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| Moving Mamas AS | Oslo | 2015 |
| Moxie Skjønnhet AS | Verdal | 2019 |
| MPS Bilskade AS | Oslo | 2004 |
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| MPS Bilskade Fornebu AS | Fornebu | 2019 |
| MPS Bilskade Haugesund AS | Karmsund | 2016 |
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| MR. Krystal AS | Froland | 2025 |
| MR. Phone AS | Skien | 2026 |
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| Mr.Carwash Bilpleie Og Bilvask AS | Stange | 2024 |
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| MRB Group AS | Sortland | 2021 |
| Mrpl Company AS | Stjørdal | 2023 |
| MRS Chira AS | Porsgrunn | 2018 |
| MRV AS | Fauske | 2022 |
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| MS Frisør AS | Melhus | 2023 |
| MS. Tattoosunni AS | Herdla | 2025 |
| Ms/Mr AS | Sandnes | 2019 |
| Mservice AS | Snåsa | 2025 |
| MSM Norway | Oslo | 2019 |
| MSR Frisør AS | Sandvika | 2026 |
| Mstyle Frisør AS | Kongsvinger | 2021 |
| MT Bil Da | Skjeberg | 2006 |
| MTL AS | Flekkerøy | 2018 |
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| Muha Frisør AS | Rykkinn | 2025 |
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| Multi-Service AS | Oslo | 1995 |
| Multiassistanse AS | Skien | 2023 |
| Multicare AS | Vøyenenga | 2000 |
| Multigroomers A/S | Kvinesdal | 2016 |
| Multilakk AS | Klepp Stasjon | 2006 |
| Multimarked AS | Kvaløya | 2020 |
| Multimech Og Marine AS | Longyearbyen | 2025 |
| Multiservice Gjemnes AS | Batnfjordsøra | 2020 |
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| Multistyle Konsult Norge AS | Fjellhamar | 2023 |
| Multitec AS | Blystadlia | 2023 |
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| MV Studio AS | Sandefjord | 2017 |
| Mverksted AS | Beitstad | 2016 |
| MVT Gruppen AS | Hommelvik | 2023 |
| MVT Malvik AS | Hommelvik | 2023 |
| MVT Rudshøgda AS | Rudshøgda | 2025 |
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| MVT Våler AS | Braskereidfoss | 2024 |
| My Beauty & Health AS | Trondheim | 2022 |
| My Skin AS | Son | 2019 |
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| Myke Poter Hundesalong AS | Oslo | 2024 |
| Mymechanic AS | Tiller | 2025 |
| Mymechanic Verksted AS | Tiller | 2025 |
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| Myra Haircare AS | Arendal | 2019 |
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| Myrtels AS | Ålesund | 2019 |
| Myrvang Service AS | Storvik | 2021 |
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| Mysen Motorcenter AS | Mysen | 2019 |
| Mysenregionen AS | Mysen | 1998 |
| Mysun Øst AS | Sande I Vestfold | 2012 |
| Mytiske Telemark SA | Flatdal | 2018 |
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| Måløy Byforening AS | Måløy | 2020 |
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