| On Road AS | Transport & logistics | 2024 |
| Oslo Og Viken Eiendom AS | Real estate | 2007 |
| Paj Invest AS | Real estate | 2018 |
| Pandango AS | Information & communication | 2008 |
| Pearls by Shani AS | Professional & scientific | 2025 |
| Pekejakka AS | Professional & scientific | 2022 |
| Peks AS | Professional & scientific | 2025 |
| Perleugla Eiendom AS | Real estate | 2016 |
| Pictura Gruppen Norge AS | Wholesale & retail | 1975 |
| Pleio Labs AS | | 2026 |
| Premium Bil AS | Wholesale & retail | 2020 |
| Prima Maling AS | Construction | 2010 |
| Private Chef AS | Hospitality | 2025 |
| Probaltic AS | Construction | 2017 |
| Probaltic Entreprenør AS | Construction | 2025 |
| Proff Byggentreprenør AS | Construction | 2022 |
| Promedicus AS | Health & social care | 2011 |
| Proref AS | Construction | 2023 |
| Proscaff AS | Wholesale & retail | 2022 |
| Pure Audio Holding AS | Information & communication | 2019 |
| Recens Energy AS | Professional & scientific | 2020 |
| Rehab Bad AS | Construction | 2017 |
| RH Pentaton Invest AS | | 2023 |
| Ro Finans AS | | 2026 |
| Rogero Holding AS | | 2022 |
| Rolf D Henriksen AS | Information & communication | 1999 |
| Rom & Kulde AS | Construction | 2019 |
| Romerike Bolig AS | Real estate | 2016 |
| Romerike Bolig Invest AS | Real estate | 2007 |
| Romerike Bygg AS | Construction | 2024 |
| Romerike Finans AS | Real estate | 2003 |
| Romerike Gruppen AS | Real estate | 2007 |
| Romerike Hus AS | Real estate | 2007 |
| Romerike Rørteknikk AS | Construction | 2017 |
| RS Pro Bygg AS | Construction | 2026 |
| Rudnor Invest AS | | 2020 |
| Rudshaugen Holding AS | Real estate | 2017 |
| Rupe Holding AS | Construction | 2017 |
| Rælingen El-Installasjon AS | Construction | 2002 |
| Rælingen Graveservice AS | Construction | 2005 |
| Rælingen Kolonial AS | Wholesale & retail | 2013 |
| Schatten Holding AS | | 2023 |
| SDS Bygg AS | Construction | 2015 |
| Sentral Utvikling AS | Real estate | 2014 |
| Sheridan Properties AS | Real estate | 2023 |
| Simen Larssen Holding AS | | 2023 |
| Slynga Eiendom AS | Real estate | 2017 |
| Smaktrondheim AS | Hospitality | 2019 |
| Solfilmsgruppen Norge AS | Wholesale & retail | 2024 |
| Sollia AS | Professional & scientific | 2017 |
| Solxpressen AS | Wholesale & retail | 2022 |
| Sommersel Invest AS | | 2019 |
| Sondov Aero AS | Professional & scientific | 2023 |
| Specto Holding AS | Financial services | 2010 |
| Stallbakken 13 AS | Real estate | 2019 |
| Stallbakken Legekontor AS | Real estate | 2008 |
| Stallbakken Legesenter AS | Health & social care | 2022 |
| Stallbakken Legesenter Da | Health & social care | 2007 |
| Steinleggern AS | Construction | 1998 |
| Stellard AS | | 2026 |
| Stikk Av AS | Wholesale & retail | 2016 |
| Stonks AS | | 2020 |
| Storebø Holding AS | | 2020 |
| Stormyr Invest AS | Real estate | 2018 |
| Strømbergs AS | Wholesale & retail | 1996 |
| Strømbergs Holding AS | Wholesale & retail | 2005 |
| SV Montering AS | Construction | 2022 |
| Svane Hvitevarer Og Transport AS | Wholesale & retail | 2018 |
| Sving Trafikksenter AS | Education | 2025 |
| Sving Trafikkskole AS | Education | 2016 |
| Svopp AS | Wholesale & retail | 2024 |
| Tanga Rør AS | Construction | 2025 |
| Tannverden AS | Health & social care | 2015 |
| Team Berge AS | Education | 2017 |
| Telemark Hospitality Group AS | Real estate | 2024 |
| This Charming Barbershop AS | Other services | 2019 |
| Three Paws Entertainment AS | Information & communication | 2025 |
| Tjernveien 8 AS | Real estate | 2024 |
| Total Bad AS | Construction | 2025 |
| Total Bil AS | Wholesale & retail | 2024 |
| Tracerteknologi Holding AS | | 2013 |
| Treboren Holding AS | Financial services | 2014 |
| Treoro AS | Wholesale & retail | 2015 |
| Trio Prosjekt AS | Real estate | 2020 |
| Triple Ace Enterprise AS | Information & communication | 2023 |
| TS Vekst AS | | 2025 |
| Unik Matservice Ans | Wholesale & retail | 1991 |
| Unisign AS | Wholesale & retail | 2019 |
| Universell AS | Professional & scientific | 2022 |
| Vane Ocean Technologies AS | Professional & scientific | 2018 |
| Vatnebryhn AS | Professional & scientific | 2025 |
| Verjast Security AS | Information & communication | 2021 |
| Verman AS | Wholesale & retail | 2020 |
| Viddal Finans AS | Real estate | 2022 |
| Viginti AS | Financial services | 2020 |
| Viginti II AS | | 2022 |
| Viken Byggruppen AS | Construction | 2020 |
| Vikenbyggruppen AS | Construction | 2026 |
| Vintor Holding AS | | 2018 |
| Vitritech Norway AS | Professional & scientific | 2020 |