| TRN | Ford Transit 
| Others |
| TRN | Quattro - Clarion Translation support file
| Others |
| TRN | Talk Radio Network
| Others |
| TRN | Target Ring Number
| Others |
| TRN | Task Requirement Notice
| Others |
| TRN | Tatra Register Nederland
| Others |
| TRN | Taxpayer Registration Number
| Others |
| TRN | Teacher Reference Number
| Others |
| TRN | Tech Resource Network
| Others |
| TRN | Technology Research News
| Others |
| TRN | Temporary Reality Number
| Others |
| TRN | Temporary Registration Number
| Others |
| TRN | The Racing Network
| Others |
| TRN | The Research Network
| Others |
| TRN | The Reserves Network
| Others |
| TRN | The Resource Network
| Others |
| TRN | The Robotech Network
| Others |
| TRN | Threaded Read News
| Others |
| TRN | Times Record News
| Others |
| TRN | Title Resource Network
| Others |
| TRN | Token Ring Network
| Others |
| TRN | Toms Robbing Numbers
| Others |
| TRN | Topic Reply Notification
| Others |
| TRN | Topology Representing Networks
| Others |
| TRN | Total Request Nsync
| Others |
| TRN | Touran
| Others |
| TRN | Training Resource Network
| Others |
| TRN | Transaction Reference Number
| Others |
| TRN | Translation Support File
| Others |
| TRN | Trofeo Rally Nazionale
| Others |
| TRN | Trunnion
| Others |
| TRN | Turin, Italy
| Others |