| CIED | Cardiac Implantable Electronic Device/Pacemaker 
| Others |
| CIED | Cardiac Implantable Electronic Devices
| Others |
| CIED | Cardiovascular Implantable Electronic Device
| Others |
| CIED | Center for Innovation and Economic Development
| Others |
| CIED | Center for Innovation and Entrepreneurial Development
| Others |
| CIED | Center for Intercultural Education and Development
| Others |
| CIED | Centre on Innovation and Energy Demand
| Others |
| CIED | Chickahominy Indians Eastern Division
| Others |
| CIED | Counter IED
| Others |
| CIED | Counter Improvised Explosive Device
| Others |
| CIED | Counter Improvised Explosive Devices
| Others |