| Plegro Skriblerier AS | Information & communication | 2023 |
| Polsk Handyman AS | Construction | 2019 |
| Potone Invest AS | | 2025 |
| Pouch Technologies AS | Information & communication | 2021 |
| Powerdog AS | | 2019 |
| Prandi Consult AS | Professional & scientific | 2024 |
| Praxari AS | Professional & scientific | 2026 |
| Precise Resources AS | Manufacturing | 2012 |
| Primeclean AS | Administrative & support | 2026 |
| Prinfo A/S | Professional & scientific | 1988 |
| Privat Restaurantdrift AS | Hospitality | 2020 |
| Pro Cornea Spesiallinser AS | Wholesale & retail | 2026 |
| Pro-Lux AS | Health & social care | 2022 |
| PRO2DO AS | Professional & scientific | 2005 |
| Proconsulting AS | Professional & scientific | 1998 |
| Profmof AS | Wholesale & retail | 2015 |
| Prosperare AS | Professional & scientific | 2015 |
| Provit Norge AS | Wholesale & retail | 2017 |
| Provita Ans | Real estate | 1987 |
| PTC Holding AS | Construction | 2005 |
| Qua AS | | 2023 |
| Quality Hotel Grand AS | Hospitality | 2002 |
| Quantalytics AS | | 2023 |
| Quarten AS | | 2019 |
| Quartex AS | Information & communication | 2023 |
| Quben AS | Real estate | 1983 |
| R G Isaksen AS | Wholesale & retail | 1959 |
| R&R Eiendomsselskap AS | Wholesale & retail | 2012 |
| R&R Invest AS | Wholesale & retail | 2015 |
| R.K.I. AS | Wholesale & retail | 2005 |
| R1 Gruppen AS | Real estate | 2005 |
| R1 VVS AS | Construction | 2014 |
| Ra - Invest AS | Financial services | 2005 |
| Radian AS | Professional & scientific | 1996 |
| Radio Og TV Hjørnet AS | Wholesale & retail | 1991 |
| Rafal Artur Nowak | Construction | 2007 |
| Ragev Holding AS | Education | 2005 |
| Ragnar Syvertsen 1 AS | | 2019 |
| Raje Avløp AS | Water & waste | 2010 |
| Rampestreken AS | Wholesale & retail | 2020 |
| Rare Invest AS | Financial services | 2018 |
| Rat'R Solutions AS | Professional & scientific | 2025 |
| Raumyr Barnehage SA | Education | 1997 |
| Raumyrveien 9 AS | Real estate | 2017 |
| RC Media AS | | 2017 |
| Regnskapsproffen AS | Professional & scientific | 2013 |
| Reidar Brekke AS | Real estate | 1989 |
| Reinkall AS | Real estate | 2013 |
| Reklame Og Rabatter AS | Hospitality | 2017 |
| Remakeable AS | Professional & scientific | 2026 |
| Rennefix AS | Administrative & support | 2025 |
| Rentx AS | Other services | 2012 |
| Renée Velvære AS | Other services | 2021 |
| Revill Capital Management AS | Professional & scientific | 2016 |
| RF BILPLEIE ANS Per Ramstad og Halvard Frågodt | Other services | 1993 |
| Riavere Holding AS | | 2021 |
| RK Invest Group Holding AS | Financial services | 2015 |
| RMJ Holding AS | Professional & scientific | 2024 |
| Robert Holtungen Data AS | Wholesale & retail | 1990 |
| Robert Sollid AS | Construction | 2025 |
| Rodenstock Norge AS | Wholesale & retail | 1987 |
| Roger Kjenås Invest AS | Administrative & support | 2006 |
| Roger Trading AS | Wholesale & retail | 2019 |
| Rojema Holding AS | Real estate | 2021 |
| Rolfstad Invest AS | Real estate | 1994 |
| Rolia Invest AS | Real estate | 2005 |
| Rom & Rosin Kongsberg AS | Hospitality | 2011 |
| Ronald Ødegård AS | Administrative & support | 2014 |
| Rotebu Invest AS | Financial services | 2018 |
| Rotegård Invest AS | | 2022 |
| Rowijo Eiendom AS | Construction | 2015 |
| Roya Estetikk AS | Health & social care | 2026 |
| Rua Bygg & Takst AS | Construction | 2019 |
| Rua Taksrud Bygg Ans | Construction | 1998 |
| Runix AS | Professional & scientific | 2020 |
| Rørlegger Ivar Tveiten AS | Construction | 2018 |
| Rørleggermester Åge K Haugerud AS | Construction | 2001 |
| Rørsenteret Kongsberg AS | Construction | 2014 |
| S&P Holding AS | Hospitality | 2024 |
| S.Tveita AS | | 2025 |
| Safeheat AS | Manufacturing | 2011 |
| Safety Data Sheet Consulting AS | Professional & scientific | 2024 |
| Saff AS | Real estate | 2008 |
| Saga Collect AS | Wholesale & retail | 2025 |
| Saggrenda Bilopphuggeri AS | Wholesale & retail | 1996 |
| Sale & Accessories Da | Wholesale & retail | 2008 |
| Sandbæk Eiendom AS | Manufacturing | 1992 |
| Sandbæk Holding AS | Manufacturing | 1993 |
| Sandsvær Vask & Rens AS | Other services | 2003 |
| Sandsværmoen Eiendom AS | Real estate | 2000 |
| Sandsværveien 114 AS | Real estate | 2023 |
| Sandtner Holding AS | Hospitality | 2016 |
| Sandy Hook AS | Professional & scientific | 2005 |
| Sannes Invest AS | | 2025 |
| Santons Invest AS | | 2021 |
| SB Innovasjon AS | | 2021 |
| Scale Consult AS | Professional & scientific | 2012 |
| Scalesim AS | Professional & scientific | 2012 |
| Scandiacare AS | Health & social care | 2025 |
| Scandinavia Eiendom AS | Real estate | 1993 |