap SA | Professional & scientific | 1954 |
| Sola Rør AS | Construction | 2024 |
| Sola Sport & Fritid AS | Wholesale & retail | 2015 |