| NPTU | Number of Production-Type Uses | 生产类型使用数量 |
| NPTU | Nuclear Power Training Unit | 原子能训练小队 |
| NPTU | Naval Propulsion Training Unit | 海军推进训练部队 |
| NPTU | Navy Prototype Training Unit | 海军原型训练部队 |
| NPTU | National Pingtung Technology University (Taiwan, China) | 台湾屏东科技大学（中国台湾） |
| NPTU | Nuclear Propulsion Training Unit | 核推进训练股 |
| NPTU | Nuclear Prototype Training Unit | 核原型训练单元 |
| NPTU | Neptune Leasing Incorporated | 海王星租赁公司 |