| Refsahl Capital Invest AS | | 2025 |
| Regnskapsringen Soon AS | Professional & scientific | 1998 |
| Remma Invest AS | Hospitality | 2021 |
| Resultat Geo AS | Professional & scientific | 2017 |
| RGP AS | Real estate | 2006 |
| RH Tjenester AS | Financial services | 2015 |
| Rib Boats Norge AS | Wholesale & retail | 2010 |
| Rip Curl Invest AS | Real estate | 2012 |
| Riverfarm Holding AS | | 2019 |
| Roar Forfang AS | Real estate | 2005 |
| Roar Langli Holding AS | Financial services | 2009 |
| Robotics Gruppen AS | Wholesale & retail | 2021 |
| Robotics Norden AS | Wholesale & retail | 2024 |
| Rodegården AS | Real estate | 2014 |
| Rori Holding AS | Real estate | 2010 |
| RSG Betongpumping AS | Construction | 2024 |
| RSG Invest AS | Administrative & support | 2005 |
| Rutex AS | Professional & scientific | 2021 |
| Rve AS | Real estate | 2020 |
| Rygg Trefelling Da | Agriculture & fishing | 2024 |
| Rytter Industrigulve Mass Rytter | Construction | 2008 |
| Råsalt AS | Information & communication | 2013 |
| S&P Bygg AS | Construction | 2023 |
| S-R Gruppen AS | | 2023 |
| S-R Holding AS | Professional & scientific | 2023 |
| S.Carlsen Holding AS | Financial services | 2020 |
| S.I.D.O Holding AS | | 2021 |
| Saga Medisinske AS | Health & social care | 2023 |
| Saga Medisinske Holding AS | Real estate | 2023 |
| Sagaveien 114 Eiendom AS | Real estate | 2024 |
| Sagaveien 50 AS | Real estate | 2021 |
| Sagaveien Eiendom Son AS | Real estate | 2014 |
| Saksen Dame & Herrefrisør AS | Other services | 2020 |
| Salg Og Support AS | Wholesale & retail | 2024 |
| Sameiet Nordre Brevig AS | Real estate | 1995 |
| Sanfas Service AB | Administrative & support | 1998 |
| Sanomega AS | Wholesale & retail | 2014 |
| Sanomega E&E AS | Manufacturing | 2023 |
| Sav-Norge Trading Nuf | Wholesale & retail | 2004 |
| Savanna Metro AS | Wholesale & retail | 2015 |
| Scaleup Accelerator AS | Professional & scientific | 2019 |
| Scaleup Funding AS | | 2024 |
| Scandinavian Engineering & Construction Aps | Administrative & support | 2012 |
| Scanel Green Energy Norway AS | Wholesale & retail | 2005 |
| Sea-Sentinels (Norway) AS | Professional & scientific | 2023 |
| Second Female Norge AS | Wholesale & retail | 2015 |
| Select Flavour AS | Wholesale & retail | 1998 |
| Sensen Bolig AS | Real estate | 2023 |
| Sevini AS | Wholesale & retail | 2017 |
| Sevja AS | Information & communication | 2021 |
| SGL Coach AS | Information & communication | 2026 |
| Sigpack AS | Wholesale & retail | 2023 |
| Sigyn Holding AS | | 2022 |
| Silc Atelier AS | Professional & scientific | 2026 |
| Sindico Group Norway AS | Wholesale & retail | 2018 |
| Siri K Lab AS | Arts & recreation | 2024 |
| Siv Ing Fred O Halvorsen AS | Administrative & support | 2002 |
| Sjolund Holding AS | | 2020 |
| SK Holdco AS | Professional & scientific | 2026 |
| Skilt Invest AS | Real estate | 1992 |
| Skjærgård AS | Professional & scientific | 1993 |
| Skolevisjoner AS | Information & communication | 2013 |
| Skredder Frisør AS | Other services | 2015 |
| Skurvåsveien Vann Og Avløpslag SA | Water & waste | 2009 |
| Sletta Drift AS | Wholesale & retail | 2005 |
| Sletta Drift Eiendom AS | Wholesale & retail | 2009 |
| Slettaveien 17 AS | Real estate | 2026 |
| Slettaveien 18 AS | Real estate | 2017 |
| Slettaveien 19 AS | Real estate | 2026 |
| Slettaveien 8 AS | Real estate | 2021 |
| Slopetrotters Aps | Administrative & support | 2011 |
| Smedsrud Terrasse AS | Real estate | 2017 |
| Snerta AS | | 2023 |
| Solcon AS | Professional & scientific | 2025 |
| Sole Skog Eiendom AS | Real estate | 2012 |
| Soleco AS | Professional & scientific | 2025 |
| Solhøy Drift AS | Hospitality | 2023 |
| Sollie Development AS | Manufacturing | 2016 |
| Solåsen Fus Barnehage AS | Education | 2018 |
| Son Apoteklab AS | Manufacturing | 2015 |
| Son Begravelsesbyrå AS | Other services | 2025 |
| Son Biprodukter AS | Agriculture & fishing | 2020 |
| Son Brygge Eiendom AS | Real estate | 2016 |
| Son Bryggerhus Drift AS | Hospitality | 2016 |
| Son Bygg AS | Construction | 2021 |
| Son Bygg Og Vedlikehold AS | Construction | 2023 |
| Son Drift AS | Hospitality | 2020 |
| Son Eiendom AS | Real estate | 2004 |
| Son Elektro AS | Construction | 1995 |
| Son Entreprenør AS | Real estate | 2000 |
| Son Fysikalske AS | Health & social care | 2023 |
| Son Holding AS | Wholesale & retail | 2005 |
| Son Hub AS | Real estate | 2022 |
| Son Kapital AS | Real estate | 2021 |
| Son Kro AS | Hospitality | 2014 |
| Son Legekontor Rodegården AS | Health & social care | 2019 |
| Son Optikk AS | Wholesale & retail | 2007 |
| Son Plast AS | Manufacturing | 2024 |
| Son Regnskap AS | Professional & scientific | 2023 |
| Son Revisjon AS | Professional & scientific | 2023 |