| Premien AS | Real estate | 2014 |
| Prestebråtan 29 AS | Real estate | 2017 |
| Prestebråtan Eiendom AS | Real estate | 2007 |
| Prestebråtan Holding AS | Financial services | 2007 |
| Presten Holding AS | Real estate | 2017 |
| Prestvann AS | Real estate | 2005 |
| Printup AS | Manufacturing | 2022 |
| Pro Gym Hokksund AS | Arts & recreation | 2005 |
| Pro Medic Team Norway AS | Education | 2021 |
| PRO3 HR & Bemanning AS | Administrative & support | 2007 |
| Proagro AS | Wholesale & retail | 2019 |
| Producta AS | Professional & scientific | 2004 |
| Project Experts AS | Professional & scientific | 2000 |
| Property Care AS | Real estate | 2014 |
| Proturf Sport AS | Wholesale & retail | 2020 |
| Proven Nordic AS | Wholesale & retail | 2015 |
| PSB AS | Real estate | 2016 |
| Pur Service AS | Administrative & support | 2018 |
| PV Solar AS | Wholesale & retail | 2018 |
| Pål Kristoffersen Holding AS | Financial services | 2005 |
| Qifinity AS | Administrative & support | 2025 |
| Ra Holding & Invest AS | Transport & logistics | 2011 |
| Raad AS | Professional & scientific | 2022 |
| Radome.No AS | Professional & scientific | 2025 |
| Radome.No Holding AS | | 2025 |
| Ranheim Mur&Puss AS | Construction | 2026 |
| Rasmussen Blomster AS | Wholesale & retail | 2020 |
| Ravn Forlag AS | Information & communication | 2022 |
| Raw Holding AS | Professional & scientific | 2010 |
| RDW AS | Agriculture & fishing | 2023 |
| Rectrix Holding AS | | 2019 |
| Regnskap 24/7 AS | Professional & scientific | 2024 |
| REGNSKAPSFØRER1 Autorisert Regnskapsførerselskap AS | Professional & scientific | 1998 |
| Regnskapsøkonomen AS | Professional & scientific | 2019 |
| Reiersrud Eiendom AS | Real estate | 2007 |
| Remi Vetås Holding AS | | 2021 |
| Ren Livsgnist AS | Health & social care | 2022 |
| Renates Fot- Og Hudpraksis AS | Other services | 2026 |
| Renconsult AS | Professional & scientific | 2012 |
| Renessanse Scandinavia AS | Education | 2007 |
| Rentabilitet AS | Transport & logistics | 2013 |
| Revisjon AS | Professional & scientific | 2000 |
| RG Kantinetjenester AS | Financial services | 1987 |
| Ring Andre Teigen Holding AS | Real estate | 2016 |
| Ring Tore Teigen Holding AS | Water & waste | 2005 |
| Ringeriksveien 171 AS | Real estate | 2009 |
| Ristvedt AS | Energy | 2005 |
| RKM Holding AS | | 2024 |
| RKM Invest AS | Administrative & support | 2025 |
| Romulus Equity Limited Nuf | Information & communication | 2009 |
| Rossøya AS | Real estate | 2015 |
| Runar AS | Administrative & support | 2005 |
| Rune Wikheim Elektrisk Installasjon AS | Construction | 2012 |
| Runil Eiendom AS | Real estate | 2020 |
| Rust Eiendom AS | Real estate | 2014 |
| Rust Holding AS | | 2019 |
| Rust Motor Company AS | Wholesale & retail | 2007 |
| RVS AS | Construction | 1996 |
| Røken Eiendom AS | Professional & scientific | 2016 |
| Røken Holding AS | Professional & scientific | 2012 |
| Rønning Indrelid AS | Professional & scientific | 1990 |
| Rønning Indrelid Holding AS | Real estate | 2005 |
| Røren Holding AS | Financial services | 2015 |
| Rørlegger Hansen AS | Construction | 2011 |
| Røsholt Maskin Avd. Hokksund AS | Wholesale & retail | 2022 |
| Røyk AS | Hospitality | 2026 |
| S-Entreprenor AS | Construction | 2025 |
| S. Evjen Engineering AS | Professional & scientific | 2021 |
| S48 Bolig AS | Real estate | 2022 |
| S48 Holding AS | Real estate | 2025 |
| S48 Næring AS | Real estate | 2022 |
| S48 Parkering AS | Real estate | 2005 |
| Sab Holding AS | Professional & scientific | 2016 |
| Sakura Sushi Hokksund AS | Hospitality | 2025 |
| Samaan AS | Wholesale & retail | 2011 |
| Sand Trafikkskole AS | Education | 2020 |
| Sandberg Eiendom Holding AS | Real estate | 2004 |
| Sandbø Holdingselskab AS | Professional & scientific | 2020 |
| Sanden Hotell AS | Hospitality | 2006 |
| Sandholm Holding AS | Financial services | 2017 |
| Sandløkka Eiendom AS | Real estate | 1989 |
| Sando Holding AS | Real estate | 2018 |
| Sandpit Holding AS | Professional & scientific | 2025 |
| Saneringsvarehuset AS | Wholesale & retail | 2018 |
| Saxa Eiendom AS | Real estate | 1998 |
| SBH Invest AS | | 2005 |
| Schinnes Holding AS | Real estate | 2018 |
| Selinas AS | Wholesale & retail | 2020 |
| Sem Transport AS | Transport & logistics | 2019 |
| Sems AS | Construction | 2013 |
| Sevat Løkensgard Molven AS | Health & social care | 2019 |
| SFL Holding AS | | 2021 |
| SG Holdco AS | Professional & scientific | 2021 |
| SG Kapital AS | | 2017 |
| SG Retail AS | Wholesale & retail | 2024 |
| Sibilla Holding AS | | 2026 |
| Sikori Invest AS | Financial services | 2014 |
| Siktehuset AS | Wholesale & retail | 2018 |
| Sinar AS | Financial services | 2009 |
| Siporex Eiendom AS | Real estate | 2011 |