| Acronym | Definition |
|---|
| ICAO➣International Civil Aviation Organization |
| ICAO➣Institute of Chartered Accountants of Ontario |
| ICAO➣Instructions for Continued Airworthiness |
| ICAO➣Improvements and Collision Avoidance (conference) |
| ICAO➣Industrial Claim Appeals Office (Colorado Department of Labor and Employment) |
| ICAO➣Iranian Community Association of Ontario (Canada) |