| Readymix Qatar L.L.C | Industrial Manufacturing |
| Real Estate Services Group | Real Estate |
| Red Wings Trading Construction & Services Co LLC | Construction |
| Redco Construction - Almana | Construction |
| Redco Group W.L.L. | Industrial Manufacturing |
| Redx Qatar Trading Contracting & Transport | Conglomerates |
| Refrigeration World WLL | Industrial Manufacturing |
| Regal Industrial Suppliers Company W.L.L | Industrial Manufacturing |
| Regency Group Holding | Real Estate |
| Regency Holidays WLL | Leisure and Tourism |
| Regency Pools and Landscaping | Services |
| Regency Travel & Tours WLL | Leisure and Tourism |
| Reliance Hydraulics & Oil Field Supplies WLL | Industrial Manufacturing |
| RICH TRADING QATAR WLL | Oil and Gas |
| Rider Glass Company | Industrial Manufacturing |
| Rightway Freight Services Co WLL | Transport |
| Rise Enterprise | Financial Services |
| Robust Trading & Contracting Company WLL | Services |
| Rocket Construction WLL Qatar | Construction |
| Roots Qatar W.L.L. | Conglomerates |
| Routedge WLL | Information Technology |
| Royal Plaza Doha | Conglomerates |
| Rumaillah Construction LLC | Conglomerates |
| Rumaillah Construction WLL | Construction |
| Rumaillah Group Holding W.L.L | Services |
