| Mhatre Engineers & Inspektion AS | Stavanger | 2017 |
| Mhauk AS | Spikkestad | 2022 |
| MHC Consult AS | Tyristrand | 2021 |
| Mhe Holding AS | Tolvsrød | 2015 |
| Mhei Holding AS | Fornebu | 2023 |
| Mhes Holding AS | Drammen | 2005 |
| Mhint Arkitektur AS | Tønsberg | 2020 |
| Mhj-Konsulent Og Prosjektledelse AS | Oslo | 2015 |
| Mhjohannessen AS | Drammen | 2007 |
| MHK AS | Oslo | 2018 |
| MHR AS | Risør | 2021 |
| MHR Regnskap AS | Oslo | 2007 |
| MHS Arkitektur & Design AS | Stavanger | 2020 |
| Mhtech AS | Moss | 2016 |
| MHW Invest AS | Fornebu | 2021 |
| Mi Arkitektur + Design AS, Maria Ibarra Sivilarkitekt Mnal | Drammen | 2014 |
| Mi Consulting AS | Snarøya | 2017 |
| Mi Services AS | Sandefjord | 2017 |
| Mi Solutions AS | Nedenes | 2025 |
| Mia Didriksen | Se-43952 Åsa | 2025 |
| Mia Øvregaten AS | Oslo | 2016 |
| Miam Food AS | Mjøndalen | 2022 |
| Miamo AS | Oslo | 2024 |
| Miau Katteklinikk Og Kattehotell AS | Sandnes | 2025 |
| Miavi AS | Bergen | 2014 |
| Miavi Management AS | Bergen | 2025 |
| Mib International Ltd | Gb-Coventry Cv1 2Jz | 2018 |
| Mica Capital AS | Oslo | 2013 |
| Miccol AS | Nesodden | 2019 |
| Michael Colin Hill | Aberdeen Ab15 4An Scotland | 2011 |
| Michael Eber Markedsføring | 85540 Haar | 2013 |
| Michael Mcgarvey Cementing Ltd | Falkirk Fk1 1Hz Scotland | 2020 |
| Michael Olsen & Partnere Nuf | Dk-2730 Herlev | 2024 |
| Michael Production AB Nuf | 907 52 Umeå | 2025 |
| Michaela Koob | 66629 Freisen | 2019 |
| Michal Szypulski | Pl-81603 Gdyunia | 2018 |
| Michel Green Energy Consulting AS | Norheimsund | 2017 |
| Michel Invest AS | Kristiansand S | 1982 |
| Michelet Consult AS | Oslo | 2010 |
| Michelle Holding AS | Vikeså | 2012 |
| Michelle Sæther Holding AS | Bønes | 2019 |
| Michelsen Consulting Services AS | Råholt | 2023 |
| Michiko AS | Paradis | 2005 |
| Micim International Limited Nuf | D01 Wp22, Dublin 1 | 2025 |
| Mickes Mediastudio AS | Oslo | 2014 |
| Micofresh AS | Tønsberg | 2025 |
| Micos Analyse Og Rådgivning AS | Lørenskog | 2013 |
| Micri Support Norge | Dk-8400 Ebeltoft | 2020 |
| Micro Biostrat AS | Oslo | 2023 |
| Microa Bioactives AS | Tananger | 2022 |
| Microc | Se-37332 Nättraby | 2018 |
| Microchip Technology Norway AS | Trondheim | 2002 |
| Microclean AS | Tranøy | 2018 |
| Microdac Nuf | Porsgrunn | 2012 |
| Micromar AS | Averøy | 1986 |
| Micronax AS | Trondheim | 2008 |
| Microphix AS | Oslo | 2025 |
| Microplex AS | Drøbak | 2018 |
| Microsafe AS | Sæbøvik | 2012 |
| Microsystem AS | Nittedal | 2022 |
| Mid-As | Haugesund | 2010 |
| MID4S Økonomi AS | Sandsli | 2019 |
| Midas Capital AS | Oslo | 2016 |
| Midas Group AS | Oslo | 2005 |
| Midas Reference AS | Oslo | 2008 |
| Midbø Økonomi AS | Oslo | 2026 |
| Midconsult AS | Stjørdal | 2007 |
| Midd AS | Tananger | 2025 |
| Middelstand AS | Oslo | 2023 |
| Midelfart Analytics AS | Oslo | 2025 |
| Midgard Regnskap AS | Tau | 1997 |
| Midgardstrategy AS | Oslo | 2024 |
| Midinette AS | Fornebu | 2014 |
| Midling-Hansen Holding AS | Årnes | 2020 |
| Midnattssol Bærekraft Og Strategi Rådgivning AS | Strønstad | 2019 |
| Midnight Productions AS | Oslo | 2005 |
| Midos AS | Oslo | 2007 |
| Midre AS | Lommedalen | 2021 |
| Midroc Management AB | Se-169 03 Solna | 2016 |
| Midroc Project Management AB | 169 03 Sona | 2014 |
| Midsale Consulting AB Nuf | Se-781 71 Borlänge | 2026 |
| Midt Finnmark Dyreklinikk AS | Lakselv | 2023 |
| Midt I Mjøsa SA | Stavsjø | 2007 |
| Midt Norge Datareklame Ans | Støren | 1994 |
| Midt Norsk Regnskapsforum AS | Tiller | 1985 |
| Midt Norsk Rørinspeksjon AS | Levanger | 2023 |
| Midt Norsk Ventilasjon AS | Sandnessjøen | 1998 |
| Midt Økonomi AS | Verdal | 2026 |
| Midt-Norge Industrirøntgen AS | Hagan | 1985 |
| Midt-Norge Takst AS | Trondheim | 2005 |
| Midt-Norsk Montasje AS | Heimdal | 2017 |
| Midt-Telemark Og Nome Utvikling AS | Bø I Telemark | 2003 |
| Midt-Telemark Regnskap AS | Bø I Telemark | 2005 |
| Midt-Troms Revisjon AS | Finnsnes | 2003 |
| Midtbyen Regnskap AS | Trondheim | 1987 |
| Midtechnology AS | Tønsberg | 1998 |
| Midtfylket Dyrlegekontor AS | Skotselv | 2013 |
| Midtfylket Invest AS | Skotselv | 2020 |
| Midtgaard Regnskap AS | Oslo | 2022 |
| Midtgard Aviation AS | Sandefjord | 2026 |