| 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 |