| KTC International Company | Industrial Manufacturing |
| La Cigale Hotel | Leisure and Tourism |
| La Varenne | Food and Beverages |
| Laconstructa Group for Contracting | Construction |
| Lalive in Qatar LLC | Services |
| Landmark Mall | Real Estate |
| Lans Global Logistics | Transport |
| Lavenir Consultants | Construction |
| LC Lusail Consultants | Construction |
| Leaders Advertising and Marketing WLL | Services |
| Leasecon Trading & Contracting | Conglomerates |
| Lexus Engineering & Contracting Company | Construction |
| Libra Trdg. Co | Conglomerates |
| Life style cleaning and maintenance | Services |
| Lighting Solutions | Services |
| Lightning for Electrical & Mechanical Works W.L.L. | Construction |
| Links Shipping Company W.L.L. | Transport |
| LION INTERNATIONAL MIDDLE EAST WLL | Industrial Manufacturing |
| Logic Group of Companies | Conglomerates |
| Loons Group WLL | Telecommunications |
| Lotus Trading & Contracting Company | Construction |
| Lotus Travels & Tours | Leisure and Tourism |
| LuLu Center Trading Co. | Retail |
| Lumatron Qatar W.L.L | Industrial Manufacturing |
| Lusail Real Estate Development Company W.L.L. | Real Estate |
