| Rune Bratseth AS | Arts & recreation | 1994 |
| Rune Devold AS | Professional & scientific | 1995 |
| Rune Granheim & Petter Udness Da | Hospitality | 1996 |
| Rune Hernes Holding AS | | 2022 |
| Rune Jensen Holding AS | Real estate | 2015 |
| Rune Vaadan AS | Construction | 2008 |
| Rune Wæraas AS | Wholesale & retail | 2011 |
| Runek Holding AS | Wholesale & retail | 2016 |
| Russervegen 2 AS | Real estate | 2024 |
| RV Drift AS | Construction | 2023 |
| RVJ AS | Wholesale & retail | 2022 |
| RW Sanering AS | Construction | 2021 |
| Rwe Invest AS | | 2006 |
| Ryddeglede AS | Professional & scientific | 2022 |
| Ryddi AS | Professional & scientific | 2018 |
| Rydning AS | Real estate | 2015 |
| Rydning Bolig AS | Real estate | 2010 |
| Rydning Holding AS | Real estate | 2004 |
| Rydning Næring AS | Real estate | 2016 |
| Rydningen 1 Eiendom AS | Real estate | 2021 |
| Rydningen Boligutleie AS | Real estate | 2018 |
| Rye Boligbygg AS | Real estate | 2008 |
| Ryjord Bil AS | Wholesale & retail | 2014 |
| Rynning Invest AS | Professional & scientific | 2016 |
| Rypereiret Sjølyst AS | Professional & scientific | 2005 |
| Rypheim Holding AS | | 2019 |
| Real Merkantil A/S | Real estate | 1988 |
| RÁN Offshore AS | Transport & logistics | 2014 |
| RÁN Shipping AS | Transport & logistics | 2024 |
| Rå Interiør AS | Wholesale & retail | 2020 |
| Rå:D AS | Arts & recreation | 2023 |
| Råholt Forretningseiendom AS | Real estate | 2025 |
| Rånes Retail AS | Wholesale & retail | 2018 |
| Rått Byrå AS | Information & communication | 2023 |
| Rød Holdingselskap AS | | 2023 |
| Rødahl Og Clausen Eiendom Da | Real estate | 1996 |
| Rødevand Holding AS | Professional & scientific | 2016 |
| Rødsand Multiservice AS | Transport & logistics | 2018 |
| Rødsten Holding AS | Real estate | 2014 |
| Røe Kommunikasjon AS | Real estate | 2007 |
| Røe Ventures AS | Information & communication | 2026 |
| Røgler Holding AS | | 2019 |
| Røkkes Bilservice AS | Other services | 1985 |
| Røllikvegen 16A AS | Real estate | 2010 |
| Rømme Holding AS | | 2025 |
| Rønnan AS | Real estate | 2020 |
| Rønneberg Eiendom AS | Real estate | 2014 |
| Rønning Consulting AS | Professional & scientific | 2021 |
| RØREKSPERT1 AS | Construction | 2017 |
| Rørfunn AS | Construction | 1995 |
| Rørlegger Midt-Norge AS | Construction | 2011 |
| Rørlund AS | Real estate | 2009 |
| Røroshytta Holding AS | Manufacturing | 2023 |
| Røsdal Eiendom AS | Real estate | 2005 |
| Røsholm AS | | 2026 |
| Røskaft Kjøkken & Interiør AS | Wholesale & retail | 1995 |
| Røskaft Prosjekt AS | Wholesale & retail | 2014 |
| Røsst AS | | 2024 |
| Røysa AS | | 2026 |
| Røåsen Vasslag SA | Water & waste | 2006 |
| S & S Kiosk Og Mat AS | Wholesale & retail | 2024 |
| S Aakre Holding AS | | 2022 |
| S Blakstad Holding AS | | 2023 |
| S E Holding AS | Wholesale & retail | 2005 |
| S Holding AS | | 2005 |
| S Isaksen Holding AS | Real estate | 2018 |
| S Skauge Holding AS | | 2022 |
| S&S Drift Da | Construction | 2026 |
| S. a. Reppe Holding AS | Professional & scientific | 2019 |
| S. Sandøy Invest AS | Real estate | 2005 |
| S. Storøy Invest AS | | 2025 |
| S.H Eiendom AS | Real estate | 2020 |
| S.Hahn Holding AS | | 2025 |
| S.Tangen Holding AS | | 2026 |
| S.Ø. Holding AS | Real estate | 2018 |
| S/B Adm AS | Administrative & support | 2018 |
| S/B Merk AS | Administrative & support | 2018 |
| S5 Studio AS | Information & communication | 2026 |
| Sa-Wi AS | | 2020 |
| Saa AS | | 2025 |
| Sabroso AS | Real estate | 1993 |
| Sabrura 1 AS | Hospitality | 2026 |
| Sabrura 2 AS | Hospitality | 2026 |
| Sabrura 3 AS | Hospitality | 2026 |
| Sabrura Bakklandet AS | Hospitality | 2016 |
| Sabrura Byåsen AS | Hospitality | 2023 |
| Sabrura Drift AS | Hospitality | 2014 |
| Sabrura Lade AS | Hospitality | 2014 |
| Sabrura Sirkus AS | Hospitality | 2015 |
| Sabrura Solsiden AS | Hospitality | 2015 |
| Sacco Eiendom AS | Real estate | 2021 |
| Sacco International AS | Manufacturing | 2017 |
| Saether Invest AS | | 2021 |
| Saeva Holding AS | Real estate | 2015 |
| Safari Film AS | Information & communication | 2017 |
| Safe Plug AS | Professional & scientific | 2019 |
| Safebase AS | Information & communication | 2013 |
| Safegruppen AS | Professional & scientific | 2006 |
| Safetec Nordic AS | Professional & scientific | 2002 |
| Safezone AS | Professional & scientific | 2021 |