| PIAP | Printing Industries Association of the Philippines | 菲律宾印刷工业协会 |
| PIAP | Program Improvement and Accountability Plan | 项目改进和责任计划 |
| PIAP | Performance and Improvement and Accountability Plan | 绩效、改进和责任计划 |
| PIAP | Poogy In A Pitah | 皮塔里的小熊 |
| PIAP | pre-infarction angina pectoris | 梗死前心绞痛 |
| PIAP | Pesticides Incidents Appraisal Panel (United Kingdom) | 农药事故评估小组（联合王国） |
| PIAP | Post Inspection Action Plan (UK schools) | 检查后行动计划（英国学校） |
| PIAP | Project Identification, Appraisal and Prioritisation | 项目识别、评估和优先级 |
| PIAP | Public Internet Access Point | 公共Internet接入点 |
| PIAP | Peas In A Pod | 豆荚里的豌豆 |
| PIAP | Police Information Assessment Process | 警察信息评估流程 |