| Nordisk Sprøytebetong AS | Construction | 2009 |
| Nordisk Telemarketing Skole AS | Real estate | 1987 |
| Nordkapp 11-13 AS | | 2005 |
| Nordlia Da | Real estate | 2002 |
| Nordlys Bil AS | Wholesale & retail | 2019 |
| Nordlys Insights AS | Information & communication | 2023 |
| Nordmaskin Eiendom AS | Real estate | 1968 |
| Nordpilan AS | Real estate | 2014 |
| Nordre Gate 12 AS | Hospitality | 2023 |
| Nordre Gate 2 AS | Real estate | 1991 |
| Nordre Gate 2 Invest AS | Real estate | 2025 |
| Nordre Gate AS | Real estate | 2014 |
| Nordre Gate Holding AS | Real estate | 2020 |
| Nordre GT 5 AS | Construction | 2011 |
| Nordre GT. 21 AS | Real estate | 2023 |
| Nordre Hallset Vei 74 AS | Wholesale & retail | 2017 |
| Nordregt. 6 AS | Real estate | 2019 |
| Nordsale AS | Administrative & support | 2025 |
| Nordsetvegen 456 Seksjon 36 AS | Real estate | 2026 |
| Nordsetvegen 468 AS | Real estate | 2021 |
| Nordskar Ortopedi AS | Health & social care | 2025 |
| Nordslettvegen Invest AS | | 2021 |
| Nordslettveien 2 AS | Real estate | 2015 |
| Nordslettveien 3 AS | Real estate | 2007 |
| Nordslettveien 5 AS | Real estate | 2008 |
| Nordtvedt AS | Professional & scientific | 2020 |
| Nordvise AS | Professional & scientific | 2025 |
| Norelli AS | Professional & scientific | 2018 |
| Norentuna AS | Financial services | 2017 |
| Norfakta Markedsanalyse AS | Professional & scientific | 1999 |
| Norferma AS | Professional & scientific | 2025 |
| Norfresh Nord AS | Wholesale & retail | 2008 |
| Norgren Tech AS | | 2019 |
| Norgul AS | Hospitality | 2024 |
| Norhash Holding AS | Information & communication | 2017 |
| Norhaven Group AS | Information & communication | 2025 |
| Norheimsund Næringseiendom AS | Real estate | 2007 |
| Norico Norge AS | Energy | 2024 |
| Noricom Da | Administrative & support | 1995 |
| Norid AS | Information & communication | 2003 |
| Norig AS | | 2019 |
| Norigon AS | Information & communication | 1999 |
| Norigon Eiendom AS | Information & communication | 1989 |
| Norigon Invest AS | Information & communication | 2002 |
| Norinvest AS | Real estate | 1998 |
| Norinvest Bolig AS | Real estate | 2002 |
| Norinvest Bygg AS | Real estate | 2003 |
| Norinvest Drift AS | Real estate | 2007 |
| Norinvest Eiendom AS | Real estate | 2001 |
| Norinvest Eiendomsforvaltning AS | Administrative & support | 2017 |
| Norinvest Finans AS | Real estate | 2012 |
| Norinvest Kapital AS | Real estate | 2019 |
| Norion AS | Real estate | 2017 |
| Norion Eiendomskapital AS | Financial services | 2021 |
| Norion Prosjekt 6 AS | Real estate | 2025 |
| Norlys Marine AS | Manufacturing | 2021 |
| Normann Maritime AS | Education | 2017 |
| Normas AS | Manufacturing | 1983 |
| Normex Global AS | Professional & scientific | 2007 |
| Normi Labs AS | Information & communication | 2023 |
| Normining AS | Information & communication | 2019 |
| Nornevegen 3 Eiendom AS | Professional & scientific | 2019 |
| Norpol Håndverk Ans | Construction | 2008 |
| Norprins AS | Hospitality | 1993 |
| Norrein & Seas AS | Hospitality | 1982 |
| Norrein AS | Administrative & support | 2016 |
| Norrein Holding AS | | 2016 |
| Norrein Hotell- Og Restaurantselskap AS | Real estate | 1981 |
| Norrein Utland AS | | 2023 |
| Nors Graphics AS | Professional & scientific | 2025 |
| Norsala AS | | 2018 |
| Norse Equity AS | Real estate | 2023 |
| Norse Estates AS | Real estate | 2023 |
| Norse Navigation AS | Manufacturing | 2025 |
| Norseman Group AS | Wholesale & retail | 2024 |
| Norservice Eiendom AS | Real estate | 2018 |
| Norsk Avisdrift AS | Information & communication | 1997 |
| Norsk Breddeidrett AS | Arts & recreation | 2010 |
| Norsk Datateknikk AS | Professional & scientific | 2018 |
| Norsk Filmproduksjon AS | Information & communication | 1998 |
| Norsk Fjordskinn AS | Manufacturing | 2020 |
| Norsk Fotofagskole AS | Education | 2001 |
| Norsk Helseinformatikk AS | Information & communication | 1996 |
| Norsk Industriutvikling AS | Real estate | 2021 |
| Norsk Institutt for Kraftelektronikk AS | Professional & scientific | 2026 |
| Norsk Kylling Eiendom AS | Real estate | 1990 |
| Norsk Kylling Eiendom II AS | Real estate | 2006 |
| Norsk Lystbåtformidling AS | Wholesale & retail | 2022 |
| Norsk Mexico AS | | 2020 |
| Norsk Plast AS | Wholesale & retail | 1995 |
| Norsk Plast Holding AS | Wholesale & retail | 2005 |
| Norsk Rør AS | Construction | 1996 |
| Norsk Telekommunikasjon AS | Information & communication | 2007 |
| Norsk Tradisjonsmat Ans | Wholesale & retail | 1998 |
| Norsk Urethan Da | Construction | 2001 |
| Norsk Veiguide Midt Norge Ans | Professional & scientific | 1992 |
| Norske Sjømatbedrifters Servicekontor SA | Other services | 1992 |
| North Arctic Ventures AS | Professional & scientific | 2024 |
| North Nobel Detailing AS | Other services | 2019 |
| North of Wine AS | Wholesale & retail | 2021 |