| Otto Ressurs AS | Health & social care | 2021 |
| Oulie Invest AS | | 2025 |
| Pai Capital AS | | 2025 |
| PB Utleie AS | Real estate | 2007 |
| Per Erik Kristiansen Holding AS | Financial services | 2005 |
| Peregrine Dunes AS | Real estate | 2007 |
| Personlig Gravferd AS | Other services | 2022 |
| Pewi AS | Construction | 1994 |
| Pewi Holding AS | | 2005 |
| Pilegård Invest AS | Real estate | 2010 |
| Pipa Seaside Invest AS | Real estate | 2006 |
| Pkbilpartner AS | Wholesale & retail | 2017 |
| PKN Holding AS | | 2012 |
| Pmo Drift AS | Hospitality | 2017 |
| Point to Point AS | Wholesale & retail | 2022 |
| Polyvisjon AS | Information & communication | 1986 |
| Pop Elektro AS | Construction | 2020 |
| Portåsveien SA | Real estate | 2009 |
| PPL AS | Professional & scientific | 2020 |
| PRB Arkitekt & Ingeniør AS | Professional & scientific | 2020 |
| Pro Arkitekt AS | Professional & scientific | 2014 |
| Prosap Invest AS | Information & communication | 2005 |
| Prosper AS | Professional & scientific | 2024 |
| Proteknikk AS | Information & communication | 1997 |
| PTT Holding AS | | 2019 |
| Pulse Media AS | Information & communication | 2025 |
| QP Investment AS | Transport & logistics | 2023 |
| Quality Renholdsservice Da | Administrative & support | 1998 |
| Queen Nail & Hair AS | Other services | 2010 |
| R Andersen Transport AS | Transport & logistics | 2013 |
| Radio 7 AS | Information & communication | 1988 |
| Raptor Ans | | 1997 |
| Real Aktiva AS | Professional & scientific | 2017 |
| Red Ginger AS | Professional & scientific | 2021 |
| Redwood Da | Arts & recreation | 2017 |
| Reiselyst Og Norwegian Cruise Center AS | Administrative & support | 1989 |
| Reys Peis AS | Wholesale & retail | 2019 |
| Riko Entreprenør AS | Construction | 2026 |
| RNL Bygg Og Montasje AS | Construction | 2022 |
| Roba Holding AS | | 2020 |
| Rocky Invest AS | | 2019 |
| Romeng AS | Professional & scientific | 2024 |
| Rosfjordgården AS | Real estate | 1973 |
| RRB Betong AS | Construction | 2018 |
| RRB Drift AS | Construction | 2023 |
| RRB Eiendom AS | Professional & scientific | 2023 |
| Runex AS | Wholesale & retail | 1995 |
| Rygh Transport AS | Transport & logistics | 2004 |
| Ryghseterveien Samvirkeforetak | Real estate | 2020 |
| Ryvia AS | Professional & scientific | 2025 |
| Røren Og Kristiansen AS | Construction | 2015 |
| Rørhuus Consulting AS | Professional & scientific | 2013 |
| Saigon Sushi AS | Hospitality | 2014 |
| Sam Transport AS | Transport & logistics | 2022 |
| Sande Begravelsesbyrå AS | Other services | 2025 |
| Sanntidsregnskap AS | Professional & scientific | 2008 |
| Saxe Plast Teknikk AS | Manufacturing | 2020 |
| Scanglide AS | Manufacturing | 2017 |
| Scanglide Holding AS | Wholesale & retail | 2018 |
| Selma Eiendom AS | Real estate | 2020 |
| Sens Design AS | Wholesale & retail | 2020 |
| Sentinel Invest AS | Financial services | 2017 |
| Sentrumstomta Eiendom AS | Real estate | 2018 |
| Serene Capital AS | | 2024 |
| SH Bolig AS | Construction | 2016 |
| Show-Teknikk AS | Arts & recreation | 2008 |
| Signode Norway AS | Wholesale & retail | 1966 |
| Sirnes AS | Wholesale & retail | 1985 |
| Skiheisservice AS | Wholesale & retail | 2001 |
| Skogen Frisør AS | Other services | 2019 |
| Skoger Holding AS | Real estate | 2021 |
| Skogfru AS | Real estate | 2014 |
| Skogsbilveglaget Bråtaseterveien SA | Real estate | 2025 |
| SKR Holding AS | Financial services | 2005 |
| Skårebo Norge AS | Wholesale & retail | 2023 |
| Slåttastølen AS | Real estate | 2019 |
| Smarte-Treprodukter AS | Construction | 2014 |
| Snapburger AS | Hospitality | 2017 |
| Snekkerhallen AS | Construction | 2015 |
| Snekkerhallen Holding AS | Construction | 2016 |
| Snøfonna Investering AS | Real estate | 2006 |
| Solberg Ur Optikk AS | Wholesale & retail | 1989 |
| Somas AS | Wholesale & retail | 1995 |
| Spunk Ans | Arts & recreation | 2000 |
| Sra Eiendom AS | Real estate | 1968 |
| Sra Havna AS | Real estate | 2019 |
| Sra Invest AS | Real estate | 1985 |
| Sra Prosjekt AS | Real estate | 2007 |
| Sra Strandveien Vest AS | Real estate | 1991 |
| Sra Strandveien Vest Utvikling AS | Real estate | 2018 |
| Sra Åsen Vest AS | Real estate | 1991 |
| SS Design Montasje AS | Construction | 2005 |
| Stall Myra AS | Agriculture & fishing | 2000 |
| Stangeland Capital Management AS | | 2026 |
| Star Sun AS | Real estate | 2010 |
| Staulen AS | Financial services | 2005 |
| Steam Clean Buskerud AS | Construction | 1998 |
| Steenbugge AS | | 1999 |
| Steinar Pettersen AS | Real estate | 2009 |
| Steinberg-Invest AS | Real estate | 2015 |