| Nar Holding AS | | 2014 |
| Nardo Invest AS | | 2018 |
| Narify AS | Information & communication | 2023 |
| Natta Studio AS | Education | 2026 |
| Natur for Alle Ans | Wholesale & retail | 1991 |
| Naturdoktoren AS | Agriculture & fishing | 2023 |
| Navgården AS | Real estate | 2020 |
| Navigare Holding AS | Wholesale & retail | 2016 |
| Navigasjonsbutikken Kart.No AS | Manufacturing | 2024 |
| Navigate Invest AS | Construction | 2025 |
| Navigation Plus AS | | 2021 |
| Navora Capital AS | | 2025 |
| Navtell AS | Professional & scientific | 2026 |
| NB Holding AS | Construction | 2005 |
| NBS Solutions AS | Real estate | 2005 |
| NC Tech AS | Construction | 2019 |
| NCP Verktøy AS | Wholesale & retail | 2009 |
| ND Holdco AS | Wholesale & retail | 2019 |
| ND Invest AS | Financial services | 2013 |
| ND Propco AS | Real estate | 2020 |
| Nde Bergen AS | Real estate | 1946 |
| NDT Service AS | Wholesale & retail | 2013 |
| NE Invest AS | Financial services | 2005 |
| Ne.Sa. Bygg AS | Construction | 2022 |
| Nebdal Holding AS | Financial services | 2012 |
| Nedre Torggate 10 B Eiendom AS | Real estate | 2022 |
| Nedrehagen Holding AS | | 2019 |
| NEED2TRAVEL AS | Administrative & support | 2025 |
| Neetly AS | Information & communication | 2008 |
| Negahyn Invest AS | | 2024 |
| Neglfabrikken AS | Other services | 2019 |
| Nego Norge AS | Wholesale & retail | 1993 |
| Neltech AS | Professional & scientific | 2024 |
| Nemia Holding AS | | 2022 |
| Nemrac AS | Professional & scientific | 2022 |
| Nems AS | Professional & scientific | 1986 |
| Nena Invest AS | | 2024 |
| Neodental AS | Manufacturing | 2023 |
| Neotek AS | Information & communication | 2024 |
| Neresen AS | Professional & scientific | 2021 |
| Nes Fircroft Holdings Norway AS | Administrative & support | 2014 |
| Nes Fircroft Management AS | Administrative & support | 2011 |
| Nes Fircroft Norge AS | Administrative & support | 2005 |
| Nesa Energy AS | Professional & scientific | 2021 |
| Nest-Eiendom AS | Real estate | 2005 |
| NEST-EIENDOM1 AS | Real estate | 2024 |
| Nesvik Holding AS | Real estate | 2015 |
| Nesvåg Invest AS | | 2026 |
| Nesvåg Skyssbåt AS | Transport & logistics | 2019 |
| Netapp Norway AS | Wholesale & retail | 2005 |
| Netcreate Da | Wholesale & retail | 2003 |
| Neto AS | Wholesale & retail | 2010 |
| Netpower Business Solutions AS | Information & communication | 2006 |
| Netpower Contracting AS | Information & communication | 2025 |
| Netpower IT Solutions AS | Information & communication | 2000 |
| Netpower Web Solutions AS | Information & communication | 2000 |
| Nettved AS | Wholesale & retail | 2022 |
| Network Agencies AS | Wholesale & retail | 2018 |
| New Dawn Digital Media AS | Information & communication | 2021 |
| Nexa Drift AS | Real estate | 2007 |
| Nexblue AS | Wholesale & retail | 2023 |
| Nexim AS | Wholesale & retail | 2016 |
| Nexo AS | Wholesale & retail | 2025 |
| Next Systems AS | Wholesale & retail | 1997 |
| Nextify Media AS | Professional & scientific | 2024 |
| NF Partners AS | | 2026 |
| Nf&E AS | | 2025 |
| NFH 2603149 AS | Information & communication | 2026 |
| NFH 2603150 AS | Information & communication | 2026 |
| Nfo Finans AS | Financial services | 2005 |
| Ngopi AS | Manufacturing | 2021 |
| Nguyen Tran Vo AS | | 2026 |
| Nikkel Forvaltning AS | Real estate | 2022 |
| Nikkelveien 1 AS | Real estate | 1976 |
| Nikkelveien 11 AS | Real estate | 2006 |
| Nikkelveien 14 AS | Real estate | 1980 |
| Nikkelveien 3 AS | Real estate | 2003 |
| Nikkelveien 8/10 AS | Real estate | 2005 |
| Niku AS | Wholesale & retail | 2022 |
| Nils Auto AS | Wholesale & retail | 2026 |
| Nilsaklampen Utbygging AS | Real estate | 2025 |
| Nilssen&Nygaard Bygg AS | Construction | 2024 |
| Ninas Holding AS | | 2024 |
| Ninny Da | Wholesale & retail | 2006 |
| Nionor Holding AS | Information & communication | 2024 |
| Nionor Software AS | Information & communication | 2023 |
| Nitron AS | Real estate | 2007 |
| Nivesi Invest AS | | 2024 |
| Niya Da | Wholesale & retail | 2010 |
| Njord Astra AS | Professional & scientific | 2026 |
| Njål Østerhus Finans AS | Real estate | 2016 |
| Njærheim Eiendom AS | Real estate | 1992 |
| Njærheim Holding AS | Real estate | 2005 |
| Njærheim Rør AS | Construction | 2010 |
| Nk-Holding AS | Administrative & support | 2019 |
| Nlime Invest AS | | 2021 |
| NLM Sandnesporten AS | Real estate | 2018 |
| Noc AS | Hospitality | 2021 |
| Nocean AS | Professional & scientific | 2025 |
| Nocon Norwegian Construction AS | Professional & scientific | 2023 |