| Meg Kan Du Leie AS | Kløfta | 2018 |
| Meg Og Kammeraten Min AS | Oslo | 2018 |
| Mega - El OY | 04250 Kerava | 2011 |
| Mega Holding Ltd | Stavanger | 2006 |
| Megazone Holding AS | Oslo | 2017 |
| Megleragent AS | Oslo | 2026 |
| Meglerfri AS | Bosberg | 2026 |
| Meglerstøtte AS | Oslo | 2022 |
| Mehrwerk AS | Sandvika | 1986 |
| Mehs Holding AS | Åkrehamn | 2008 |
| Mehus Multiservice AS | Grendi | 2021 |
| Mei Community AS | Tromsø | 2025 |
| Meidel Eiendom Og Drift AS | Oslo | 2007 |
| Meieriveien AS | Bjugn | 2026 |
| Meirbruk AS | Uggdal | 2022 |
| Mek AS | Mittet | 2016 |
| MEKK ANS Per Gunnar Andersen og Per Kjartan Huse | Kristiansand S | 1990 |
| Meko Norge AS | Sandefjord | 2020 |
| Mekong Event AS | Askim | 2026 |
| Mel Service AS | Kristiansand S | 2025 |
| Melby Drift Og Maskinutleie AS | Skjetten | 2007 |
| Meldal Hytte Og Transportservice Da | Storås | 2006 |
| Meldal Hytteservice Ans | Meldal | 2003 |
| Melderskin Holding AS | Sunde I Sunnhordland | 2018 |
| Melease AS | Nesbru | 1993 |
| Melhus Bygdeservice SA | Lundamo | 2021 |
| Melhus På Breen AS | Brårud | 2017 |
| Melhus Regnskapslag SA | Melhus | 1953 |
| Melhus Utleie Og Vaktmester AS | Melhus | 2018 |
| Melhus Vaktmesterservice AS | Trondheim | 1997 |
| Melhus Vaktmesterservice II AS | Trondheim | 2019 |
| Melia Engineering PLC | Liverpool L25 7Ye | 1998 |
| Meling Montasje AS | Talgje | 2014 |
| Melisa Renholdsservice AS | Oslo | 2008 |
| Melius Nordic AS | Oslo | 2018 |
| Melkild Og Berg Multiservice Ans | Grøa | 1996 |
| Melodi Planet Da | Skedsmokorset | 2012 |
| Melrose AS | Stavanger | 2022 |
| Melsomvik Holding AS | Ski | 2014 |
| Meltemi AS | Oslo | 2026 |
| Meltwater Sweden AB | Se-111 45 Stockholm | 2011 |
| Meløy Adventure AS | Glomfjord | 2016 |
| Meløy Skjærgårdsferie AS | Meløy | 1995 |
| Memb Holding AS | Fana | 2024 |
| Memb Service AS | Fana | 2024 |
| Membran, Blikk & Vaktmestertjenester AS | Skiptvet | 2014 |
| Memeco Recuitment Norpol Pte Ltd | 188979 Singapore | 2010 |
| Memopeople AS | Oslo | 2024 |
| Memory Spot AS | Nesttun | 2026 |
| Menck Pte Ltd Nuf | Sg-637036 Singapore | 2024 |
| Mente Projects AS | Oslo | 2024 |
| Mento Rental AS | Tananger | 1993 |
| Mentra AS | Oslo | 2025 |
| Mentu Holding AS | Oslo | 2018 |
| Meny AS | Oslo | 1996 |
| Meosen Rotlag SA | Skage I Namdalen | 2001 |
| Mer Utvikling AS | Oslo | 2023 |
| Mer Vedlikehold AS | Oslo | 2026 |
| Mercator Crewing Pte. Ltd | 118479 Singapore | 2025 |
| Mercator Crewing Holding AS | Haugesund | 2020 |
| Mercator Crewing I AS | Haugesund | 2021 |
| Mercator Crewing Inc. | Lr-1000 Monrovia | 2019 |
| Mercator Services AS | Haugesund | 2020 |
| Mercator Services II AS | Haugesund | 2022 |
| Mercator Services III AS | Haugesund | 2025 |
| Mercenarius Bemanning & Kompetanse AS | Bodø | 2024 |
| Merchant Brokers AS | Hønefoss | 2013 |
| Merck Sharp & Dohme Romania SRL | Ro-013704 Bucuresti | 2024 |
| Mercuria Energy Trading Nordic AS | Oslo | 2010 |
| Mercurienne AS | Drøbak | 2004 |
| Merefolk AS | Kopervik | 2018 |
| Mereo AS | Grimstad | 2001 |
| Meride AS | Trondheim | 1998 |
| Meridian Nordic Ltd Nuf | Fredrikstad | 2006 |
| Merk Norge AS | Oslo | 2014 |
| Merk Renhold AS | Vinterbro | 2016 |
| Merkantil Og Regnskapsteknisk Service a Harstad & Co | Oslo | 1982 |
| Merkantilia Nord AB Nuf | Se-411 29 Gøteborg | 2015 |
| Merli Invest AS | Løken | 2024 |
| Merlo | Tromsø | 2008 |
| Mero Investor AS | Nodeland | 2015 |
| Mero Nordic AS | Ytre Arna | 2011 |
| Meråker Bygdeservice SA | Meråker | 2005 |
| Meskano Kompetanse AS | Tynset | 2024 |
| Messe & Invest Da | Fjell | 2005 |
| Messeevent AS | Buvika | 2020 |
| Messeforum AS | Vestby | 2025 |
| Messelager AS | Sandnes | 2025 |
| Messelys AS | Skedsmokorset | 2020 |
| Messereiser AS | Trollåsen | 2014 |
| Messetjeneste AS | Bærums Verk | 1982 |
| Messeutstyr AS | Stavanger | 2017 |
| Mesterbygg Utleie AS | Hafslundsøy | 2024 |
| Mesterlaget AS | Oslo | 2014 |
| Mesterlandskap AS | Trondheim | 2023 |
| Mesterlandskap Holding AS | Klæbu | 2023 |
| Mesterlys AS | Lillestrøm | 1994 |
| Mestringsgården AS | Svelgen | 2015 |
| Mesu Solutions AS | Fyllingsdalen | 2026 |
| Meta Entreprenør AS | Løten | 2024 |