| Quizzer AS | Information & communication | 2012 |
| R Isachsen AS | | 2026 |
| R&U Holding AS | Wholesale & retail | 2014 |
| Ra Rørleggerservice AS | Construction | 2019 |
| Raag AS | | 2026 |
| Radsoft AS | Information & communication | 1994 |
| Raimund AS | | 2025 |
| Rainals Aune AS | Real estate | 1988 |
| Rainals Aune Forvaltning AS | Real estate | 1992 |
| Ram AS | | 2019 |
| Ram-Bulk AS | Transport & logistics | 1990 |
| Rama Eiendom AS | Real estate | 2011 |
| Rammemesteren Sandefjord AS | Manufacturing | 2017 |
| Rams AS | Real estate | 1998 |
| Ramse Maskin AS | Administrative & support | 2019 |
| Ranvik Holding AS | | 2023 |
| Ranvikeiendommen AS | Real estate | 2020 |
| Ranvikskogen Eiendom AS | Real estate | 2000 |
| Rapid Data AS | Information & communication | 2023 |
| Rask Invest AS | | 2012 |
| Rasmus Holding AS | | 2025 |
| Rastad AS | Real estate | 2015 |
| Rastlaus Media AS | Information & communication | 2018 |
| Rav Eie AS | Agriculture & fishing | 2021 |
| Raveien 138 AS | Real estate | 2022 |
| Raveien 140A AS | Real estate | 1988 |
| Raveien 237 AS | Real estate | 2012 |
| Raveien 422 AS | Real estate | 2005 |
| Raveien Eiendom AS | Wholesale & retail | 2014 |
| Raymond Kristoffersen AS | Professional & scientific | 2013 |
| Rays Holding AS | Arts & recreation | 2020 |
| Raytech AS | | 2025 |
| RB Bygg Og Renhold AS | Construction | 2020 |
| RB Kapital AS | | 2024 |
| RC Invest AS | Financial services | 2011 |
| Readysoft AS | Information & communication | 2020 |
| Reborn AS | Professional & scientific | 2012 |
| Recycling Lottery International AS | Arts & recreation | 2019 |
| Red Group Travel Solutions AS | Administrative & support | 2016 |
| Red Horizon AS | Information & communication | 2023 |
| Redflight Aviation AS | Education | 2017 |
| Ree Transport AS | Transport & logistics | 2017 |
| Reef Holding AS | Financial services | 2016 |
| Refine AS | Health & social care | 2020 |
| Reginelovinda AS | Wholesale & retail | 2022 |
| Regnskap & Rådgivning AS | Professional & scientific | 2016 |
| Regnskap Pluss AS | Real estate | 2003 |
| Regnskapsundervisning AS | Professional & scientific | 2020 |
| Regroup AS | Professional & scientific | 2017 |
| Rehab International AS | Health & social care | 2017 |
| Reimert AS | Financial services | 1993 |
| Reina Holding AS | Real estate | 2015 |
| Reiselivskunnskap AS | Professional & scientific | 2015 |
| Reistveit Holding AS | Administrative & support | 2007 |
| Reitmann Holding AS | | 2025 |
| Reklameservice Vestfold-Telemark AS | Professional & scientific | 1994 |
| Rekord Rens AS | Other services | 2007 |
| Release Holding AS | Wholesale & retail | 2024 |
| Reloop Systems AS | Professional & scientific | 2023 |
| Remote Caddie AS | Wholesale & retail | 2023 |
| Renaq AS | Agriculture & fishing | 2019 |
| Renhold Edita AS | Administrative & support | 2019 |
| Renoma AS | Information & communication | 2016 |
| Reprice AS | Information & communication | 2020 |
| Restaurant Sydvesten AS | Hospitality | 2023 |
| Resultatbygg AS | Construction | 2016 |
| Retro Bil AS | Other services | 2025 |
| Retro Norge AS | Wholesale & retail | 2005 |
| Retromessa Hub AS | Education | 2025 |
| Revenuity AS | Professional & scientific | 2024 |
| Revfem Energi AS | Construction | 2023 |
| RH Invest Sandefjord AS | | 2018 |
| Rhe Steen Eiendom AS | Real estate | 2024 |
| RHK - Holding AS | | 2024 |
| Rho Consult AS | Professional & scientific | 2015 |
| Rialto AS | Professional & scientific | 2005 |
| Rico Eiendom AS | Real estate | 1982 |
| Rico Mat AS | | 1991 |
| Rimo Invest AS | Real estate | 2013 |
| Rina Norway AS | Professional & scientific | 2008 |
| Ring Olav AS | Construction | 2024 |
| Ringdal Bil & Motorservice AS | Other services | 2020 |
| Ringveien 204 -149/464 AS | Real estate | 2022 |
| Ringveien 206 AS | Real estate | 2003 |
| Riverplace AS | | 2025 |
| Riviera Pizza AS | Hospitality | 2025 |
| RJ Utvikling AS | Real estate | 2020 |
| RJK Invest AS | | 2007 |
| RK Hårstudio AS | Other services | 2018 |
| Rk-Bygg Og Tjenester AS | Construction | 2023 |
| RL Eiendom AS | Real estate | 2018 |
| RMP AS | Professional & scientific | 2014 |
| Roars Auto AS | Other services | 2024 |
| Roberg Investering AS | | 2020 |
| Roe - Holding AS | Financial services | 1995 |
| Roin Eiendom AS | Real estate | 1990 |
| Roin Holding AS | Real estate | 2005 |
| Romakonsult AS | Professional & scientific | 2023 |
| Romisert AS | Professional & scientific | 2025 |
| Room AS | Wholesale & retail | 2017 |