| Raywiz AS | Professional & scientific | 2017 |
| Re Gründerhus AS | Professional & scientific | 2003 |
| Rebla AS | | 2024 |
| Red Orange Technologies AS | Information & communication | 2023 |
| Redpencil Media AS | Information & communication | 2013 |
| Redwall Consulting AS | Professional & scientific | 2025 |
| Refill System Norge Ans | Wholesale & retail | 2004 |
| Reforcetech Distribution AS | Wholesale & retail | 2006 |
| Reinskou AS | | 2005 |
| Reinskou Bygg AS | Construction | 2026 |
| Relativt Enkelt AS | Professional & scientific | 2019 |
| Release & Holding AS | | 2019 |
| Ren Bedrift AS | Administrative & support | 2008 |
| Rene Ruter AS | Administrative & support | 2019 |
| Restaurant Glorioso AS | Hospitality | 2014 |
| Retailors Norway AS | Wholesale & retail | 2021 |
| Retro Tours Norway AS | Administrative & support | 2022 |
| Rettetenner AS | Health & social care | 2015 |
| Rettshjelper Anbudsjuristen AS | Professional & scientific | 2023 |
| Retui AS | Wholesale & retail | 2024 |
| Revolver Consulting AS | Administrative & support | 2009 |
| Revord AS | Professional & scientific | 2016 |
| RH Medical AS | Health & social care | 2025 |
| Ricardo Garcia Holding AS | | 2021 |
| Richard Elseth AS | | 2020 |
| Riks Holding AS | | 2022 |
| Risans Hage AS | Education | 2014 |
| Risenga Pizza Grill AS | Hospitality | 2020 |
| Risk Management Institute AS | Professional & scientific | 1990 |
| Rock & Roll Invest AS | | 2023 |
| Rockne AS | Professional & scientific | 2014 |
| Rockstuff Capital AS | | 2021 |
| Roha AS | Professional & scientific | 2024 |
| Rolf K AS | Wholesale & retail | 2024 |
| Rondane Eiendom AS | Real estate | 1994 |
| Rosmara AS | Hospitality | 2016 |
| Rotneshagen Bolig 2 AS | Real estate | 2022 |
| Rotneshagen Infrastruktur AS | Real estate | 2021 |
| Royal Engineering AS | Professional & scientific | 2022 |
| RS Utsikt AS | Professional & scientific | 2022 |
| Rsi Tunnelpersonal GmbH | Administrative & support | 2014 |
| RSR Invest AS | Professional & scientific | 2007 |
| Rundalsjøen Skog Og Alpint AS | | 2024 |
| Rupca AS | | 2026 |
| Russesjefen AS | Information & communication | 2026 |
| Rygg Kjellesvik AS | Professional & scientific | 2005 |
| Ryss Holding AS | Professional & scientific | 2016 |
| Ryval AS | Information & communication | 2022 |
| Rævs AS | Professional & scientific | 2023 |
| Rødhodefalk AS | | 2022 |
| Røen Engineering Services AS | Professional & scientific | 2026 |
| Rønning Entreprenør AS | Construction | 2007 |
| Rønning Landbruk AS | Agriculture & fishing | 2025 |
| Røyken Boligbygg AS | Real estate | 2011 |
| Røykenveien 136 AS | Real estate | 2024 |
| S Ellingsen AS | Wholesale & retail | 1994 |
| S&S Company AS | Hospitality | 2010 |
| S48 Lyckegård AS | Construction | 2007 |
| S52 Ent AS | Arts & recreation | 2026 |
| Sabbia AS | Information & communication | 2020 |
| Sabre Trader Shipping Limited Nuf | | 2024 |
| Safeline Norway AS | Manufacturing | 2014 |
| Saga Petroleum AS | Professional & scientific | 2018 |
| Saga Regnskap Asker Og Bærum AS | Professional & scientific | 2000 |
| Saga Vekst AS | Professional & scientific | 1985 |
| Sahh AS | Professional & scientific | 2019 |
| Salesdata AS | Professional & scientific | 2024 |
| Salomonsen Investering AS | Transport & logistics | 2005 |
| Saltbuveien Bolig AS | Real estate | 2017 |
| Saltholmen Invest AS | Professional & scientific | 2016 |
| Salto Eiendom AS | Real estate | 2012 |
| Saltoh Holding AS | | 2021 |
| Samiell AS | | 2026 |
| Sana Sko Og Nøkkelservice AS | Other services | 2012 |
| Sanare AS | Financial services | 2017 |
| Sandboe Tannlegesenter AS | Health & social care | 2022 |
| Sandbækken Eiendom AS | Real estate | 2000 |
| Sandbækken Invest AS | | 2023 |
| Sandholt Partners AS | Administrative & support | 2026 |
| Sandis AS | | 2007 |
| Sandkorn Holding AS | | 2019 |
| Sandnes Eiendom Holding AS | Real estate | 2013 |
| Sandvika Bygg Entreprenør AS | Construction | 2018 |
| Santa Cruz Sykler AS | Wholesale & retail | 2019 |
| Sanuspes AS | Wholesale & retail | 2025 |
| Sartor AS | Professional & scientific | 2024 |
| Saveocean AS | Information & communication | 2025 |
| Saw AS | Construction | 2023 |
| Sawalkote Prosjektutvikling AS | Professional & scientific | 2000 |
| Sawi Holding AS | | 2022 |
| Sb-Holding AS | | 2020 |
| Scan Truck AS | Wholesale & retail | 1991 |
| Scandi Energy AS | Professional & scientific | 2018 |
| Scansorb AS | Professional & scientific | 2021 |
| Schive AS | Wholesale & retail | 1963 |
| Schjelderup Dental AS | Health & social care | 2021 |
| Schmersal Nordiska AB Nuf | Wholesale & retail | 1998 |
| Schweitz Holding AS | Professional & scientific | 2018 |
| Scientific Multimedia Da | Information & communication | 2004 |
| Scott Winkler - Spirit of Hockey AS | Other services | 2014 |