| Manumission Consulting AS | Professional & scientific | 2021 |
| Marine Performance & Service AS | Manufacturing | 2012 |
| Maskinrep & Service AS | Manufacturing | 1994 |
| Maur Bilpåbygg AS | Manufacturing | 1999 |
| Mejc Sales AS | Professional & scientific | 2021 |
| Meyer AS | Real estate | 2003 |
| Miles at Sea AS | Information & communication | 2021 |
| Miljøteknikk AS | Wholesale & retail | 1991 |
| Mirano AS | Real estate | 2000 |
| Mirano Eiendom AS | Real estate | 1995 |
| Mitseim Holding AS | | 2023 |
| MLW Invest AS | | 2021 |
| MN Auto AS | Wholesale & retail | 2025 |
| MP Eiendomsinvest AS | Real estate | 2021 |
| Mpos AS | Transport & logistics | 2024 |
| MSM AS | Real estate | 2006 |
| Murmester Reidar Pettersen AS | Construction | 1972 |
| Mølle Holding AS | Financial services | 2015 |
| Møller Eiendom AS | Real estate | 1990 |
| Ner AS | Real estate | 2020 |
| Nesvang Barnehage Da | Education | 2004 |
| New Beauty AS | Other services | 2012 |
| Nils Justad & Sønner AS | Transport & logistics | 1971 |
| Nordic Cover AS | Manufacturing | 2017 |
| Norgips Norge AS | Manufacturing | 2003 |
| Norsk Hus & Hytteutvikling Ans | Construction | 2001 |
| North West Marine AS | Professional & scientific | 1993 |
| Nostsoft AS | Agriculture & fishing | 2001 |
| Nyhus Motorsport AS | Arts & recreation | 2025 |
| Nylum Invest Da | Real estate | 2005 |
| Odd Eriksen AS | Transport & logistics | 1981 |
| Omwb Invest AS | | 2023 |
| Oona Grafisk Design AS | Professional & scientific | 2012 |
| Oppheim Holding AS | Real estate | 2006 |
| Ordino Design AS | Real estate | 2023 |
| Ordino Holding AS | Real estate | 2023 |
| Oskar Malerservice AS | Construction | 2024 |
| Pa Høyen Holding AS | Other services | 2017 |
| Paal GmbH | Construction | 2002 |
| Paradisreiser AS | Administrative & support | 2005 |
| Pasos AS | Wholesale & retail | 2020 |
| Pasos Bil AS | Wholesale & retail | 2022 |
| Pedersen Entreprenør AS | Construction | 2022 |
| Philip Lys Ide AS | Construction | 2019 |
| Pontoon Invest AS | Information & communication | 2014 |
| Prima Eiendomsservice AS | Administrative & support | 2012 |
| Profilservice AS | Manufacturing | 1991 |
| Pølsebaren AS | Hospitality | 2017 |
| Quercus Consulting AS | Professional & scientific | 2023 |
| Rdtm Holding AS | Wholesale & retail | 2022 |
| Red Devil Holding AS | | 2023 |
| Reknes Academy AS | Professional & scientific | 2006 |
| Resonans Ans | Wholesale & retail | 2001 |
| Rett Ved AS | Manufacturing | 2012 |
| Ristesund AS | Administrative & support | 2024 |
| Roar Frantzen Holding AS | Information & communication | 2023 |
| Rocksport Booking AS | Professional & scientific | 2023 |
| Rølles AS | Real estate | 2018 |
| Rønningen Elektroservice AS | Manufacturing | 2025 |
| Safir Invest AS | | 2025 |
| Sande Avis AS | Information & communication | 1995 |
| Sande Billakkering AS | Other services | 2015 |
| Sbgo Eiendom AS | Real estate | 2015 |
| Sbgo Holding AS | Real estate | 2015 |
| Scandihall AS | Wholesale & retail | 2018 |
| Schivonschei AS | | 2024 |
| Sehu Consulting AS | Professional & scientific | 2025 |
| SGT Invest AS | Construction | 2005 |
| Silje Wessel Pettersen AS | Professional & scientific | 2023 |
| Simensoni AS | | 2021 |
| Siv Krøs Holding AS | | 2021 |
| Skjølaas Consult AS | Professional & scientific | 2018 |
| Skjønvik Anleggsdrift AS | Water & waste | 2016 |
| Sla Consulting AS | Professional & scientific | 2019 |
| Slaven Din AS | Administrative & support | 2025 |
| Solid Bygg & Anlegg AS | Construction | 2026 |
| Somnium AS | Real estate | 2015 |
| Spacetronix Holding AS | | 2025 |
| Spinner Norge AS | Wholesale & retail | 2007 |
| Sport`S Hjørnet Ans | Hospitality | 2004 |
| Springtime AS | Real estate | 2004 |
| Steel & Plast AS | Construction | 2016 |
| Steinjoh Consult AS | Professional & scientific | 2001 |
| Stig Ventures AS | | 2024 |
| Stomperud Eiendom AS | Real estate | 2015 |
| Strømm Eiendom AS | Real estate | 2000 |
| Strømsheim & Horten AS | Construction | 2021 |
| Stueflatens AS | | 2025 |
| Sundland Varetaxi AS | Transport & logistics | 2018 |
| Svelvigen Brygge 1 AS | Real estate | 2019 |
| Svelvigen Brygge 2 AS | Real estate | 2020 |
| Svelvigen Brygge AS | Real estate | 2017 |
| Svelvigen Brygge Sagtunet AS | Real estate | 2020 |
| Svelvigen Brygge Utleie AS | Real estate | 2020 |
| Svelvigen Eiendom 1 AS | Real estate | 2017 |
| Svelvigen Invest AS | Professional & scientific | 2007 |
| Svelvik Apotek AS | Wholesale & retail | 2023 |
| Svelvik Bil AS | | 2026 |
| Svelvik Bilsalg AS | Wholesale & retail | 1998 |
| Svelvik Båtservice AS | Manufacturing | 1994 |