DIRO
| Acronym | Definition |
|---|---|
| DIRO | Direction Interdépartementale des Routes Ouest (French: Interdepartmental Directorate of Roads West) |
| DIRO | Departement d'Informatique et de Recherche Operationnelle |
| DIRO | Director's Office (US DARPA) |
| DIRO | District Industrial Relations Officer (now District Labor Relations Office) |