| Petra Design Consulting Architects and Engineers | Construction |
| Petrofac Qatar | Industrial Manufacturing |
| Petrogold Trading & Contracting | Conglomerates |
| Petrogulf WLL | Industrial Manufacturing |
| Petroleum Technology Co. | Industrial Manufacturing |
| Petroserv Controls & Communications Company WLL | Construction |
| Petroserv Limited | Construction |
| PHIDIAS Projects & Construction W.L.L | Services |
| Phoenix International W.L.L. | Industrial Manufacturing |
| Pick Quick Limousine | Transport |
| Pipeline Supplies & Services Company W.L.L | Industrial Manufacturing |
| Platinum Business Technologies | Information Technology |
| Pledge Construction & Trading Agencies | Construction |
| Popular Electricals & Trading Company WLL | Industrial Manufacturing |
| Power 2 Group | Industrial Manufacturing |
| Power and Control Engineering and Trading Co | Power and Utilities |
| Power Engineering Corporation | Services |
| Power Links Qatar LLC | Industrial Manufacturing |
| Power Supply Trading & Contracting W.L.L | Construction |
| POWER WASTE MANAGEMENT & TRANSPORT CO WLL | Services |
| Powermech Engineering Company W.L.L | Construction |
| Precision Cellular Storage QSTP-LLC | Transport |
| Premadasa Colourscan W.L.L | Services |
| Premium Construction WLL | Construction |
| Prestige General Services | Services |
