| APET | abnormally patent eustachian tube | 咽鼓管异常开放（症） |
| APET | Association For Public Economic Theory | 公共经济理论协会 |
| APET | Avionics Post-mission Evaluation Team | 航空电子设备任务后评估小组 |
| APET | Australasian Perpetual Equity Trust | 澳大拉西亚永续股权信托 |
| APET | Amorphous Polyethylene Terephthalate | 无定形聚对苯二甲酸乙二醇酯 |
| APET | Amorphous Polyethylene Terephthlate | 无定形聚对苯二甲酸乙二醇酯 |
| APET | antiproliferating-endothelium therapy | 抗增殖内皮治疗 |
| APET | Advanced Practical English Teaching | 高级实用英语教学 |
| APET | Accident Progression Event Tree | 事故进展事件树 |
| APET | Algorithms Program Evaluation Tool | 算法程序评估工具 |
| APET | Adaptable Performance Evaluation Testbed | 适应性性能评估试验台 |