| ECPP | Early California Population Project 
| Others |
| ECPP | Early Childhood Program Participation
| Others |
| ECPP | Effective Core Polarization Potential
| Others |
| ECPP | Efficient Conditional Privacy Preservation
| Others |
| ECPP | Egyptian Congress Of Pediatric Pulmonology
| Others |
| ECPP | Elliptic Curve Primality Proof
| Others |
| ECPP | Elliptic Curve Primality Proving
| Others |
| ECPP | Elliptic Curves and Primality Proving
| Others |
| ECPP | Environmental Communication and Participatory Processes
| Others |
| ECPP | Environmental Crime Prevention Program
| Others |
| ECPP | Estero Community Planning Panel
| Others |
| ECPP | European Coalition of Positive People
| Others |
| ECPP | European Confederation of Psychoanalytic Psychotherapies
| Others |
| ECPP | European Conference of Positive Psychology
| Others |
| ECPP | European Conference on Positive Psychology
| Others |
| ECPP | Europejskie Centrum Pomocy Poszkodowanym
| Others |