| Mindalen Steinanlegg AS | Bø I Telemark | 2019 |
| Mindas AS | Hafrsfjord | 2024 |
| Minde Blikk AS | Nesttun | 2025 |
| Minde Håndverktjenester AS | Bø I Telemark | 2017 |
| Minde-S AS | Nittedal | 2025 |
| Mindor Berge AS | Fosnavåg | 1985 |
| Mindstate Solutions AS | Nøtterøy | 2019 |
| Minel Ainstall AS | Jaren | 2008 |
| Minel AS | Hamar | 1998 |
| Minel Drøbak Elektriske AS | Drøbak | 1998 |
| Minel Elmontasje AS | Hamar | 2006 |
| Minel Elmontasje Elverum AS | Elverum | 1998 |
| Minel Gjøvik AS | Gjøvik | 2003 |
| Minel Gudbrandsdal AS | Otta | 2004 |
| Minel Holding AS | Hamar | 2018 |
| Minel Kreativ Elektro Ski AS | Ski | 2009 |
| Minel Land Elektriske AS | Dokka | 1987 |
| Minel Skogvang Installasjon AS | Østre Gausdal | 1981 |
| Minh Rørleggerservice AS | Oslo | 2001 |
| Mini Bazar AS | Strømmen | 2013 |
| Mini Holding AS | Våler I Solør | 2018 |
| Mini Maskin AS | Stryn | 1994 |
| Mini Maskin Eiendom AS | Bønes | 2010 |
| Minianlegg AS | Sætre | 2014 |
| Minigolf Int Adrian Kurczyna Nuf | Pl-59-706 Gromedka | 2025 |
| Minigolf Int Dariusz Szykula Nuf | Pl-59-724 Osiecznica | 2025 |
| Minigravemaskiner AS | Notodden | 1997 |
| Minimaskin AS | Bønes | 1996 |
| Minimax Fire Solutions International GmbH | De-23843 Bad Oldesloe | 2019 |
| Minimax GmbH & Co. KG | Oslo | 2006 |
| Minixl AS | Stavanger | 2026 |
| Mink Holding AS | Tynset | 2020 |
| Minkhes AS | Kongsvinger | 2024 |
| Minnesund Utleie AS | Minnesund | 2025 |
| Minor Industriplast AS | Heimdal | 2014 |
| Minova Holding AS | Surnadal | 2025 |
| Minsa AS | Slemmestad | 2024 |
| Mioh AS | Oslo | 2020 |
| Mir Grave Og Drenering AS | Gullaug | 2024 |
| Mir Og Bek Da | Fredrikstad | 2021 |
| Mira Bygg AS | Øyer | 2016 |
| Mira Byggservice AS | Årnes | 2026 |
| Mira Invest AS | Nordby | 2024 |
| Miras Elektro AS | Mo I Rana | 2017 |
| Miribygg & Utleie AS | Hamnvik | 2018 |
| Mirka Solutions Nuf | Lt-15211 Vilniaus R | 2023 |
| Mirko Funk | Fyresdal | 2008 |
| Mirkos Ideal Construct SRL | Ro-Lok Cojasca | 2017 |
| Miron Bygg AS | Sandnes | 2024 |
| Miroslav Simak | 39173 P Hlavatce | 2013 |
| Miroslaw Polanski | 15-795 Bialystok | 2006 |
| Miroslaw Sikora | Pl-26-080 Mniow | 2008 |
| Mirota Bygg AS | Haugesund | 2024 |
| Mis - Moss Isolasjonsservice AS | Moss | 2000 |
| Mis-Bud Jan Michniak | Pl-34521 Zab | 2006 |
| Misami Nuf | Hr-32227 Borovo | 2023 |
| Mister Lda V/ Byrået I Son AS | Son | 2005 |
| Mister No Bygg AS | Oslo | 2021 |
| Misund Trevarefabrikk AS | Hamarøy | 2026 |
| Mitchell Holding AS | Skien | 2005 |
| Mitek Holding II AS | Gvarv | 2023 |
| Mithassel Ingeniør Og Rørleggerbedrift AS | Oslo | 1998 |
| Mito Entreprenør AS | Ankenes | 1998 |
| Mitobygg AS | Østre Gausdal | 2021 |
| Mitro Norge AS | Skjetten | 2022 |
| Mitt Bad AS | Sarpsborg | 2016 |
| Mitt Bygg AS | Greåker | 2019 |
| Mitt Tak AS | Sarpsborg | 2024 |
| Mittanbud Marketplaces AS | Oslo | 1998 |
| Miva AS | Ridabu | 2014 |
| Mivax Anlegg AS | Vikersund | 2025 |
| Mivent AS | Oslo | 2019 |
| Mivida Anlegg AS | Holmestrand | 2022 |
| Miviv D.O.O | Straume | 2011 |
| Mivo Vann Og Avløp AS | Ålesund | 2025 |
| Mix Bygg AS | Malmefjorden | 2017 |
| Miøsen AS | Ridabu | 2005 |
| Miøsen Boligbygg AS | Ilseng | 2010 |
| Miøsen Eiendom AS | Ridabu | 2017 |
| Miøsen Elektro AS | Ottestad | 2021 |
| Miøsen Teknikk AS | Ridabu | 2022 |
| MJ Anlegg AS | Fetsund | 2026 |
| MJ Bygg AS | Oslo | 2024 |
| MJ Bygg Service AS | Skogsvåg | 2020 |
| MJ Elektro AS | Oslo | 2012 |
| MJ Entreprenør AS | Lysøysundet | 2025 |
| MJ Flood Security Ltd | Dublin D22 V4F5 | 2024 |
| MJ Maskin AS | Grålum | 2018 |
| MJ Montage Mogens P Jakobsen | Dk-8500 Grenaa | 2013 |
| MJ Rørservice AS | Finnsnes | 2026 |
| MJ Service SP. Z O.O. Nuf | Pl-35-033 Rzeszow | 2025 |
| Mj-Byggservice AS | Fiskå | 2011 |
| Mj-Utvikling AS | Gibostad | 2015 |
| Mja Maler & Gulvbelegg AS | Kristiansand S | 1993 |
| Mjaaland Betongpumping AS | Saltrød | 2018 |
| Mjad Holding AS | Sande I Sunnfjord | 2013 |
| Mjelde Bygg Holding AS | Lonevåg | 2023 |
| Mjelde Maling AS | Morvik | 2021 |
| Mjelstad Bygg & Vedlikehold AS | Tysse | 2024 |
| Mjelstad Mur & Flis AS | Hylkje | 2019 |