| Stahl Holding AS | | 2026 |
| Staking Invest AS | | 2024 |
| Stall HT Da | Education | 2007 |
| Stall Myrane AS | Arts & recreation | 2005 |
| Stallis Holding AS | Hospitality | 2012 |
| Stamina International AS | Real estate | 2005 |
| Stansa Utbygging AS | Real estate | 2023 |
| Star United AS | Wholesale & retail | 2005 |
| Stardalen Kraft AS | Energy | 2010 |
| Stargazer Studios AS | Information & communication | 2024 |
| Stasjonshaven Barnehage SA | Education | 1993 |
| Statera AS | Health & social care | 2011 |
| Stationmar AS | Administrative & support | 2018 |
| Stavanger Sportscafe AS | Hospitality | 2019 |
| Stave Transport AS | Transport & logistics | 2017 |
| Stavendal AS | Wholesale & retail | 2013 |
| Stavik Holding AS | | 2021 |
| Stay-Alive AS | Information & communication | 2015 |
| STB Group AS | Real estate | 2005 |
| Steal Invest AS | | 2022 |
| Stedet Velvære AS | Real estate | 2019 |
| Steelmaster AS | Wholesale & retail | 2025 |
| Steelmaster Eiendom AS | Real estate | 2025 |
| Steelmaster Holding AS | | 2024 |
| Stefan Hoffmann | Manufacturing | 2001 |
| Steffensen Holding AS | Hospitality | 2005 |
| Stein Eiendom Invest AS | Real estate | 2023 |
| Stein Ivar Ludvigsen Transport AS | Transport & logistics | 1998 |
| Stein På Stein 1905 AS | Arts & recreation | 2024 |
| Steinar Kjær Transport AS | Transport & logistics | 1997 |
| Steindalen 14 AS | Real estate | 2021 |
| Steindalen 2 AS | Real estate | 2008 |
| Steinkleiva 6 AS | Real estate | 1997 |
| Steinmannen AS | Wholesale & retail | 2016 |
| Steinsheia Sol- Og Batteripark AS | Energy | 2025 |
| Steinsto Holding AS | Education | 2022 |
| Stella Development AS | Education | 2012 |
| Stellai AS | Professional & scientific | 2020 |
| Stemmane 1 AS | Real estate | 2010 |
| Stemmane 13 Eiendom AS | Real estate | 2009 |
| Stemmane 20A AS | Real estate | 2021 |
| Stemmane 22D AS | Real estate | 2021 |
| Stemmane 24 B AS | Real estate | 2022 |
| Stemmane 25 a AS | Real estate | 2011 |
| Stemmane 29 AS | Real estate | 2013 |
| Stemmane 4 AS | Real estate | 2008 |
| Stemmane 4A AS | Real estate | 2023 |
| Stemmane 6 AS | Real estate | 1997 |
| Stemmane 9 Eiendom AS | Real estate | 2007 |
| Stener Dvergsnes & Co AS | Manufacturing | 1999 |
| Stensland Eiendom AS | Real estate | 1996 |
| Stensrudveien 14 AS | Real estate | 2022 |
| Stepbystep AS | Health & social care | 2025 |
| Stepchange AS | Professional & scientific | 1987 |
| Sterion Technologies AS | Professional & scientific | 2026 |
| Sterkt Design AS | Information & communication | 2014 |
| Sterling Auto AS | Wholesale & retail | 2026 |
| Stho Invest AS | | 2023 |
| Stige Invest AS | | 2020 |
| Stillasbutikken AS | Wholesale & retail | 2018 |
| Stillasfag AS | Construction | 2016 |
| Stillasproff AS | Construction | 2020 |
| Stimen Invest AS | | 2026 |
| Stimline AS | Information & communication | 2010 |
| Stimline Well Intervention Systems AS | Information & communication | 2023 |
| Stinger Consulting AS | Professional & scientific | 2024 |
| Stisk AS | | 2005 |
| Stiton Holding AS | Real estate | 2014 |
| Stjerne Eiendom AS | Real estate | 2011 |
| Stjernehav AS | Wholesale & retail | 2021 |
| STM Invest AS | Real estate | 2021 |
| Stoa 192 AS | Real estate | 2014 |
| Stoa 234 AS | Real estate | 2014 |
| Stoa Utvikling AS | Real estate | 2019 |
| Stoasenteret AS | Real estate | 1998 |
| Stoaveien 14 AS | Real estate | 2014 |
| Stoaveien 2 AS | Real estate | 2006 |
| Stoffdronning AS | Wholesale & retail | 2014 |
| Stokkeland Taxi Eiendom AS | Real estate | 2023 |
| Stokkenes AS | | 2025 |
| Stokksund Fiskeri AS | Agriculture & fishing | 2021 |
| Stomnås AS | Wholesale & retail | 2016 |
| Stonedinavia AS | Wholesale & retail | 2016 |
| Stoneland AS | | 2024 |
| Stoneman Invest AS | | 2022 |
| Storaas Invest AS | Professional & scientific | 2010 |
| Storang AS | Professional & scientific | 2020 |
| Storang Holding AS | Professional & scientific | 2020 |
| Store Peders Mad & Viinstue Ans | Hospitality | 1996 |
| Storform AS | Professional & scientific | 2006 |
| Storform Eiendom AS | Real estate | 2018 |
| Storgata 134 AS | Real estate | 2012 |
| Storgaten 165 AS | Real estate | 2022 |
| Storkiosk 5084 Høigilt Søfting Ans | Wholesale & retail | 2003 |
| Stormberg AS | Wholesale & retail | 2005 |
| Stormberg Holding AS | Wholesale & retail | 2023 |
| Stormberg Sverige AB | | 2016 |
| Stort & Smaatt Ans | Wholesale & retail | 2005 |
| Stortorgnes Fritidshytter AS | Real estate | 2023 |
| Stortorgnes Fritidsopplevelser AS | Administrative & support | 2023 |