| Mývatna AS | | 2019 |
| N&H Rengjøring Ans | Administrative & support | 2024 |
| N2 Plasma Tech AS | Professional & scientific | 2025 |
| Nabil Benabdellah AS | Wholesale & retail | 2026 |
| Nad Solutions AS | Professional & scientific | 2024 |
| Nai AS | Real estate | 2013 |
| Nakuhel Friluftsbarnehage SA | Education | 2007 |
| Namarak AS | Professional & scientific | 2021 |
| Namibia Naturreiser AS | Administrative & support | 2023 |
| Napos AS | Real estate | 2017 |
| Narten Coaching AS | Health & social care | 2021 |
| Nasoma AS | Professional & scientific | 2012 |
| Nature Tours AS | Administrative & support | 2013 |
| Nautilus Group AS | Real estate | 2015 |
| Naven Invest AS | Financial services | 2013 |
| Navestad AS | Wholesale & retail | 1970 |
| Navitas Petroleum Nok Finco AS | Administrative & support | 2025 |
| Nebis AS | Professional & scientific | 2020 |
| Nedre Hogstad Holding AS | | 2019 |
| Nedre Storgate 15-17 AS | Real estate | 2016 |
| Nedre Storgate 19 AS | Real estate | 2018 |
| Nemis Invest AS | Financial services | 2016 |
| Nemus Asker Sentrum AS | Health & social care | 2016 |
| Nemy AS | Real estate | 2025 |
| Neobits AS | Information & communication | 2022 |
| Neon Beachwear AS | Wholesale & retail | 2023 |
| Nesbru Renhold AS | Administrative & support | 2016 |
| Nettpukk AS | Wholesale & retail | 2023 |
| Neuner AS | Professional & scientific | 2024 |
| Neuner Invest AS | Professional & scientific | 2024 |
| Neverlift Holding AS | Construction | 2017 |
| Nevicata AS | Wholesale & retail | 2023 |
| Nevida Engineering AS | Professional & scientific | 2022 |
| Nevroklinikken AS | Health & social care | 2024 |
| New Sounds Da | Information & communication | 2013 |
| Newport Invest AS | Professional & scientific | 2007 |
| Newsea AS | Financial services | 2002 |
| Newtracks AS | Professional & scientific | 2006 |
| Nick AS | | 1996 |
| Nick Eiendom AS | Health & social care | 1986 |
| Nicolias AS | Real estate | 2020 |
| Nicomatic Norway AS | Professional & scientific | 2022 |
| Nicos AS | Information & communication | 2019 |
| Nijo Holding AS | Construction | 2024 |
| Nike Retail B.V. Nuf | Wholesale & retail | 2013 |
| Nileus AS | | 2018 |
| Niru AS | Real estate | 2006 |
| Nissan Nordic, Norsk Filial Av Nissan Nordic Europe OY, Finland Nuf | Wholesale & retail | 2005 |
| No Films AS | Information & communication | 2019 |
| Noddeland Holding AS | | 2022 |
| Nodet Xplosives AS | Wholesale & retail | 2022 |
| Noetica Holding AS | | 2025 |
| Noma Capital AS | Financial services | 2015 |
| Noma Interiørtekstiler AS | Wholesale & retail | 2021 |
| Nomu AS | Information & communication | 2023 |
| Nor Bim Engineers AS | Professional & scientific | 2024 |
| Nor Gastropod Ans | | 1992 |
| Nor-Int AS | Wholesale & retail | 1995 |
| Norart AS | Wholesale & retail | 2021 |
| Norchart AS | Transport & logistics | 1984 |
| Nord Gas Solutions Norway AS | Manufacturing | 2002 |
| Nordal Consulting AS | | 1998 |
| Nordbohus Asker Og Bærum AS | Construction | 1997 |
| Nordic Flow AS | Professional & scientific | 2020 |
| Nordic Hbot AS | Wholesale & retail | 2024 |
| Nordic IP Holding AS | Administrative & support | 2025 |
| Nordic Recycling Systems Norge AS | Wholesale & retail | 2022 |
| Nordic Security AS | Administrative & support | 2026 |
| Nordic Stinger AS | Construction | 2026 |
| Nordic-Webtrade AS | Wholesale & retail | 2007 |
| Nordig Holding AS | Manufacturing | 2021 |
| Nordisk Bilsenter AS | Wholesale & retail | 2026 |
| Nordisk Hundeskole AS | Other services | 2009 |
| Nordisk Kellogg Norge, Filial Til Nordisk Kellogg Aps Danmark Nuf | Wholesale & retail | 1995 |
| Nordisk Mat AS | Wholesale & retail | 2015 |
| Nordisk Telematikk Institutt AS | Education | 1985 |
| Nordkrone AS | Wholesale & retail | 2026 |
| Nordlys Bakeriet AS | Manufacturing | 2021 |
| Nordride AS | Information & communication | 2025 |
| Nordsoft AS | Construction | 2019 |
| Nordstaa Regnskap AS | Professional & scientific | 1995 |
| Norges Cykleforbunds Kompetansesenter AS | Arts & recreation | 2017 |
| Norges Helsesenter AS | Health & social care | 2025 |
| Norges Toppidrettsgymnas Ungdomsskole Asker AS | Education | 2016 |
| Norit Consult AS | Professional & scientific | 2017 |
| Norjournal AS | Information & communication | 2016 |
| Norkri AS | Health & social care | 2013 |
| Nornam Holding AS | | 2023 |
| Norne Holding AS | | 2021 |
| Norrek AS | Transport & logistics | 1996 |
| Norse Future AS | | 2026 |
| Norse R&D AS | Information & communication | 2016 |
| Norse Regnskap & Rådgiving AS | Professional & scientific | 2021 |
| Norse Scan AS | Real estate | 1985 |
| Norsk Helseklinikk AS | Health & social care | 2002 |
| Norsk Robotikk & Automatisering AS | Wholesale & retail | 2026 |
| Norsk Servicebyrå AS | Administrative & support | 1998 |
| Norskstøtte AS | Professional & scientific | 2021 |
| Norstem AS | Information & communication | 2016 |
| Northerm Service AS | Construction | 2018 |