CIOR
| Acronym | Definition |
|---|---|
| CIOR | Confédération Interalliée des Officiers de Réserve |
| CIOR | Chief's Internal Organizational Review (Canada) |
| CIOR | Crew Irregular Operations Report (aviation) |
| CIOR | Centro de Investigaciones de Oriente (Guatemala) |
| CIOR | Cast-Iron Oval Roaster (cookware) |
| CIOR | Confidence Intervals of Odds Ratio |