| Roltos AS | Financial services | 2014 |
| Roma Verdi AS | Real estate | 2024 |
| Romico AS | Real estate | 2022 |
| Romuld AS | Financial services | 2010 |
| Ronor Invest AS | Financial services | 2018 |
| Rose Holding AS | Financial services | 2018 |
| Rosenmetoden Mette Finnebråten AS | Health & social care | 2021 |
| Rosima Invest AS | | 2020 |
| Rosnes Technologies AS | Professional & scientific | 2014 |
| Royal Events AS | Professional & scientific | 2025 |
| Royal Frisør 1 AS | Other services | 2026 |
| RR Eiendom AS | Real estate | 1976 |
| RR Invest Holding AS | Real estate | 2011 |
| RR Ventures AS | | 2025 |
| Rtad AS | Professional & scientific | 2026 |
| Runestad Elektro AS | Construction | 1978 |
| Rydlandholding AS | | 2022 |
| Rylo Invest AS | Real estate | 2012 |
| Røf AS | Real estate | 2021 |
| Rørlegger Sunde AS | Construction | 1997 |
| Rørlegger Sunde Avdeling Ryfylke AS | Construction | 2005 |
| Røyne's Turbuss AS | Transport & logistics | 2024 |
| S. Helland Holding AS | | 2025 |
| S. Sand Invest AS | | 2026 |
| S.H Holding AS | | 2020 |
| S.K.I Invest AS | | 2024 |
| S.L.H Auto AS | Wholesale & retail | 2023 |
| S.Y Transport AS | Transport & logistics | 2024 |
| Sabrura Madla AS | Hospitality | 2020 |
| Samqvist Capital AS | | 2020 |
| Sand Investering AS | Real estate | 2015 |
| Sand Investering I AS | | 2024 |
| Sand Investering III AS | | 2024 |
| Sand Studio AS | | 2024 |
| Sande LLC AS | Professional & scientific | 2008 |
| Sandgren & Co AS | Real estate | 1982 |
| Sandstone Forvaltning AS | | 2026 |
| Sandvik Holding AS | Professional & scientific | 2014 |
| Sassen Invest AS | Financial services | 2010 |
| Saxen Frisørsalong AS | Other services | 2010 |
| Scandic Holding AS | Wholesale & retail | 2005 |
| Scandinavian Retail Group AS | Wholesale & retail | 2015 |
| Scanlok AS | Wholesale & retail | 2015 |
| Scenefest AS | Arts & recreation | 2011 |
| SD Bike Ideelt AS | Other services | 2025 |
| SDS Group AS | Construction | 2026 |
| Seas AS | Professional & scientific | 1995 |
| Seato AS | Wholesale & retail | 2017 |
| Sedibus AS | Professional & scientific | 2019 |
| Seldom Eiendom AS | Real estate | 2020 |
| Selvåg Gartneri AS | Agriculture & fishing | 2005 |
| Selvåg Hage AS | Administrative & support | 2020 |
| Sembra AS | Professional & scientific | 2006 |
| Senslo AS | | 2016 |
| Sepa AS | | 2022 |
| Setterdahl AS | Professional & scientific | 2018 |
| Sev Studio AS | Other services | 2025 |
| Sezar AS | Other services | 2019 |
| Sezar Group AS | Other services | 2026 |
| Sheroshka AS | Real estate | 2013 |
| SHJ Kapital AS | Wholesale & retail | 2019 |
| Shore-Tec Consult AS | Professional & scientific | 2005 |
| Showakademiet AS | Education | 2021 |
| Shus AS | | 2021 |
| Siddis Eiendom AS | Real estate | 2004 |
| Sidro AS | Information & communication | 2026 |
| Siestas AS | Real estate | 2005 |
| Sigma Invest AS | Real estate | 1997 |
| Sigroco AS | Financial services | 2013 |
| Sikkert AS | Professional & scientific | 2016 |
| Silni AS | Real estate | 2026 |
| Silver Tree Norway AS | Administrative & support | 2016 |
| Simcode AS | Information & communication | 2025 |
| Simplex Holding AS | Professional & scientific | 2014 |
| Simplitix AS | Information & communication | 2017 |
| Simply Shop AS | Wholesale & retail | 2023 |
| Sinnes AS | Real estate | 2012 |
| Sirevaag Group AS | | 2026 |
| Sirevaag Travel AS | Administrative & support | 2026 |
| Sistaknit AS | Professional & scientific | 2019 |
| Sivi Investering AS | Health & social care | 2010 |
| Sixfigures Services AS | Professional & scientific | 2012 |
| Sixpack SA | Arts & recreation | 2014 |
| Sjl-Service AS | Administrative & support | 2020 |
| Sjø Og Land AS | Hospitality | 1986 |
| Skadsem Engineering AS | Professional & scientific | 1996 |
| Skarp Foto AS | Professional & scientific | 2018 |
| Skjelde Eiendom AS | Real estate | 2002 |
| Skjæveland AS | Real estate | 1987 |
| Skorpefjell AS | Real estate | 2017 |
| Skytek Holding AS | Professional & scientific | 2017 |
| Skytterbanen AS | Arts & recreation | 2013 |
| SM Industriservice AS | Administrative & support | 2013 |
| Smart Gjenbruk AS | Other services | 2026 |
| SMC Technology AS | Professional & scientific | 2024 |
| SMD Forvaltning AS | Wholesale & retail | 2023 |
| SMD Handel AS | Wholesale & retail | 2023 |
| SMD Investeringer AS | | 2024 |
| Smh-Holding AS | Hospitality | 2020 |
| Smith Eiendom AS | Real estate | 2021 |