| Rigedalen 45D AS | Construction | 2006 |
| Rigedalen 46 AS | Wholesale & retail | 2006 |
| Rigedalen 46 Eiendom AS | Wholesale & retail | 2008 |
| Rigedalen 46 Invest AS | Wholesale & retail | 2021 |
| Rigedalen 49 AS | Real estate | 2018 |
| Rigedalen 50 AS | Real estate | 2024 |
| Rigedalen 52 AS | Wholesale & retail | 2012 |
| Rigedalen AS | Real estate | 2020 |
| Rigetjønn Bil AS | Wholesale & retail | 2014 |
| Rigetjønnveien 10 AS | Real estate | 2011 |
| Rigetjønnveien 12 Seksjon 7 AS | Real estate | 2023 |
| Rigetjønnveien 12A AS | Real estate | 2023 |
| Rigetjønnveien 16 AS | Real estate | 1998 |
| Rigetjønnveien 18 AS | Real estate | 2025 |
| Rigetjønnveien 2 AS | Construction | 2018 |
| Rigetjønnveien 8 AS | Real estate | 2021 |
| Rigg Sør AS | Arts & recreation | 2015 |
| Riggpartneren AS | Construction | 2019 |
| Rihal Eiendom AS | Real estate | 2024 |
| Rike Kapital AS | Professional & scientific | 2020 |
| Ring Eiendom AS | Real estate | 1974 |
| Ringereide Holding AS | | 2025 |
| Ringknuten Pukkverk AS | Mining & quarrying | 1999 |
| Ringlebekk Terrasse AS | Real estate | 2024 |
| Ringoeen AS | Real estate | 2024 |
| Ringskjær Ans | Agriculture & fishing | 2011 |
| Ringskjær AS | Agriculture & fishing | 2025 |
| Ringøen AS | Real estate | 2012 |
| Ripple Aerospace AS | Manufacturing | 2016 |
| Riquelme AS | Professional & scientific | 2025 |
| Risdal Energi AS | Energy | 2004 |
| Risdalslia AS | Professional & scientific | 2026 |
| Rise Above AS | Arts & recreation | 2021 |
| Ritbet Useugi Remontowo- Budowlane Janiszewski Rafal | Construction | 2015 |
| Rivergate Holding AS | Information & communication | 2021 |
| Riviera Asset Management AS | Financial services | 2006 |
| RLR Eiendom AS | Real estate | 2013 |
| RMB Trafikkskole AS | Education | 2020 |
| Rn-Invest AS | Real estate | 2005 |
| Rnjærheim Holding AS | | 2021 |
| Roald Isefjær AS | Transport & logistics | 2018 |
| Roar Berge Holding AS | | 2022 |
| Robert Ugland Holding AS | Real estate | 2014 |
| Robertsen Marine Interior AS | Construction | 2026 |
| Robvest Holding AS | | 2025 |
| Rockling AS | Professional & scientific | 1993 |
| Rodenes Ungdoms Og Aktivitetshjem Ans | Health & social care | 1997 |
| Rognelia Familiebarnehage Ans | Education | 1994 |
| Rohde Invest AS | | 2017 |
| Roland Regnskap AS | Professional & scientific | 1998 |
| Rolands AS | Manufacturing | 1976 |
| Rolands Bygg AS | Construction | 2011 |
| Rolf Gupta AS | Arts & recreation | 2007 |
| Rolf H Hansen AS | Construction | 2003 |
| Rolf Stumpfs Gravsted AS | Real estate | 2013 |
| Rolfs Elektro AS | Wholesale & retail | 1987 |
| Roligheden Ferieleiligheter AS | Real estate | 2013 |
| Roligheden Panorama AS | Real estate | 2022 |
| Rolighei AS | | 2021 |
| Romeveien 6 AS | Real estate | 2005 |
| Romnes Kristiansand AS | Wholesale & retail | 2006 |
| Rona Eiendom AS | Real estate | 2015 |
| Rona Fysioterapi Og Trening AS | Health & social care | 2021 |
| Rona Helse AS | Real estate | 2020 |
| Rona Pizza AS | Hospitality | 2006 |
| Rona Senter AS | Real estate | 1997 |
| Rona Torv AS | Real estate | 2012 |
| Ronmic Holding AS | | 2019 |
| Ropstad Invest AS | Real estate | 2018 |
| Rosa Velvære AS | Other services | 2023 |
| Rosario Holding AS | Information & communication | 2021 |
| Rosseland Margareth/ Karin Snedal Ans | Agriculture & fishing | 2012 |
| Rosten-Consulting AS | Professional & scientific | 2016 |
| Rostø Invest AS | | 2021 |
| Roto AS | Wholesale & retail | 1997 |
| Roto Drill AS | Wholesale & retail | 2015 |
| Rotor Aqua AS | Manufacturing | 2025 |
| Rotor Newco Holding AS | | 2026 |
| Rotor Systems AS | Professional & scientific | 2022 |
| Rotor Tools AS | Administrative & support | 2020 |
| Rovaro Pizza & Grill AS | Hospitality | 2025 |
| Roy Agenturer AS | Wholesale & retail | 2015 |
| Roy Jørgensen Holding AS | | 2005 |
| Royal Angkor AS | Hospitality | 2020 |
| Royal Investment AS | Real estate | 2015 |
| Royal Motor AS | Wholesale & retail | 2018 |
| Royal Sushi AS | Hospitality | 2013 |
| Royal Sushi Vågsbygd AS | Hospitality | 2017 |
| Roys Webdesign Limited Nuf | Information & communication | 2010 |
| RRH Eiendom AS | Real estate | 2020 |
| RRR Invest AS | | 2026 |
| RS Group AS | Wholesale & retail | 2019 |
| RSG Systems AS | Information & communication | 2026 |
| RSK Invest AS | Professional & scientific | 2017 |
| RSM Imagineering AS | Professional & scientific | 2014 |
| RSN AS | Wholesale & retail | 2018 |
| RSS Eiendomsselskap AS | Real estate | 1989 |
| Rsss AS | Professional & scientific | 2014 |
| Rt-Service AS | Wholesale & retail | 2020 |
| Rtech AS | Professional & scientific | 2005 |