| Madai Limited | Information & communication | 2010 |
| Madcat Creations Ltd | Wholesale & retail | 2018 |
| Maddy Films Ltd | Information & communication | 2013 |
| Made by Savage Limited | Professional & scientific | 2022 |
| Made With Love by Karis Ltd | Manufacturing | 2019 |
| Madem Properties Limited | Real estate | 2024 |
| Maeg Technology Co., Ltd. | Wholesale & retail | 2018 |
| Magarstar Technology Co., Ltd | Wholesale & retail | 2020 |
| Magchem Trading Co., Ltd | Manufacturing | 2022 |
| Magicabu Limited | Professional & scientific | 2020 |
| Magicare Industrial Company Limited | Extraterritorial | 2017 |
| Magicrop Limited | Agriculture & fishing | 2020 |
| Magision Limited | Extraterritorial | 2025 |
| Maglong International Co., Ltd | Wholesale & retail | 2015 |
| Magna Fitout Limited | Construction | 2025 |
| Magnesium&Calcium Minerals Ltd | Extraterritorial | 2021 |
| Magnet Recruitment Limited | Administrative & support | 2021 |
| Magneti Fabricadora DE Pecas Limited | Extraterritorial | 2014 |
| Magnificent Dynamics Ltd | Information & communication | 2021 |
| Magntek Electronics Limited | Manufacturing | 2024 |
| Magocare Company Limited | Extraterritorial | 2021 |
| Magtrans Industrial Co., Ltd | Extraterritorial | 2013 |
| Maherster Ltd | Professional & scientific | 2010 |
| Mahoo Management Limited | Extraterritorial | 2015 |
| Mahut Properties Limited | Construction | 2017 |
| Maia GP I LLP | | 2020 |
| Maia Propco I LLP | | 2020 |
| Maia Propco II LLP | | 2020 |
| Maia Propco III LLP | | 2021 |
| Maia Propco IV LLP | | 2022 |
| Maia Propco V LLP | | 2023 |
| Maia RE LP | | 2020 |
| Maias Technology Limited | Professional & scientific | 2024 |
| Maiasi Publishing Ltd | Information & communication | 2025 |
| Maibeth Gardens Management Company Limited | Real estate | 2010 |
| Maidenbeck Limited | Real estate | 2017 |
| Main New Energy Co., Ltd | Extraterritorial | 2021 |
| Maisel Word Co., Ltd | Extraterritorial | 2019 |
| Maisheng Machinery Mould Co., Ltd | Extraterritorial | 2021 |
| Maison Sherif Limited | Health & social care | 2025 |
| Maitaouna International Chemical Industry Group Ltd | Extraterritorial | 2024 |
| Maitu International Import and Export Co., Ltd. | Manufacturing | 2026 |
| Maji Financial Wellbeing Ltd | Information & communication | 2019 |
| Maker Interiors Ltd | Manufacturing | 2008 |
| Makia Ltd | Administrative & support | 2023 |
| Maks Trade Ltd. | Extraterritorial | 2013 |
| Malaroni's Kitchen Limited | Hospitality | 2019 |
| Malbec Restaurants Limited | Hospitality | 2017 |
| Malbrite Ltd | Administrative & support | 2018 |
| Malcy Limited | Wholesale & retail | 2020 |
| Maleperduis Limited | Information & communication | 2013 |
| Malinka Delicatessen Ltd | Hospitality | 2007 |
| Malory Close Ltd | Households | 2003 |
| Malos Trading Limited | Wholesale & retail | 2026 |
| Malumais Investments Limited | Hospitality | 2025 |
| Mamcipe Construction Limited | Construction | 2025 |
| Mamie Collective Holdings Ltd | Hospitality | 2026 |
| Mamie Collective Operations 1 Ltd | Hospitality | 2026 |
| Mamour Electronics Co., Ltd | Extraterritorial | 2015 |
| Management Plus Hotels Limited | Hospitality | 2009 |
| Mancy Spray (UK) Shares Limited | Extraterritorial | 2015 |
| Mandy Auto Parts Co., Ltd | Extraterritorial | 2019 |
| Manel (Hilton) Co., Ltd | Manufacturing | 2020 |
| Mango Bay Ltd | Hospitality | 2019 |
| Mangocat Technology Ltd | Extraterritorial | 2021 |
| Mangors International Co., Limited | Extraterritorial | 2023 |
| Mann Island Media Limited | Information & communication | 2010 |
| Mano Brava Ltd | Other services | 2025 |
| Manon House Limited | Real estate | 2010 |
| Manseadon Industrial Co., Limited | Administrative & support | 2021 |
| Manson Technologies Group Co., Ltd. | Extraterritorial | 2019 |
| Manta RAY Makes Limited | Manufacturing | 2016 |
| Manyplotter Co., Limited | Extraterritorial | 2021 |
| Maotoogas Limited | Manufacturing | 2024 |
| Mapcrypto Limited | Information & communication | 2025 |
| Maple Industry Limited | Wholesale & retail | 2025 |
| Maplewood Visuals Limited | Administrative & support | 2025 |
| MAR Housing Ltd | Real estate | 2025 |
| Marblefloor Limited | Real estate | 2000 |
| Marc Cross Branding Ltd | Professional & scientific | 2025 |
| Marcarol International Co., Ltd | Extraterritorial | 2019 |
| Marconi Radio Communications Ltd | Wholesale & retail | 2021 |
| Marconoronha Ltd | Wholesale & retail | 2026 |
| Marcos Pizza MIA Ltd | Hospitality | 2025 |
| Maridco Media Limited | Arts & recreation | 2017 |
| Marine Corrosion Service Limited | Extraterritorial | 2018 |
| Marineforest Technology Ltd | Extraterritorial | 2025 |
| Marjon Builders Limited | Construction | 1997 |
| Mark Thompson Hris Consulting Ltd | Information & communication | 2024 |
| Marker Group UK Limited | Professional & scientific | 2026 |
| Marketcolor Limited | Information & communication | 2012 |
| Markham Bros Property Services TMH Ltd | Real estate | 2019 |
| Markham Bros Property TMH Ltd | Real estate | 2019 |
| Markham Bros TMH Limited | Wholesale & retail | 2020 |
| Marlboro (Swiss) Industry Limited | Extraterritorial | 2013 |
| Marlon Louis Security Ltd | Administrative & support | 2024 |
| Marona Construction Ltd | Construction | 2024 |
| Marquard Properties Ltd | Hospitality | 2011 |
| Mars Flavors PTE Ltd | Extraterritorial | 2021 |
| Mars Tape Co., Ltd | Extraterritorial | 2012 |