M
- M K Securities
- M P Agro Fertilisers
- M Ravji Oil Industries
- M S Shoes East
- M&T Bank Corporation
- M-Touch Finance
- M. Ward (musician)
- M.D.C. Holdings, Inc.
- M1 Rail
- M2 UltraLounge
- Maa Leafin and Capital
- Maars Software International
- Maasai Wilderness Conservation Trust
- Mac Charles (India)
- Mac Cosmetics
- MAC Industries
- Macalester College
- Macarthur Coal Ltd
- MacArthur Foundation
- Maccabi Electra Tel Aviv
- Maccabi Haifa B.C.
- Maccabi Haifa F.C.
- Macclesfield Town FC
- Machino Plastics
- Mack Trading Co
- Mackinac Center for Public Policy
- Mackinnon Mackenzie and Company
- Macmillan (Corporate)
- Macquarie Bank
- Macro International Exports
- Macromedia
- Mad Catz
- Mad Genius Software
- MAD Magazine
- Madalsa Agrotech
- Madame a Paris
- Made Her Think
- Madera Limpia
- Madhav Marbles and Granites
- Madhu Refoils & Chemicals
- Madhucon Projects
- Madhumilan Fincorp
- Madhumilan Syntex
- Madhur Capital and Finance
- Madhur Housing Finance
- Madhur Industries
- Madhusudan Industries
- Madhusudan Investments
- Madhya Desh Paper
- Madhyavart Exxoil
- Madi diaz
- Madras Aluminium
- Madras Aluminium Company
- Madras Cements
- Madras Fertilizers
- Madras Hi-Tech Circuits
- Madras Motor Finance & Guarantee Company
- Madras Motor Finance and Guaranty
- Madras Petro Chemicals
- Madredeus (musician)
- Maegaware Computers
- Maestros Mediline Systems
- Mafatlal Dyes and Chemicals
- Mafatlal Engineering Industries
- Mafatlal Finance Company
- Mafatlal Industries
- Magal Security Systems Ltd.
- Magan Industries
- Magazine Publishers of America
- MagCloud
- Magellan Health Services, Inc.
- Magico Exports
- Magicut Tools
- Magistrates Courts
- Magma Design Automation, Inc.
- Magma Fincorp
- Magmo The Destroyer
- Magna Electro Castings
- Magna Industries and Exports
- Magna International, Inc.
- Magnanimous Trade & Finance
- Magnetar Capital
- Magnetic Fields (musician)
- Magnetix (India)
- Magnolia Bakery, NY
- Magnum Fincap
- Magnum Photos
- Magnum Ventures
- Magnus Plastics
- Magnus Rubber Industries