| Provest Boligutleie AS | Real estate | 2018 |
| Provest Eiendom AS | Real estate | 2018 |
| Proximum AS | Professional & scientific | 2022 |
| Proxy Eiendom AS | Real estate | 2021 |
| Psykiater Bla AS | Health & social care | 2017 |
| Puglia AS | | 2026 |
| Pumpehus AS | Real estate | 1999 |
| Pumpeteknikk AS | Professional & scientific | 2020 |
| Puttan Holding AS | | 2022 |
| Pål Cedergren Montasje Nuf | Construction | 2009 |
| QDP Arkitekter AS | Professional & scientific | 2017 |
| QHP AS | | 2023 |
| Quizshop.No AS | Information & communication | 2020 |
| R & H Myrvang Invest AS | Financial services | 2011 |
| R B Schüller Nuf | Professional & scientific | 2009 |
| Radio Lux Ans | | 1995 |
| Ragdan Holding AS | | 2025 |
| Railics Da | Information & communication | 2022 |
| Rakon Invest AS | | 2025 |
| Ramen & Pho AS | Professional & scientific | 2021 |
| Ramses Zoo Drøbak AS | Wholesale & retail | 1992 |
| Ramsfjell Transport AS | Transport & logistics | 2018 |
| Ramskjell Consulting AS | Professional & scientific | 2016 |
| Ranes Consulting AS | Financial services | 2005 |
| Raumergården Eiendom AS | Real estate | 1981 |
| Ravstedhus - Edeltek AS | Wholesale & retail | 2002 |
| RC Holding AS | Real estate | 2008 |
| Rdrift AS | Hospitality | 2024 |
| RDT Konsulenten AS | Transport & logistics | 2023 |
| Reba Rør AS | | 2023 |
| Rebell Invest AS | Professional & scientific | 2018 |
| Rebella Invest AS | | 2021 |
| Recore Norway AS | Professional & scientific | 2013 |
| Redy AS | Real estate | 2007 |
| Reenskaug Hotel Drift AS | Hospitality | 2010 |
| Reenskaug Hotel Eiendom AS | Hospitality | 1981 |
| Reisesaksa Frisør AS | Other services | 2021 |
| Reklamehjelpen AS | Professional & scientific | 2011 |
| Reliable Fire Sprinkler (Norway) AS | Wholesale & retail | 2016 |
| Renasco Holding AS | | 2026 |
| Renholdsbedriften AS | Administrative & support | 2010 |
| Rent Vann AS | Wholesale & retail | 2020 |
| Retail Project Consultant AS | Administrative & support | 2015 |
| Revier AS | Wholesale & retail | 2022 |
| Rib AS | Manufacturing | 2005 |
| Rib Invest AS | Real estate | 1977 |
| Ribex Produksjon AS | Arts & recreation | 1998 |
| Ribx AS | Wholesale & retail | 2022 |
| Riefarmo Strategies AS | Professional & scientific | 2025 |
| Ringburg Invest AS | Professional & scientific | 1987 |
| Rinår AS | Financial services | 2008 |
| Riva Import AS | Wholesale & retail | 2020 |
| River Pump Service AS | Wholesale & retail | 2025 |
| Rivtema AS | Construction | 2024 |
| RK Holding Oslo AS | Real estate | 2019 |
| RN Holding AS | Professional & scientific | 2005 |
| Rni Holding AS | | 2020 |
| Rodrig AS | Professional & scientific | 2022 |
| Rogneveien 5 AS | Real estate | 2021 |
| Rojan Parfymeri AS | Professional & scientific | 2014 |
| Rolfsen AS | Wholesale & retail | 2003 |
| Roll AS | Professional & scientific | 2016 |
| Rosenquist AS | Wholesale & retail | 2014 |
| Rosenvinge.No AS | Wholesale & retail | 2019 |
| Rubus AS | Manufacturing | 2005 |
| Rufus AS | Real estate | 2005 |
| RXM Invest AS | | 2025 |
| Rå Kolonial AS | Wholesale & retail | 2017 |
| Rødahl AS | Information & communication | 2019 |
| Rømmen AS | Professional & scientific | 2019 |
| Rønninggården AS | Administrative & support | 1997 |
| Rørleggeriet AS | Construction | 2024 |
| Røsjøs Renholds Service AS | Financial services | 2005 |
| S Anlegg AS | Construction | 2020 |
| S Bygg AS | Construction | 2021 |
| S H Steien AS | Professional & scientific | 2019 |
| S Hennum Holding AS | | 2024 |
| S Rørteknikk AS | Construction | 2023 |
| S T Dahl AS | Wholesale & retail | 1997 |
| S Ventilasjon AS | Construction | 2021 |
| S&Jp Invest AS | | 2024 |
| S.A Prosjekt AS | | 2025 |
| Saa Capital AS | Professional & scientific | 2007 |
| Sab Invest AS | Real estate | 2005 |
| Sabio AS | | 2005 |
| Saco Eiendom AS | Real estate | 2016 |
| Saga Byggservice AS | Construction | 2017 |
| Saga Event AS | Health & social care | 2008 |
| Saga Gård AS | Real estate | 2017 |
| Saga Invest AS | Real estate | 2016 |
| SAGA23 Holding AS | | 2026 |
| Saho Eiendom AS | Real estate | 2002 |
| Sales Mojo AS | Professional & scientific | 2021 |
| Salgstjenester AS | Information & communication | 2023 |
| Salon De Provence Ans | Hospitality | 1996 |
| Saltwater AS | Wholesale & retail | 2005 |
| Samas Vekst AS | Professional & scientific | 2025 |
| Sans Trafikkskole AS | Education | 2020 |
| Santo Abrasives AS | Wholesale & retail | 2009 |
| Santosha AS | Education | 2016 |