RIRO
| Acronym | Definition |
|---|---|
| RIRO | Run in Run Out (logo) |
| RIRO | Random In Random Out |
| RIRO | Right In, Right Out (intersection) |
| RIRO | Rubbish In Rubbish Out |
| RIRO | Respiration Induced Resonance Offset |
| RIRO | Repairable Item Replacement Option (US Navy) |
| RIRO | Repair Item Replacement Option |