| Pizzarestaurant & Pub Casablanca AS | Hospitality | 2013 |
| Plukkselv.No AS | Wholesale & retail | 2016 |
| PMV Invest AS | Professional & scientific | 2024 |
| Polyvox Norge AS | Manufacturing | 1992 |
| Potetbua AS | Hospitality | 2025 |
| Pre Smestad Vest AS | Real estate | 2011 |
| Preg Barnehager Botne AS | Education | 2022 |
| Preg Barnehager Fredly AS | Education | 2022 |
| Preteritum AS | Wholesale & retail | 2019 |
| Pri Takst AS | Real estate | 2020 |
| Pro Boligstyling AS | Professional & scientific | 2015 |
| Prokuria AS | | 2023 |
| Protex Montasje AS | Construction | 2024 |
| PS Food AS | Professional & scientific | 2010 |
| Psykolog Monica Pedersen AS | Health & social care | 2013 |
| Psykolog Titti Hovig AS | Health & social care | 2014 |
| Pti Solutions AS | Professional & scientific | 2019 |
| Puma Eiendom AS | Real estate | 2020 |
| Puma Gruppen AS | Real estate | 2020 |
| Puma Invest AS | Real estate | 2020 |
| Quenzal AS | Health & social care | 2015 |
| Quick Park AS | Real estate | 2005 |
| Qvadrat Eiendom AS | Real estate | 2015 |
| R.F Auto AS | Wholesale & retail | 2025 |
| Rafnaberg AS | Health & social care | 2015 |
| Rainbow Invest AS | Wholesale & retail | 2017 |
| Rambergveien 16 AS | Real estate | 2013 |
| Rasch Gruppen AS | Real estate | 2005 |
| Ravnaas Aviation AS | Education | 2023 |
| Ravnås Eiendom AS | Real estate | 1988 |
| Realtor AS | Real estate | 2018 |
| Reggestad Bygg AS | Construction | 2007 |
| Reggestad Drift AS | Agriculture & fishing | 2025 |
| Reggestad Drift Da | Agriculture & fishing | 2015 |
| Rehus AS | Real estate | 2005 |
| Remøy Invest AS | Financial services | 2005 |
| Ren Glede Renhold AS | Administrative & support | 2023 |
| Renwald Renhold AS | Administrative & support | 2017 |
| Rettskaffen AS | Professional & scientific | 2026 |
| Revetal Park AS | Real estate | 2010 |
| RG16H AS | Real estate | 2025 |
| Riise Invest AS | Professional & scientific | 2017 |
| Rimstad Holding AS | | 2024 |
| Ringveien 3 Holmestrand AS | Real estate | 2015 |
| RK Valen Holding AS | Construction | 2023 |
| RKV Bygg AS | Construction | 2022 |
| Rockpore AS | Manufacturing | 2020 |
| Roland B AS | Construction | 2022 |
| Romstad Solutions AS | Wholesale & retail | 2021 |
| Ronera AS | Manufacturing | 2005 |
| Rosehagen Holding AS | | 2018 |
| Rovetunet AS | Real estate | 2005 |
| Roy's Murerservice AS | Construction | 2014 |
| RRB Invest AS | Real estate | 2013 |
| RS Logistikk AS | Wholesale & retail | 2023 |
| Ruc Holding AS | | 2021 |
| Rush Import AS | Wholesale & retail | 2021 |
| Rustad Monsen Holding AS | | 2025 |
| Ryan Design AS | Professional & scientific | 2025 |
| Rå Service AS | Other services | 2024 |
| S.Sandvik Holding AS | | 2022 |
| S24 Drammen AS | Arts & recreation | 2025 |
| Safe Driving AS | Education | 2017 |
| Sagberg AS | Professional & scientific | 2021 |
| Salgsinspirasjon AS | Information & communication | 2018 |
| Salt & Petter AS | Arts & recreation | 2026 |
| Sand Bade- Og Campingplass AS | Hospitality | 2013 |
| Sande Multiservice AS | Other services | 2020 |
| Sande Vannverk AS | Water & waste | 1922 |
| Sandtangen Holding AS | Real estate | 2020 |
| Satek AS | Real estate | 2011 |
| Sbcl AS | Administrative & support | 2020 |
| Sbolding AS | | 2022 |
| Scanplast AS | Manufacturing | 1987 |
| Scanslep AS | Wholesale & retail | 1995 |
| Scanslep Service AS | Other services | 2020 |
| Schulstad Elektromiljø AS | Professional & scientific | 2017 |
| Search People AS | Administrative & support | 2021 |
| Seed Solutions AS | Professional & scientific | 2022 |
| Sentrum Legeservice Da | Health & social care | 2016 |
| Sentrumgruppen AS | | 2013 |
| Service Production & Invest AS | Construction | 2019 |
| Sfactr AS | | 2015 |
| SG59H AS | | 2025 |
| SG6H AS | Real estate | 2019 |
| SG94H AS | Real estate | 1981 |
| Sharifi Capital AS | | 2025 |
| Shire AS | | 2024 |
| Silden Transport AS | Transport & logistics | 2020 |
| Singh Næring AS | Real estate | 2017 |
| Sintek Elektro AS | Wholesale & retail | 2025 |
| Sjøsiden Eiendom AS | Wholesale & retail | 2000 |
| Skagsnebb Investering AS | Real estate | 2020 |
| Skarve AS | | 2009 |
| Skottis Holding AS | | 2026 |
| Skramstad Project Solutions AS | Professional & scientific | 2025 |
| Skyteam AS | Professional & scientific | 2020 |
| Skøyen Auto AS | Wholesale & retail | 2021 |
| SLH Holdingselskap AS | Administrative & support | 2004 |
| Slinning Media AS | Information & communication | 2018 |