DIRN
| Acronym | Definition |
|---|---|
| DIRN | Direction Interdépartementale des Routes Nord (French: Interdepartmental Directorate of Roads North) |
| DIRN | Defined Interstate Rail Network (Australia) |
| DIRN | Directory Number (VoIP network) |
| DIRN | Digital Interaction Research Network (Umeå University; Sweden) |
| DIRN | Dispensational International Research Network (theology) |