| CREI | Center for Research Education and Innovation 
| Others |
| CREI | Centre de Recerca en Economia Internacional
| Others |
| CREI | Centre de Recherche sur les Environnements Intelligents
| Others |
| CREI | Certificate of Reproductive Endocrinology and Infertility
| Others |
| CREI | Chicago Real Estate Institute
| Others |
| CREI | Cost Reduction Effectiveness Improvement
| Others |
| CREI | riscaldatori elettrici industriali
| Others |