| JAIN | Java Advanced Intelligent Network | Java高级智能网 |
| JAIN | Japan Academic Inter-university Network (was JUNET) | 日本学术大学间网络（曾是JUNET） |
| JAIN | Java Advanced Intelligent Networks (Sun) | Java高级智能网络（Sun） |
| JAIN | Justice, Affection, Introspection, Nobility | 正义、情感、反省、高尚 |
| JAIN | Java APIs for Integrated Networks | 用于集成网络的Java API |
| JAIN | Java for Advanced Intelligent Networks | 用于高级智能网络的Java |