| Mandag.Ai AS | Information & communication | 2025 |
| Mandal Group AS | | 2025 |
| Mandal Hotel Eiendom AS | Real estate | 1996 |
| Mandal Infotech AS | Information & communication | 2024 |
| Mandala AS | Professional & scientific | 2025 |
| Mandaley AS | Wholesale & retail | 2025 |
| Mandalls Gate 4 Butikk AS | Real estate | 2021 |
| Mandalls Gate 4 Næring AS | Real estate | 2021 |
| Mandarell AS | | 2019 |
| Mandarin Holding AS | | 2017 |
| Mandel AS | | 2025 |
| Mandela Eiendom AS | Real estate | 2025 |
| Mandelbaum AS | Professional & scientific | 2014 |
| Mandeli AS | Information & communication | 2026 |
| Mander AS | Arts & recreation | 2018 |
| Manders Premier Holding BV | Manufacturing | 1997 |
| Mandi House AS | Hospitality | 2022 |
| Mandl Holding AS | | 2025 |
| Mandora AS | Information & communication | 2024 |
| Mandrake AS | Real estate | 2015 |
| Manduka AS | Health & social care | 2013 |
| Mandy Holding AS | | 2026 |
| Manefe AS | Financial services | 1996 |
| Maneki AS | Hospitality | 2026 |
| Maneo AS | Hospitality | 2000 |
| Maneo Eiendom AS | Real estate | 2021 |
| Maneo Holding AS | | 2015 |
| Manes AS | | 2005 |
| Manfin Consult AS | Professional & scientific | 2005 |
| Mange Tuer Små AS | Professional & scientific | 2025 |
| Mangelberget Barnehage SA | Education | 1990 |
| Mangfoll AS | | 2023 |
| Mangifor Bidco AS | | 2025 |
| Mangkang AS | Other services | 2024 |
| Manglerud Betong AS | Transport & logistics | 2006 |
| Manglerud Dagligvare AS | Wholesale & retail | 2026 |
| Manglerud Eiendom AS | Real estate | 2012 |
| Manglerud Fysikalske Institutt Da | Health & social care | 1999 |
| Manglerud Kafé AS | Hospitality | 2014 |
| Manglerud Pizza AS | Hospitality | 2022 |
| Manglerud Rørleggerbedrift AS | Construction | 2006 |
| Manglerud Servicesenter AS | Other services | 1987 |
| Manglerud Specsavers AS | Wholesale & retail | 1993 |
| Manglerud Sushi AS | Hospitality | 2024 |
| Manglerud Tannhelsesenter AS | Health & social care | 2005 |
| Manglerud Tele AS | Wholesale & retail | 2001 |
| Manglerud Ur Og Gull AS | Wholesale & retail | 2007 |
| Manglerud Velvære AS | Health & social care | 2015 |
| Mango Commerce Services Norway AS | Professional & scientific | 2021 |
| Mango Norge AS | Wholesale & retail | 1998 |
| Mangonel Holding AS | | 2026 |
| Mangset AS | Information & communication | 2011 |
| Mangt AS | | 2024 |
| Manhalshandel AS | Hospitality | 2018 |
| Manheim AS | | 2012 |
| Manholt Holding AS | | 2005 |
| Mani Dent Tannlege Nazanin Morovatipour AS | Health & social care | 2024 |
| Mani Holding AS | Real estate | 2005 |
| Maniax Holding AS | | 2023 |
| Manic AS | | 2018 |
| Manicajo Holding AS | | 2026 |
| Manico AS | Information & communication | 2025 |
| Manifest AS | Hospitality | 2023 |
| Manifest Media AS | Information & communication | 2022 |
| Manifesto AS | Professional & scientific | 2011 |
| Manillusion AS | Wholesale & retail | 2016 |
| Manilu AS | Professional & scientific | 2023 |
| Manilva Invest AS | Real estate | 2006 |
| Maniphicos Holding AS | | 2021 |
| Manitu AS | Professional & scientific | 2006 |
| Mankan Da | Administrative & support | 1989 |
| Manki AS | Administrative & support | 2025 |
| Manna General Trading AS | Wholesale & retail | 2022 |
| Mannat AS | | 2023 |
| Mannatech Norge AS | Wholesale & retail | 2009 |
| Mannaudur AS | Professional & scientific | 2015 |
| Mannes AS | | 2023 |
| Manni Meieri AS | Manufacturing | 2024 |
| Mannoch AS | Real estate | 2000 |
| Mannskap AS | Administrative & support | 2018 |
| Manny Biir Invest AS | | 2024 |
| Mano Consult AS | Professional & scientific | 2005 |
| Mano Eiendom AS | Real estate | 2009 |
| Manoco AS | | 2021 |
| Manor Invest AS | Financial services | 2021 |
| Manousha AS | Hospitality | 2023 |
| Manov Designa AS | Construction | 2013 |
| Manov Global AS | Information & communication | 2013 |
| Manov Holding AS | Energy | 2017 |
| Manov Industry AS | Real estate | 2021 |
| Manov Skal Bare AS | Hospitality | 2026 |
| Manpower AS | Administrative & support | 1965 |
| Manpower Industri AS | Administrative & support | 2019 |
| Manpower Staffing Services AS | Administrative & support | 2000 |
| Manpowergroup AS | Administrative & support | 2003 |
| Mansfield AS | Professional & scientific | 2021 |
| Manskogen Ans | Agriculture & fishing | 1995 |
| Manta AI AS | Information & communication | 2025 |
| Manta AS | Financial services | 2005 |
| Manta Marine Technologies AS | Professional & scientific | 2010 |