| Mani&More AS | Sylling | 2026 |
| Manikyr Studio AS | Laksevåg | 2022 |
| Manke AS | Jessheim | 2021 |
| Manndalen Bil Og Karosseri AS | Samuelsberg | 2016 |
| Mano Frisør AS | Brekstad | 2022 |
| Manora Massasje AS | Drammen | 2022 |
| Mantra Beauty & Academy AS | Sandefjord | 2017 |
| Manu & Salutem AS | Tromsø | 2020 |
| Maoo AS | Tennfjord | 2021 |
| Maph Holding AS | Sandnes | 2024 |
| Maphia Beauty AS | Hauglandshella | 2025 |
| Marcel Frisør AS | Bergen | 2018 |
| Marcelo AS | Ålesund | 2015 |
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| Mardahl Verksted AS | Orkanger | 2003 |
| Maren Kvernmo Frisør AS | Hønefoss | 2022 |
| Maria Frisør AS | Narvik | 2018 |
| Maria Martinsen AS | Sørreisa | 2022 |
| Maria Skarning AS | Vesterøy | 2013 |
| Mariaangela | Manger | 2009 |
| Mariannes Salong AS | Sellebakk | 2017 |
| Marianne`S Hår, Fot Og Beauty Senter AS | Ås | 2026 |
| Marianns Hud Og Naturterapi AS | Straume | 2004 |
| Marias Klinikk AS | Kongsvinger | 2013 |
| Marias Velvære AS | Kristiansand S | 2012 |
| Mariela Frisør AS | Bodø | 2010 |
| Mariela Hunstad AS | Bodø | 2017 |
| Mariendal Bil AS | Rudshøgda | 2009 |
| Maries Salong Picasso AS | Søgne | 2019 |
| Marilyn & James AS | Haugesund | 2023 |
| Marin Detailing AS | Høvik | 2024 |
| Marina Frisør AS | Tønsberg | 2017 |
| Marina Jessica AS | Gressvik | 2023 |
| Marinas Hår Og Skjønnhet AS | Molde | 2014 |
| Marinemisjonen AS | Flekkerøy | 2020 |
| Maritim Badstuer Haugesund AS | Haugesund | 2023 |
| Maritimt Forum Nord SA | Narvik | 2011 |
| Marius Norheim Holding AS | Løvenstad | 2017 |
| Mariwan Invest AS | Moss | 2011 |
| Marken & Moe AS | Lindesnes | 2015 |
| Marken Invest Limited Nuf | Lillesand | 2005 |
| Marker Dekk Og Bilpleie AS | Ørje | 2021 |
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| Marren Båtforening | Hellvik | 2006 |
| MARRIAGE4LIFE Consulting AS | Oslo | 2026 |
| Marse Beauty AS | Heggedal | 2024 |
| Marshall Valdres AS | Fagernes | 2018 |
| Martemoen Påbygg AS | Skarnes | 2025 |
| Martes Hudpleie AS | Færvik | 2020 |
| Marth Frisør AS | Straume | 1991 |
| Marth Invest AS | Kolltveit | 2005 |
| Marthes Holding AS | Stjørdal | 2005 |
| Marthes Renseri AS | Stjørdal | 1991 |
| Marthinsen Bil & Lakk AS | Olderdalen | 2020 |
| Marthinsen Holding AS | Olderdalen | 2020 |
| Martine AS | Alta | 2023 |
| Martine Langseth Holding AS | Hammerfest | 2023 |
| Martines Fotterapi AS | Fyllingsdalen | 2014 |
| Martinsen Billakk AS | Romedal | 2009 |
| Martinsen Enterprice AS | Steinkjer | 2013 |
| Marwin Holding AS | Sauda | 2014 |
| Mary-Ann Hårdesign AS | Haugesund | 2012 |
| Maryann Risbøl AS | Harstad | 2022 |
| Marøy Frisør AS | Manger | 2020 |
| Masjid Al-Towhid | Brønnøysund | 2013 |
| Mask Frisør AS | Trondheim | 2020 |
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| Maskin & Bil AS | Marnardal | 2017 |
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| Maskin Og Motor AS | Verdal | 2010 |
| Massasje, Helse Og Skjønnhet AS | Kristiansand S | 2021 |
| Massasjekompaniet AS | Åsgårdstrand | 2017 |
| Massasjeterapeut Jani Pyykkö AS | Harstad | 2015 |
| Massasjeterapeut Siv Eilertsen AS | Harstad | 2019 |
| Massør Marianne Kristoffersen AS | Vannvåg | 2023 |
| Mast Frisør AS | Sjøvegan | 2017 |
| Master Bil AS | Arendal | 2018 |
| MASTERBARBERSHOP21 AS | Finnsnes | 2025 |
| Mat & Co Da | Sarpsborg | 2016 |
| Mat & Drikke Fra Innlandet SA | Øyer | 2024 |
| Matanina AS | Namsos | 2025 |
| Mathopen Kattepensjonat AS | Mathopen | 2025 |
| Matias Holding AS | Halden | 2022 |
| Matkollektivet SA | Trondheim | 2016 |
| Matrix Frisør AS | Asker | 2013 |
| Mauritz Eiendom AS | Mysen | 2005 |
| Mauritz Holding AS | Mysen | 2005 |
| Mauseidvåg Bil Og Båt AS | Mauseidvåg | 2015 |
| Maverik AS | Drammen | 2021 |
| Max Beauty AS | Bergen | 2016 |
| Max Bilshine Da | Oslo | 2001 |
| Max Milan Frisør AS | Bergen | 1991 |
| Maxam Tuning AS | Sarpsborg | 2008 |
| Maxcare AS | Stamsund | 2025 |
| Maxern Holding AS | Oslo | 2021 |
| Maxi Bilpleie Og Bilvask AS | Hamar | 2018 |