| American School of Doha | Education |
| Amiantit Qatar Pipes Company | Industrial Manufacturing |
| Ammico Contracting Company W.L.L. | Construction |
| Ammico Contracting Company WLL Qatar | Conglomerates |
| AMTECH (Al Madaen Security systems) | Conglomerates |
| Amwaj Trading Establishment | Oil and Gas |
| Amwaj Catering Services Company Limited Q.S.C. | Food and Beverages |
| Amwaj Group | Transport |
| Amwal LLC | Financial Services |
| Apex Car Rental | Transport |
| Apollo Fleet WLL | Construction |
| APT Global Marine Services Co. W.L.L | Oil and Gas |
| Aptech Qatar Computer Education Centre | Education |
| AQAR Real Estates Development & Investment | Real Estate |
| Aqua Terra Middle East | Industrial Manufacturing |
| AR General Cool | Consumer Goods |
| Arab Bank - Qatar | Financial Services |
| Arab Center for Engineering Studies - Qatar | Construction |
| Arab Engineering Bureau | Construction |
| Arab Jordan Investment Bank (Qatar) L.L.C. | Financial Services |
| Arab Law Bureau LLP | Services |
| Arab Museum of Modern Art | Services |
| Arab Orient Insurance Brokers | Financial Services |
| Arab Qatari Company for Poultry Production | Agriculture |
| Arabi Company Qatar W.L.L. | Industrial Manufacturing |
