| Misnas Saad Almisnas Trad. & Transport | Services |
| Modern Trends Training & Consultancy | Education |
| Mohamed Yousuf Kafood & Sons Trading & Contracting Company | Industrial Manufacturing |
| Moka & Company | Food and Beverages |
| Mona Trading & Machinery | Industrial Manufacturing |
| Monsoon Trading and Contracting WLL | Conglomerates |
| Morgen Middle East Trading & Contracting | Conglomerates |
| Morison Menon Chartered Accountants and Partners LLC | Financial Services |
| Mosaic Contracting Company | Construction |
| Mowasalat Co. | Transport |
| Msheireb Properties | Real Estate |
| Multicon Trading | Conglomerates |
| Musandum International General Trading and Contracting (L.L.C) | Construction |
| Mutli Services Company Qatar | Information Technology |
| MZ & Partners | Construction |
| Nabina Trading Establishment | Industrial Manufacturing |
| Nakilat Agency Company Limited (Q.S.C.) | Transport |
| Nakilat Damen Shipyards Qatar Limited | Transport |
| Nakilat Svitzerwijsmuller WLL | Transport |
| Nakilat-Keppel Offshore & Marine Limited | Industrial Manufacturing |
| Nasco Qatar L.L.C | Financial Services |
| Nasir Bin Abdullah and Sons Group | Consumer Goods |
| Nasser Bin Khaled & Sons Projects Promotion Company WLL | Health Care |
| Nasser Bin Khaled Al Thani & Sons Holding Company | Transport |
| Nasser Bin Khaled Automobiles | Transport |
