| Acronym | Definition |
|---|
| TRN➣Toronto (airport code; Toronto, Canada) |
| TRN➣Transport |
| TRN➣Total Return Net (finance) |
| TRN➣Train |
| TRN➣Transaction |
| TRN➣Technology Research News |
| TRN➣Times Record News (Wichita Falls, TX) |
| TRN➣Taxpayer Registration Number (Jamaica) |
| TRN➣Talk Radio Network |
| TRN➣Turnaround |
| TRN➣Teaching-Research Nexus |
| TRN➣Transparent |
| TRN➣Threaded Read News |
| TRN➣Terminal |
| TRN➣Translation Support File |
| TRN➣Transaction Reference Number |
| TRN➣Treasury Reserve Note (US Treasury) |
| TRN➣Transports Régionaux Neuchâtelois (French; Swiss public transport company) |
| TRN➣Trade Name |
| TRN➣Token Ring Network |
| TRN➣Tax Research Network (UK) |
| TRN➣Titre de Reconnaissance de la Nation (French: Full Recognition of the Nation) |
| TRN➣Transcriptional Regulatory Network |
| TRN➣Temporary Routing Number (telecommunications) |
| TRN➣Training Resource Network, Inc |
| TRN➣Transit Routing Number |
| TRN➣Turin, Italy - Caselle (Airport Code) |
| TRN➣Topology Representing Network |
| TRN➣Terrain-Reference Navigation |
| TRN➣The Radio Network Ltd (New Zealand) |
| TRN➣Transition Register |
| TRN➣Transaction Register |
| TRN➣Training Document (TMINS) |
| TRN➣Target Reference Number |
| TRN➣Task Requirement Notice |
| TRN➣Trashy Romance Novel |
| TRN➣Team Rally Nasjonal (Norwegian) |
| TRN➣The Rader Network (Colorado Springs, Colorado, USA) |
| TRN➣Travel Record Number |
| TRN➣The Revellee Nation (non profit organization) |