| Reps AS | Wholesale & retail | 2022 |
| Repsac Invest AS | | 2026 |
| Repsol Exploración Inversiones, S.L.U. Nuf | Professional & scientific | 2026 |
| Repsol Norge AS | Mining & quarrying | 2009 |
| Repsol Perpetual Norge AS | Mining & quarrying | 2002 |
| Resani AS | Professional & scientific | 2014 |
| Rescap AS | | 2024 |
| Rescuetech Ans | Wholesale & retail | 1988 |
| Resepsjon M24-26 AS | Administrative & support | 2012 |
| Resept AS | Hospitality | 2001 |
| Reservoir AS | Professional & scientific | 2014 |
| Resource Management AS | Real estate | 1998 |
| Resources AS | Administrative & support | 2019 |
| Respiro Acer AS | | 2022 |
| Restaurant Bevaremegvel AS | Hospitality | 1995 |
| Restaurant Broken AS | Hospitality | 2023 |
| Restaurant Mexico AS | Hospitality | 2019 |
| Restaurant Vår AS | Hospitality | 2024 |
| Restaurant-Invest AS | Hospitality | 1985 |
| Retail Office Stavanger AS | Real estate | 2014 |
| Retail Stavanger AS | Real estate | 2025 |
| Retailbox AS | Wholesale & retail | 2019 |
| Retain AS | Health & social care | 2005 |
| Rett Bad AS | Construction | 2018 |
| Rett Byggetjenester AS | Construction | 2021 |
| Rett På Jernet AS | Financial services | 2011 |
| Rettedal Skjæveland Holding AS | | 2026 |
| Reuben Davis Holding AS | | 2026 |
| Reutz Consulting AS | Mining & quarrying | 2014 |
| Reven Holding AS | | 2025 |
| Revheim Eiendom AS | Real estate | 2004 |
| Review AS | Professional & scientific | 2014 |
| Revilo AS | Health & social care | 2011 |
| Revinvest AS | Real estate | 2021 |
| Revisjon 1 AS | Professional & scientific | 2005 |
| Revisjon Vest AS | Professional & scientific | 2000 |
| Revpet Invest AS | | 2023 |
| Rezai Holding AS | | 2021 |
| Rfid Solutions AS | Information & communication | 2015 |
| RG Engineering AS | Professional & scientific | 2017 |
| Rhinoceros AS | | 2026 |
| Rhinorat Recordings AS | Information & communication | 2018 |
| Rhodes AS | Hospitality | 2026 |
| RHW Eiendom AS | Real estate | 2008 |
| Rhysgar AS | Professional & scientific | 2019 |
| Ri Hermes Holding 1 AS | | 2023 |
| Ri-An AS | | 2021 |
| Rib Adventure Stavanger AS | Transport & logistics | 2024 |
| Richard Berge Holding AS | Financial services | 2016 |
| Richard Muri AS | Professional & scientific | 2013 |
| Ricon AS | Wholesale & retail | 1991 |
| Ridge Holding AS | Professional & scientific | 2018 |
| Ridwan AS | Administrative & support | 2021 |
| Rief AS | Information & communication | 2006 |
| Rift Band SA | Arts & recreation | 2018 |
| Rift Holding AS | | 2025 |
| Rift Management AS | Professional & scientific | 2025 |
| Rig Supply AS | Wholesale & retail | 1996 |
| Rig Support Group AS | Professional & scientific | 2017 |
| Right Property AS | Real estate | 2013 |
| Right Skills AS | Administrative & support | 2012 |
| Rignet AS | Information & communication | 2012 |
| Rigor Mortis Holding AS | Information & communication | 2016 |
| Rij Invest AS | | 2024 |
| Riku Eiendom AS | Real estate | 2014 |
| Rimtussa AS | | 2023 |
| Ringvegen 225 AS | Real estate | 2020 |
| Riri Gruppen Norge AS | Wholesale & retail | 2016 |
| Ris Eiendommer AS | Real estate | 2021 |
| Ris Service AS | Manufacturing | 1997 |
| Risavika Eiendom AS | Real estate | 2002 |
| Risavika Havnering 224 AS | Real estate | 2008 |
| Risavika Havnering Holding AS | | 2025 |
| Riseth Invest AS | Professional & scientific | 2011 |
| Rising Star Eiendom AS | Real estate | 2026 |
| Rising Star Products AS | Professional & scientific | 2004 |
| Risk Holding AS | Financial services | 2015 |
| Risk Management Pro AS | Professional & scientific | 2007 |
| Riskas AS | Professional & scientific | 2025 |
| Ristorante Allegro AS | Hospitality | 2014 |
| Risøy Heyerdahl AS | | 2021 |
| Ritz Investering AS | Real estate | 2005 |
| Rivium Solutions AS | Professional & scientific | 2025 |
| Rjwb Holding AS | | 2020 |
| RK Tekniske AS | Construction | 2007 |
| RKL AS | Professional & scientific | 2025 |
| Rkolnes Invest AS | | 2026 |
| RKS Invest AS | Financial services | 2010 |
| RM Supply Services AS | Wholesale & retail | 2015 |
| RMB Maler AS | Construction | 2021 |
| RMC AS | Real estate | 2012 |
| RMC Holding AS | Real estate | 2012 |
| RMC Holding II AS | | 2025 |
| Rmjk AS | Hospitality | 2017 |
| RN Service Og Vedlikehold AS | Construction | 2020 |
| Roalsø AS | Manufacturing | 2013 |
| Roalsø Invest AS | Financial services | 2005 |
| Roarno Holding AS | | 2025 |
| Robert & Rufus AS | Real estate | 2022 |
| Robert Ewald Development AS | | 2013 |