| MPET | Maximal Permissible Exposure Time | 最大允许暴露时间 |
| MPET | Master of Professional Education and Training | 专业教育与培训硕士 |
| MPET | Measurement/Performance Evaluation Tool | 测量/绩效评估工具 |
| MPET | Metallized Polyethylene Terephthalate | 金属化聚对苯二甲酸乙二醇酯 |
| MPET | Magellan Petroleum Corporation | 麦哲伦石油公司 |