| PQI | Pagina Quacchera Italiana 
| Others |
| PQI | Paint Quality Institute
| Others |
| PQI | Paint Quality, Inc.
| Others |
| PQI | Patent Quality Initiative
| Others |
| PQI | Pavement Quality Index
| Others |
| PQI | Performance and Quality Improvement
| Others |
| PQI | Performance Quality Inspection
| Others |
| PQI | Picture Quality Index
| Others |
| PQI | Pittsburgh Quantum Institute
| Others |
| PQI | Placement Quality Index
| Others |
| PQI | Potential Quality Issue
| Others |
| PQI | Power Quality International
| Others |
| PQI | Power Quality, Inc.
| Others |
| PQI | Power Quotient International
| Others |
| PQI | Practice Quality Improvement
| Others |
| PQI | Predictive Quantities Indicator
| Others |
| PQI | Preliminary Quality Inspection
| Others |
| PQI | Presque Isle, Maine USA
| Others |
| PQI | Prevention Quality Indicators
| Others |
| PQI | Printer Queue Initialization
| Others |
| PQI | Process Quaity Index
| Others |
| PQI | Product Quality Improvement
| Others |
| PQI | Productivity Quality, Inc.
| Others |
| PQI | Program Quality Index
| Others |
| PQI | Project Quality Index
| Others |
| PQI | Propellant Quantity Indicator
| Others |
| PQI | Proteome Quality Index
| Others |