| Raspire AS | Trondheim | 2021 |
| Rastad & Relling Arkitektkontor AS | Oslo | 1972 |
| Rasten Limited | Tx146Gh Cleveland | 2010 |
| Rastrum AS | Førde | 2024 |
| Rastum Holding AS | Rådal | 2022 |
| Rasve Invest AS | Røyneberg | 2022 |
| Rat'R Solutions AS | Kongsberg | 2025 |
| Ratec Nuf | Oslo | 2008 |
| Rath AS | Stavanger | 2008 |
| Rathbridge Consultants Ltd | Im1 4Ls Douglas | 2012 |
| Rathe Holding AS | Melhus | 2021 |
| Ratio Arkitekter AS | Oslo | 1991 |
| Ratio AS | Tønsberg | 2023 |
| Rationel Staldinventar | Dk-8722 Hedensted | 2018 |
| Ratium AS | Drammen | 2016 |
| Rator Holding AS | Stavanger | 2012 |
| Ratto Byggprosjektering AS | Fagernes | 2018 |
| Ratun AS | Ås | 2020 |
| Ratvik Travel AS | Ålesund | 2008 |
| Rauaraddel AS | Stavanger | 2015 |
| Raufoss Automotive AS | Oslo | 2016 |
| Raufoss Development AS | Raufoss | 2021 |
| Raufoss Engineering AS | Gjøvik | 2007 |
| Raufoss Industripark Vest AS | Hamar | 2021 |
| Raugland AS | Stavern | 1998 |
| Raugstad Arkitektur AS | Sandnes | 2012 |
| Raugstad AS | Sandnes | 2007 |
| Rauk AS | Bekkestua | 2021 |
| Rauk Peak AS | Bekkestua | 2025 |
| Raukvilevippa Holding AS | Ås | 2023 |
| Rauland Holding AS | Rauland | 2012 |
| Rauma Prosjekt AS | Oslo | 2017 |
| Raumare OY Nuf | Fi-26510 Rauma | 2026 |
| Raumaster AB | Se-734 32 Hallstahammar | 2013 |
| Raundalen Consulting AS | Skulestadmo | 2022 |
| Raune AS | Bryne | 1991 |
| Raunehaugen Invest AS | Fitjar | 2020 |
| Raus Design Studio AS | Larvik | 2024 |
| Rava AS | Nøtterøy | 2025 |
| Ravel AS | Bremnes | 2025 |
| Raven Media AS | Hvalstad | 2020 |
| Raven Norge Nuf | Is-600 Akureyri | 2022 |
| Ravensburger Rådgivning AS | Kleppestø | 2021 |
| Ravi Rådgivning AS | Nærbø | 2010 |
| Ravind AS | Oslo | 2011 |
| Ravn Consult AS | Narvik | 2017 |
| Ravn Hagen Engineering AS | Rådal | 2025 |
| Ravn Nexus AS | Auli | 2024 |
| Ravnaas AS | Kristiansand S | 2023 |
| Ravnaas Rekruttering & Utvikling AS | Kristiansand S | 2014 |
| Ravndal & Moore Projects AS | Sandnes | 2001 |
| Ravnura AS | Stavanger | 2013 |
| Ravo Eiendom AS | Stårheim | 2023 |
| Raw AS | Trondheim | 2014 |
| Raw Capital AS | Gol | 2002 |
| Raw Holding AS | Hokksund | 2010 |
| Raw Solutions AB Nuf | Se-261 44 Landskrona | 2024 |
| Raxo AS | Sandnes | 2010 |
| Raxu AS | Oslo | 2017 |
| Ray Ray AS | Oslo | 2020 |
| Ray Tronic AS | Kløfta | 1996 |
| Rayen Intec GmbH | De-07318 Saalfeld | 2019 |
| Rayfern | Gb-Pe1 5De Peterborough | 2016 |
| Raymarine Norge AS | Moss | 2005 |
| Raymark AS | Fjellhamar | 2012 |
| Raymond Kristoffersen AS | Sandefjord | 2013 |
| Raymond Pettersen AS | Lillestrøm | 2016 |
| Rayon Design AS | Oslo | 2016 |
| Raytheon Anschütz GmbH | 24106 Kiel | 2009 |
| Raytheon Australia Pty Limited | Canberra Airport Act 2609 | 2011 |
| Raytheon Radar Ltd. Nuf | Us-01876-0901 Tewksbury, Massachuse | 2013 |
| Raywiz AS | Asker | 2017 |
| RB Carbon AS | Jar | 2025 |
| RB Consulting AS | Sandnes | 2022 |
| RB Ingeniørtjenester AS | Sem | 2025 |
| RB O&G Services Ltd | Gloucestershire Gl53 8Pj | 2017 |
| RB Resurs AS | Molde | 2025 |
| RB Solutions AS | Tønsberg | 2022 |
| RB Subsea Services Ltd Nuf | Ab21 9Gx Aberdeen Sc | 2024 |
| Rbas Datter AS | Oslo | 2026 |
| RBB Economics Norway LLP Nuf | London Ec2M 3Ty | 2023 |
| RBK & Liverpool Invest AS | Ørsta | 2011 |
| RBK Invest AS | Oslo | 2023 |
| RBM Industries, Inc. | Ssan Antonio Tx 78258 | 2025 |
| RBM Invest AS | Stokmarknes | 2021 |
| Rbm-Ndt Sp.Z.O.O. | Pl - 41-500 Chorzow | 2014 |
| Rbo Engineering & Project Management AS | Ski | 2009 |
| Rbtechnologies SP. Z O.O. Nuf | 40-014 Katowice | 2024 |
| Rbuilding AS | Slependen | 2024 |
| RC Offshore AS | Knarrevik | 2015 |
| RCC Regnskap AS | Askim | 2012 |
| RCC Revisjon AS | Sarpsborg | 2023 |
| RCF Services Limited | Ab14 0Rp | 2008 |
| Rci AS | Stavanger | 2012 |
| Rco Interiørdesign AS | Oslo | 2019 |
| Rco Trading AS | Gressvik | 2018 |
| RCR Research Communicate & Results AS | Hamar | 2003 |
| RD Consult AS | Oslo | 2021 |
| RD Engineering AS | Høvik | 2011 |
| RD Forbrenningskonsult AS | Bryne | 2025 |