| Radix Invest AS | Gamle Fredrikstad | 2013 |
| Radonconsult AS | Stavanger | 2025 |
| Radonpartner AS | Oslo | 2024 |
| Radoslav Bartak | Sørumsand | 2004 |
| Radvip AS | Oslo | 2013 |
| Raet Invest AS | Tvedestrand | 2006 |
| Raf Rafal Jacek Kalinowski | 80-398 Gdansk | 2005 |
| Raf-Holding AS | Avaldsnes | 2019 |
| Rafag Gruppen AS | Slattum | 2025 |
| Rafaglass AS | Tromsø | 2013 |
| Rafal Artur Nowak | Kongsberg | 2007 |
| Rafal Kuzniewski Arkadiu | 84-240 Rumia | 2006 |
| Rafal Kwiatkowski | 83-110 Tczew | 2006 |
| Rafals Elektro AS | Kristiansand S | 2019 |
| Rafbrim Ehf Nuf | 340 Stykkisholmur | 2016 |
| Rafdal Maskin AS | Frekhaug | 2025 |
| Rafeyri Ehf Nuf | Is-600 Akureyri | 2022 |
| Rafos Entreprenør AS | Brumunddal | 2011 |
| Rafos Holding AS | Brumunddal | 2011 |
| Rafoss Glass AS | Kvinesdal | 2024 |
| Rafpo AS | Dal | 2024 |
| Rafrich Agenturer AS | Andebu | 2011 |
| Raften-Dalveien SA | Stokmarknes | 2016 |
| Ragde Entreprenør AS | Oslo | 2015 |
| Raglamyr Sør Eiendom AS | Sandeid | 2013 |
| Ragn Entreprenør AS | Oslo | 2022 |
| Ragnar Aas AS | Evje | 1987 |
| Ragnar Sollie Ans | Stokke | 1990 |
| Ragnar Svensen AS | Stavanger | 1982 |
| Ragnvald Moe AS | Lillehammer | 2020 |
| Rago Holding AS | Søgne | 2005 |
| Rai Contractor | Lv-3453 Dienvidkurzemes Novads | 2019 |
| Rai Contractor AS | Ålesund | 2026 |
| Raidon AS | Frogner | 2015 |
| Raiduva, Daivos Groutuzienes II | Lt-85128 Akmenes R.Sav | 2011 |
| Raiga Bygg AS | Nøtterøy | 2019 |
| Rail Norway AS | Ørje | 2017 |
| Rail Production Sweden AB Nuf | Oslo | 2013 |
| Rail Work I Sverige AB Nuf | Se-791 43 Falun | 2025 |
| Raila AS | Hunndalen | 2025 |
| Railcare Aktiebolag | Se-932 32 Skelleftshamn | 1998 |
| Railcom AS | Lillestrøm | 2016 |
| Railex AS | Oslo | 2021 |
| Railmaint Narvik AS | Narvik | 2011 |
| Raimund Baumgartner GmbH No | At-9463 Reichenfels | 2012 |
| Rainer Roger Brete | Se-880 37 Junsele | 2008 |
| Rainford Emc Systems Limited | St Helens Merseyside Wa11 9Th | 2019 |
| Raj Elektro AS | Gamle Fredrikstad | 2020 |
| Rajab VVS AS | Oslo | 2016 |
| Rajan Byggservice AS | Stokke | 2017 |
| Rajapaa Holding AS | Hesseng | 2026 |
| Rajeveien SA | Skollenborg | 1937 |
| Rajo Holding AS | Leknes | 2020 |
| Rakar Montasje AS | Blommenholm | 2024 |
| Rake Holding AS | Fjellhamar | 2016 |
| Rakeljord Maskin AS | Nordkjosbotn | 2025 |
| Rakennusbetoni - Ja Elementti Sverige AB Nuf | Se-746 96 Skokloster | 2018 |
| Rakkestad Malerkompani AS | Rakkestad | 2012 |
| Rakkestad Park Og Anlegg AS | Degernes | 2007 |
| Rakkestad Torg AS | Moss | 2012 |
| Rakkestad Tre Og Betong AS | Rakkestad | 2020 |
| Rakon AS | Stavanger | 2008 |
| Rakon Bygg AS | Trondheim | 1996 |
| Raks AS | Heggedal | 2013 |
| Rakusic Corporation Nuf | Hr-31417 Piskorevci | 2024 |
| Rakvere RLR | Ee-44309 Lääne-Viru Maakond | 2026 |
| Ral Plus Wojciech Gora | Pl-27-400 Ostrowiec Swietokrzyski | 2012 |
| Ral VVS AS | Verdal | 2021 |
| Ralias AS | Oslo | 2011 |
| Rall Regalbau GmbH | De-74626 Bretzfeld | 2022 |
| Rallar AS | Bjerkreim | 2026 |
| Rallarservice AS | Narvik | 2016 |
| Rallarsving AB Nuf | Oslo | 2018 |
| Ram & Sons Unipessoal Lda | Pt-8400-431 Lagoa | 2023 |
| Ram Entreprenør AS | Ålesund | 2014 |
| Ram Prosjekt AS | Ålesund | 2018 |
| Ram Team Bygg AS | Skreia | 2020 |
| Ramada AS | Fiskarstrand | 2020 |
| Ramas Bygg AS | Kleppestø | 2026 |
| Ramberg Maskin AS | Dagali | 2019 |
| Rambjøllevegen AS | Nesttun | 2016 |
| Rambygg AS | Oslo | 2020 |
| Ramdahl Montasje AS | Hafslundsøy | 2022 |
| Ramdal AS | Haugesund | 2023 |
| Ramdal Eiendomsutvikling AS | Halden | 2021 |
| Ramdal Holding AS | Haugesund | 2023 |
| Ramen Maskin AS | Lom | 2020 |
| Ramfjell AS | Dalsøyra | 2026 |
| Ramfjord Byggservice AS | Tromsø | 2023 |
| Rami Bygg AS | Harstad | 2021 |
| Ramiteh Ou | Fjellhamar | 2016 |
| Ramlo Glass AS | Trondheim | 1997 |
| Ramlos AS | Os I Østerdalen | 1978 |
| Ramma Bygg AS | Lørenskog | 2019 |
| Ramnes Sag Og Høvleri AS | Ramnes | 1987 |
| Ramo Eiendom AS | Haugesund | 2012 |
| Ramotech AS | Bodø | 2015 |
| Ramp Bygg AS | Nedstrand | 2007 |
| Rampegutta AS | Stryn | 2024 |
| Rams Bygg AS | Blomsterdalen | 2017 |