| IWPP | Inclusive Workplace Partners Program 
| Others |
| IWPP | Independent Water and Power Plant
| Others |
| IWPP | Independent Water and Power Producer
| Others |
| IWPP | Independent Water and Power Project
| Others |
| IWPP | Independent Water Power Project
| Others |
| IWPP | Industrial Waste Pollution Prevention
| Others |
| IWPP | Integrated Water and Power Plant
| Others |
| IWPP | Integrated Watershed Planning Process
| Others |
| IWPP | International Wedding Planning Professionals
| Others |
| IWPP | International Workshops on Public Policy
| Others |
| IWPP | Irregular Wavefront Propagation Pattern
| Others |
| IWPP | Irrigation Water Physical Productivity
| Others |