| Acronym | Definition |
|---|
| CRO | Chief Risk Officer (corporate title) |
| CRO | Contract Research Organization (aka Clinical Research Organization) |
| CRO | Croatia |
| CRO | Clinical Research Organization (Pharmaceutical/Regulatory) |
| CRO | Cathode-Ray Oscilloscope (electronic test instrument) |
| CRO | Centre Régional de l'Occasion (French: Regional Center of Opportunity) |
| CRO | Companies Registration Office (Ireland) |
| CRO | Chapter Relations Office (American Library Associations) |
| CRO | Combat Rescue Officer (US Air Force) |
| CRO | Chief Restructuring Officer (corporate title) |
| CRO | Conversion Rate Optimization |
| CRO | Community Reuse Organization (various locations) |
| CRO | Chief Revenue Officer |
| CRO | Center for Radiation Oncology (Brandon, FL) |
| CRO | Chief Research Officer (corporate title) |
| CRO | Cave Rescue Organisation (UK) |
| CRO | Control Room Operator |
| CRO | Community Relations Office |
| CRO | Crisis Response Operations |
| CRO | Criminal Records Office |
| CRO | Central Reservation Office (shipping) |
| CRO | Click Rate Optimization |
| CRO | Club Race Officer (sailing certification) |
| CRO | Central Regional Office |
| CRO | Chief Range Officer |
| CRO | Customer Relationship Officer |
| CRO | Community Resource Officer |
| CRO | County Records Office (UK) |
| CRO | Commonwealth Relations Office |
| CRO | Central Records Office |
| CRO | Chemical Release Observation (three satellites: CRO-A, -B and -C; Strategic Defense Initiative Organization) |
| CRO | Church-Related Organization |
| CRO | Combinatoire et Recherche Opérationnelle (French: Combinatorics and Operations Research) |
| CRO | Complaints Resolution Officer (Australia) |
| CRO | Creole/Creole (language) |
| CRO | Classique Rallye Organisation (French car club) |
| CRO | Clinical Research Officer |
| CRO | Columbia Recovery Office |
| CRO | COMSEC Responsible Officer |
| CRO | Change of Reporting Official |
| CRO | Civil Rights Officer |
| CRO | Character Read Out |
| CRO | Congressional Relations Officer |
| CRO | Continuity Recheck Outgoing (ITU-T) |
| CRO | Complete with Related Order |
| CRO | Component Repair and Overhaul (engineering) |
| CRO | Cetos Research Organization (Bar Harbor, ME) |
| CRO | Colorado Recorder Orchestra |
| CRO | Cathode Ray Oscilloscope/Oscillograph |
| CRO | Cognizant Regional Office |
| CRO | Community Redevelopment Office |
| CRO | Collection and Recycling Organisation |
| CRO | Canceling Returns Only |
| CRO | Creative Roleplaying Organization (live action roleplaying games) |
| CRO | Continuous Reliable Operation |
| CRO | Community Reuse Program |
| CRO | Clock Reference Oscillator (AT&T) |
| CRO | Cancel Rerouted Overflow |
| CRO | Criterion Reference Objective |
| CRO | Codice di Riferimento dell'Operazione (Italian: bank money transfer) |
| CRO | Creative Rescue Organization (Chicago, IL) |
| CRO | Contractor Repair Only |
| CRO | Channel Replenishment Operations (Hewlett-Packard) |
| CRO | Cheque Requisition Order |
| CRO | CINC's Requirements Office (JBC) |
| CRO | Combat Replenishment Operations |
| CRO | Container Release Order (international shipping) |
| CRO | Command Reporting Organization |
| CRO | Customer Resolution Officer |