| Steinbru Photography AS | Professional & scientific | 2019 |
| Steingrim Gevinst AS | | 2025 |
| Steinhandel AS | Wholesale & retail | 2007 |
| Steinkargata 22 AS | Real estate | 2022 |
| Steinkargata 4 AS | Real estate | 2016 |
| Steinkargt 24 AS | Real estate | 2012 |
| Steinnes-Vvs AS | Construction | 2010 |
| Steinsøy Communications AS | | 2026 |
| Steinsøy Holding AS | | 2026 |
| Steinsøy Invest AS | Financial services | 2005 |
| Steira Prosjekt AS | Professional & scientific | 2026 |
| Stella Nail & Spa AS | Other services | 2023 |
| Stellaire Infrastructure AS | Information & communication | 2025 |
| Stellar Holding AS | Information & communication | 2019 |
| Stels AS | Real estate | 2004 |
| Stenersen Kjell AS | | 2006 |
| Stensland Mat AS | Wholesale & retail | 2025 |
| Step Change AS | Real estate | 2005 |
| Steps Dansestudio AS | Education | 2024 |
| Steps Holding AS | Education | 2024 |
| Stepwise AS | Information & communication | 2021 |
| Stevenson Holding AS | | 2024 |
| Stewardship Holding AS | Professional & scientific | 2010 |
| Stewart & Stevenson Ltd | Mining & quarrying | 1998 |
| STH Consulting AS | Professional & scientific | 2015 |
| Stian Holding AS | Construction | 2017 |
| Stifi AS | Wholesale & retail | 2006 |
| Stiftelsen Islamsk Opplæring Og Kulturhus | Real estate | 2013 |
| Stig Feyling Consulting AS | Professional & scientific | 2010 |
| Stig Frøland Transport AS | Transport & logistics | 2011 |
| Stig Ness Management AS | Professional & scientific | 2012 |
| Stija 2 AS | Professional & scientific | 2012 |
| Stikon Investering AS | Financial services | 2007 |
| Stilken Og Strøm AS | Wholesale & retail | 2017 |
| Stillas Teknikk Ans | Administrative & support | 1994 |
| Stilleben Studio AS | Professional & scientific | 2019 |
| Stillwater AS | Transport & logistics | 2015 |
| Stimulator AS | | 2020 |
| Stinger Technology AS | Professional & scientific | 2003 |
| Stingray AS | | 1999 |
| Stitch AS | Information & communication | 2026 |
| Stjernebakken AS | Real estate | 1947 |
| Stocka AS | | 2019 |
| Stokka Bilsenter & Investering AS | Wholesale & retail | 1981 |
| Stokka Forlag AS | Information & communication | 2015 |
| Stokka Fysioterapi Og Mensendieck Da | Health & social care | 2016 |
| Stokka Legesenter Da | Health & social care | 1992 |
| Stokka Åpen Barnehage AS | Education | 2023 |
| Stokkadalen Invest AS | | 2023 |
| Stokkahagen AS | Professional & scientific | 2014 |
| Stokkaveien 42 AS | Real estate | 1998 |
| Stokkaveien Blomster AS | Wholesale & retail | 1999 |
| Stokkeland & Scott AS | | 2022 |
| Stokkenes Power AS | | 2018 |
| Stolen AS | Real estate | 2017 |
| Stolt Kapitalforvaltning AS | Financial services | 2012 |
| Stolt Vekstkapital AS | | 2025 |
| Stolt-Nilsen Philippines Inc | Administrative & support | 2008 |
| Stonefish AS | Real estate | 2016 |
| Stor-Y AS | Information & communication | 2023 |
| Storasundet Vann- Og Avløpslag SA | Water & waste | 2019 |
| Stordahl Invest AS | | 2021 |
| Store Blå Invest AS | Financial services | 2017 |
| Storebrand Knud Holms Gate 8 AS | Real estate | 2015 |
| Storemyra Holding AS | Manufacturing | 2015 |
| Storesund Engineering AS | Professional & scientific | 1997 |
| Storfonna Invest AS | | 2019 |
| Storgata 27B AS | Real estate | 1989 |
| Storgata 38 Bryne AS | Real estate | 2000 |
| Storgata 40 Bryne AS | Real estate | 2025 |
| Storgorg AS | Professional & scientific | 2014 |
| Storhaug Bolig AS | Real estate | 2013 |
| Storhaug Capital AS | | 2022 |
| Storhaug Dyreklinikk AS | Professional & scientific | 2023 |
| Storhaug Elektroinstallasjon AS | Construction | 2023 |
| Storhaug Legesenter Da | Health & social care | 2004 |
| Storhaug Pizza AS | Hospitality | 2002 |
| Storhaug Tannlegesenter AS | Health & social care | 2023 |
| Storhaug Treningssenter AS | Arts & recreation | 2008 |
| Storhaug-Bilpleie AS | Other services | 2013 |
| Storhaugmarka AS | Professional & scientific | 2022 |
| Storhaugveien 15 AS | Real estate | 2025 |
| Stormen Eiendom AS | Real estate | 2026 |
| Stormsaga AS | Information & communication | 2025 |
| Storpartner Holding AS | Wholesale & retail | 2017 |
| Storship AS | Transport & logistics | 2018 |
| Storymaker AS | Information & communication | 2023 |
| STP AS | Administrative & support | 2023 |
| Straen Eiendom AS | Real estate | 1994 |
| Straen Eiendom Holding AS | Real estate | 2017 |
| Straen Energy AS | Professional & scientific | 2017 |
| Straen Equity AS | Financial services | 2007 |
| Straen Handel AS | Wholesale & retail | 2009 |
| Straen Investering AS | Real estate | 1998 |
| Straen JV AS | Real estate | 2022 |
| Straen Mat & Catering AS | Hospitality | 2006 |
| Straen NO70 AS | Manufacturing | 2023 |
| Straen Optiske AS | Wholesale & retail | 2006 |
| Straen Vin & Rabalder AS | Wholesale & retail | 1999 |
| Strai Kjøkken Stavanger AS | Wholesale & retail | 2001 |