| Nedre Skalpe AS | Administrative & support | 2010 |
| Nedre Storgate 11 AS | Real estate | 2013 |
| Nedre Storgate 22 AS | Real estate | 2010 |
| Nedre Storgate 3 AS | Real estate | 2019 |
| Nedre Storgate 46 AS | Real estate | 2009 |
| Nedre Storgt 21 AS | Real estate | 2013 |
| Nedre Torggate 11 AS | Real estate | 2001 |
| Nedre Torggate 14 AS | Real estate | 2005 |
| Nedre Torggate 4 AS | Real estate | 2018 |
| Nedre Torggate 8 AS | Real estate | 2023 |
| Nedre Tverrgate 3 Holding AS | Real estate | 2021 |
| Nedre Ørengate 11 AS | Real estate | 2011 |
| Nedu Holding AS | Manufacturing | 2023 |
| Nemus Drammen AS | Health & social care | 2011 |
| Neras Direkte AS | Administrative & support | 2003 |
| Nerds AS | Hospitality | 1996 |
| Nereides AS | Wholesale & retail | 2004 |
| Neri Capital AS | Real estate | 2011 |
| Nesbygda Utvikling AS | Real estate | 2019 |
| Neset AS | | 2026 |
| Nessessary AS | Professional & scientific | 2004 |
| Nesten Nytt AS | Wholesale & retail | 2024 |
| Netcar AS | Wholesale & retail | 2016 |
| Netsolution AS | Information & communication | 1998 |
| Netsolution Gruppen AS | Wholesale & retail | 2006 |
| Netsolution Viken AS | Information & communication | 2003 |
| Neumanns Gate 6 AS | Real estate | 2015 |
| Nevrohelse Klinikk AS | Health & social care | 2025 |
| New Deal Publishing AS | Information & communication | 2016 |
| New Horizon Invest AS | | 2024 |
| New Life Clinique - NLC AS | Other services | 2019 |
| Newland AS | Arts & recreation | 2005 |
| Newland Expeditions AS | Administrative & support | 2014 |
| Nex AS | Professional & scientific | 2008 |
| Nexconsult AS | Professional & scientific | 2007 |
| Next Home AS | Real estate | 2022 |
| Next Manga Norge AS | Information & communication | 2021 |
| Nextmomentum Holding AS | Professional & scientific | 2021 |
| Nian Invest BT AS | Real estate | 2015 |
| Niaro AS | Wholesale & retail | 2021 |
| Nicco Invest AS | Real estate | 2005 |
| Nicki & Ellis AS | Professional & scientific | 2018 |
| Niclas Persvik AS | | 2019 |
| Nicolaissen Holding AS | Health & social care | 2025 |
| Nigu Holding AS | Financial services | 2017 |
| Nikas Maritime AS | Information & communication | 1997 |
| Nikkhah Holding AS | Real estate | 2015 |
| Nilhorn AS | | 2023 |
| Nils Tveit Holding AS | Professional & scientific | 2005 |
| Nilsam AS | Professional & scientific | 2017 |
| Nilsen & Nilsen Ans | Professional & scientific | 2003 |
| Nima Arrangement AS | Information & communication | 2026 |
| Nima Bygg Og Anlegg AS | Hospitality | 2021 |
| Nima Hagedesign AS | Administrative & support | 2025 |
| Nimo AS | Health & social care | 2017 |
| Nippon Restaurantdrift AS | Hospitality | 2019 |
| Nivpro AS | Construction | 2026 |
| Nizi Holding AS | Wholesale & retail | 2002 |
| NKF Holding AS | Real estate | 2020 |
| NKT AS | Manufacturing | 1990 |
| NKT Crew AS | Administrative & support | 2026 |
| Nla AS | | 2024 |
| NM Graveservice AS | Construction | 2024 |
| Nnnn AS | Professional & scientific | 2016 |
| NO.1 Sushi AS | Hospitality | 2018 |
| Noaya AS | | 2019 |
| Noble House AS | Professional & scientific | 1995 |
| Nogito AS | Professional & scientific | 2000 |
| Noia AS | | 2021 |
| Noliclinic AS | Other services | 2023 |
| Nolla AS | Information & communication | 2024 |
| Nolo Nordic AS | Wholesale & retail | 2023 |
| Noma Norge AS | Professional & scientific | 2023 |
| Noma Norge Eiendom AS | Real estate | 2022 |
| Noma Norge Holding AS | Professional & scientific | 2022 |
| Noplan B AS | Education | 2020 |
| Nor Medic AS | Health & social care | 2025 |
| Nor Rengjøring AS | Administrative & support | 2004 |
| Nor-Klima AS | Construction | 1977 |
| Noranorway AS | Wholesale & retail | 2007 |
| Noranorway Holding AS | | 2026 |
| Noranorway Nye AS | Wholesale & retail | 2026 |
| Noranorway Properties AS | Real estate | 2023 |
| Norcla AS | Financial services | 2016 |
| Nord Bygg Ans | Construction | 1997 |
| Nord Industrier AS | Construction | 2017 |
| Nord Point AS | Construction | 2023 |
| Nord Solar Nuf | | 2023 |
| Nordel Energi AS | Energy | 2021 |
| Norden Eiendom AS | Real estate | 2006 |
| Nordfix AS | Construction | 1985 |
| Nordhøy Lippert Holding AS | | 2026 |
| Nordic Brokers AS | Wholesale & retail | 2017 |
| Nordic Green Power AS | Energy | 2005 |
| Nordic Gruppe AS | Wholesale & retail | 2025 |
| Nordic Innovators Norway AS | Professional & scientific | 2018 |
| Nordic Journeys AS | Administrative & support | 2021 |
| Nordic Oord AS | | 2025 |
| Nordic Senter AS | Other services | 2026 |
| Nordic Shelter AS | Wholesale & retail | 2007 |