| Maples Safety & Industrial Solutions WLL Qatar | Construction |
| Maples Safety & Industrial Solutions WLL Qatar | Construction |
| Marafeq Qatar Company | Power and Utilities |
| Marafeq Qatar Company | Power and Utilities |
| Marbu Contracting Company W.L.L. | Construction |
| Marbu Contracting Company W.L.L. | Construction |
| Marriott Marquis City Center Doha Hotel | Leisure and Tourism |
| Marriott Marquis City Center Doha Hotel | Leisure and Tourism |
| Mars Trading & Contracting Company | Consumer Goods |
| Mars Trading & Contracting Company | Consumer Goods |
| Marshal Shipping & Logistics | Transport |
| Marshal Shipping & Logistics | Transport |
| Marubeni | Power and Utilities |
| Marubeni | Power and Utilities |
| MASA Group Qatar | Conglomerates |
| MASA Group Qatar | Conglomerates |
| Masa Lifts | Industrial Manufacturing |
| Masa Lifts | Industrial Manufacturing |
| Masraf Al Rayan (Q.P.S.C.) | Financial Services |
| Masraf Al Rayan (Q.P.S.C.) | Financial Services |
| Massoun Insurance Services L.L.C. | Financial Services |
| Massoun Insurance Services L.L.C. | Financial Services |
| Master Consultant Engineers | Construction |
| Master Consultant Engineers | Construction |
| Matrix International Contracting Company W.L.L. | Services |
