| Per & Louise AS | Real estate | 2025 |
| Perseus Invest AS | Professional & scientific | 2005 |
| Persillesletta AS | Construction | 2024 |
| Pettersand Panorama AS | Real estate | 2022 |
| PGJ Consulting AS | Professional & scientific | 2015 |
| Plankebyen Trening AS | Arts & recreation | 2025 |
| Playbook AS | Professional & scientific | 2024 |
| Pluss Inkludering AS | Health & social care | 2018 |
| Pmtek AS | Professional & scientific | 2018 |
| Polar Auto AS | Wholesale & retail | 2020 |
| Polargruppen Da | Wholesale & retail | 2003 |
| Preg Barnehager Rødsdalen AS | Education | 2022 |
| Prestige Autosport AS | Wholesale & retail | 2021 |
| Proinvent Da | Professional & scientific | 2003 |
| Prone AS | Real estate | 2023 |
| PS Eiendomsutvikling AS | Real estate | 2017 |
| Pøs Holding AS | Transport & logistics | 2021 |
| R-Holding- AS | Financial services | 2018 |
| Rally Bilverksted AS | Other services | 1994 |
| Ramsjord AS | Professional & scientific | 2018 |
| Rana Critical Minerals AS | | 2025 |
| Ravn-Magnussen Holding AS | | 2023 |
| Rc-Holding- AS | Manufacturing | 2018 |
| Rco Trading AS | Professional & scientific | 2018 |
| Reayond AS | | 2020 |
| Redpro AS | Information & communication | 2024 |
| Rega AS | | 2023 |
| Reiden Holding AS | Real estate | 2012 |
| Reinertsen Og Huth AS | Construction | 2025 |
| Reisverk AS | Information & communication | 2026 |
| Renholderne AS | Administrative & support | 2021 |
| Revestreker AS | Real estate | 2019 |
| RH Malerservice AS | Construction | 2025 |
| Riotcrows AS | Wholesale & retail | 2020 |
| Robust Vann AS | Professional & scientific | 2022 |
| Roto Scandinavia AS | Manufacturing | 2025 |
| Rotostøp AS | Manufacturing | 1995 |
| RTC Holding AS | Real estate | 2007 |
| Ruud Dominion AS | Professional & scientific | 2017 |
| Ryde & Berg Orgelbyggeri AS | Manufacturing | 1985 |
| Rydningen Eiendom Ans | Real estate | 2005 |
| Rocco DA | | 1988 |
| Rådgiverhuset AS | Professional & scientific | 2013 |
| Rødkløver Holding AS | Health & social care | 2013 |
| Rørlegger'N Rolf Erik M. Finstad AS | Construction | 2023 |
| Rørleggertjenesten Fredrikstad AS | Construction | 2023 |
| S-H Invest AS | Professional & scientific | 2009 |
| S.E.I Konsult AS | Professional & scientific | 2024 |
| S.K.V.A. SA | Water & waste | 2011 |
| Sae Holding AS | | 2019 |
| Saksbehandler Karlsen AS | Professional & scientific | 2016 |
| Salatmestern AS | Manufacturing | 1988 |
| Salatmestern Eiendom AS | Administrative & support | 2014 |
| Salatmestern Holding AS | Manufacturing | 2016 |
| Saleso Innovations AS | Information & communication | 2025 |
| Salong N AS | Other services | 2017 |
| Sargon Eiendomsselskap AS | Real estate | 1971 |
| Savema Engineering AS | Manufacturing | 2007 |
| Scott Kapital AS | | 2026 |
| SE Det Nå Kabel-Tv AS | Information & communication | 1995 |
| Sebastian Beach House AS | Hospitality | 2025 |
| Sebastian Hansen AS | Construction | 2023 |
| Seilmaker Eklund AS | Manufacturing | 2007 |
| Seut Maritime AS | Manufacturing | 2019 |
| SF Pontona Norge AS | Wholesale & retail | 1984 |
| Sf-Pontona Utleie AS | Arts & recreation | 2023 |
| Shanti Yoga Studio AS | Education | 2026 |
| Sinclair Invest AS | | 1998 |
| Sivilingeniør Per Bjerke AS | Professional & scientific | 2025 |
| Skala Barnehage AS | Education | 2005 |
| Skala Eiendom AS | Education | 2008 |
| Skauen Trading AS | Real estate | 2005 |
| Skavlai AS | Information & communication | 2026 |
| Skin Care by Roled AS | Other services | 2022 |
| Skinconsult AS | Health & social care | 2025 |
| Sky Agency AS | Professional & scientific | 2011 |
| Sky Agency Sports AS | Arts & recreation | 2023 |
| Sky Agency Sports Holding AS | Professional & scientific | 2023 |
| Sky Event AS | Arts & recreation | 2016 |
| Sky Festivals AS | Arts & recreation | 2017 |
| Sky Holding AS | Professional & scientific | 2018 |
| Skåra Graveservice AS | Construction | 2014 |
| Skåra Holding AS | Construction | 2023 |
| Skåra Stenindustri AS | Manufacturing | 1989 |
| Skåraveien 14 AS | Construction | 2011 |
| Slevik AS | Real estate | 2005 |
| Slevik Elektriske AS | Construction | 1991 |
| Slevik Platå Holding AS | | 2019 |
| Slevik Trevare AS | Manufacturing | 1981 |
| Slevikfjellet Vann Og Avløpslag SA | Water & waste | 2010 |
| Slopesense AS | Wholesale & retail | 2026 |
| Smelta AS | Manufacturing | 2024 |
| Småbruket Kjenne Vestre AS | Agriculture & fishing | 2026 |
| Sol Og Velvære AS | Other services | 2020 |
| Solgaard Bensin AS | Wholesale & retail | 2005 |
| Solkap AS | Real estate | 2015 |
| Solkollen Holding AS | | 2023 |
| Sollie Prosjekt AS | Financial services | 2005 |
| Solsikke Holding AS | | 2025 |
| Solstrand Graveservice AS | Construction | 2023 |