| Robert Dahlstrøm Mur AS | Lier | 2015 |
| Robert Grønli Holding AS | Saltnes | 2007 |
| Robert Hansen Holding AS | Bodø | 2005 |
| Robert Johanssons Byggnadsfirma | Moss | 2002 |
| Robert Krupowies | Oslo | 2009 |
| Robert Nowarkiewicz Norwarkiewicz | Grålum | 2007 |
| Robert Oswiecimski | Oslo | 2009 |
| Robert Pawlowski Zaklad Ogolnobudowalny | 64-100 Leszno | 2015 |
| Robert Rihter | 81-436 Gdynia | 2006 |
| Robert Rolland AS | Indre Arna | 2013 |
| Robert Ruud Bygg AS | Grimstad | 1991 |
| Robert Ruud Holding AS | Grimstad | 2005 |
| Robert Skjelbred Holding AS | Skien | 2020 |
| Robert Skålevik AS | Fjell | 2014 |
| Robert Slettmo AS | Knarrevik | 2017 |
| Robert Sollid AS | Kongsberg | 2025 |
| Robert Søderberg Byggservice AS | Kjeller | 2009 |
| Robert Truchlewski | Oslo | 2009 |
| Robert Vagner Kjøkkenmontering AS | Grimstad | 2019 |
| Robert Wieczorek Rob | Grålum | 2007 |
| Robert's Bygg Ans | Løken | 2007 |
| Roberts Bolig AS | Hamnvik | 2012 |
| Roberts Bygg AS | Oslo | 2026 |
| Robertsen & Slotnes AS | Skjervøy | 1989 |
| Robertsen Eiendom AS | Sortland | 2000 |
| Robertsen Invest AS | Sortland | 2004 |
| Robertsen Marine Interior AS | Kristiansand S | 2026 |
| Robertson Maler AS | Drammen | 2023 |
| Robin Hood Bygg AS | Bryne | 2024 |
| Robin M. AS | Mysen | 2006 |
| Robitek AS | Kvam | 2020 |
| Robo Holding AS | Lundamo | 2005 |
| Robson Bygg AS | Sandvika | 2025 |
| Robust Bygg AS | Storslett | 2024 |
| Robust Elektro AS | Oslo | 2001 |
| Robust Grunnarbeid AS | Gjesvær | 2021 |
| Robust Saging Og Boring AS | Ytre Enebakk | 2025 |
| Robøle Elektro AS | Drammen | 2024 |
| Rock Engineering Uab | Rådal | 2010 |
| Rock Skaar AS | Utskarpen | 2015 |
| Rockforce AS | Engerdal | 2024 |
| Rockland AS | Lærdal | 2025 |
| Rocks Entreprenør AS | Eiken | 2010 |
| Rocor AS | Oslo | 2023 |
| Roda Agri Maskin AS | Finnøy | 2011 |
| Rodeco AB | Se-597 50 Åtvidaberg | 2011 |
| Rodegård Interiør AS | Flå | 2018 |
| Roe Elektro AS | Gol | 2024 |
| Roen Transport AS | Koppang | 2007 |
| Rofi Tak AS | Hønefoss | 2016 |
| Roga Bygg AS | Hommersåk | 2026 |
| Rogaland 3 Bygg AS | Stavanger | 2026 |
| Rogaland Alarmtjenester AS | Haugesund | 2017 |
| Rogaland Betong AS | Sola | 2025 |
| Rogaland Bolig AS | Bryne | 2012 |
| Rogaland Bygg & Betong AS | Ålgård | 2017 |
| Rogaland Bygg & Mur AS | Hafrsfjord | 2020 |
| Rogaland Byggtekniske AS | Stavanger | 2018 |
| Rogaland Byggtjenester AS | Tananger | 2026 |
| Rogaland Elektro AS | Stavanger | 2000 |
| Rogaland Element AS | Tananger | 2023 |
| Rogaland Entreprenør AS | Nærbø | 2023 |
| Rogaland Gulvservice Avd Oslo AS | Oslo | 2021 |
| Rogaland H&M Service AS | Stavanger | 2023 |
| Rogaland Kulde AS | Sandnes | 1999 |
| Rogaland Male Service AS | Stavanger | 2025 |
| Rogaland Miljøsanering Service AS | Tjelta | 2021 |
| Rogaland Montasje AS | Sandnes | 2022 |
| Rogaland Montasje Bygg AS | Stavanger | 2008 |
| Rogaland Rør & Renovering AS | Sola | 2020 |
| Rogaland Rør Og Sveis AS | Bryne | 2025 |
| Rogaland Service AS | Stavanger | 2022 |
| Rogaland Sikkerhet AS | Bryne | 2013 |
| Rogaland Stillas Kompetanse AS | Stavanger | 2012 |
| Rogaland Tak AS | Sandnes | 2015 |
| Rogaland Varmeteknikk AS | Kleppe | 2026 |
| Rogaland Vindu & Glass AS | Oltedal | 2020 |
| Rogaland VVS AS | Hafrsfjord | 2016 |
| Rogalands Rehabilitering AS | Stavanger | 2018 |
| Rogalandshus Bygg AS | Bryne | 2009 |
| Roger Aamodt Bygg AS | Søgne | 2005 |
| Roger Aamodt Invest AS | Søgne | 2022 |
| Roger AS | Mysen | 2006 |
| Roger Bengtsson Måleri | Se-383 92 Mönsterås | 2014 |
| Roger Botnen AS | Steinstø | 2020 |
| Roger Egge Holding AS | Byrkjelo | 2023 |
| Roger Emilsen Transport AS | Eidsvoll | 2014 |
| Roger Graff Holding AS | Fannrem | 2008 |
| Roger H Holding AS | Skåla | 2021 |
| Roger Holding AS | Fjellhamar | 2008 |
| Roger Jordalen Maskin AS | Glesvær | 1996 |
| Roger Nilsen AS | Trofors | 2001 |
| Roger Næss AS | Inderøy | 2023 |
| Roger Rør AS | Lørenskog | 2018 |
| Rogers Rørleggerbedrift Ans | Oslo | 1993 |
| Rogge & Stieper GBR | 24644 Timmaspe | 2008 |
| Rognan Bygg Og Tak AS | Bodø | 2013 |
| Rognan Byggsenter AS | Rognan | 1995 |
| Rognan Maskin AS | Myre | 1990 |
| Rognan Rørservice AS | Rognan | 1995 |