| Acronym | Definition |
|---|
| CIIA | Canadian Institute for International Affairs |
| CIIA | Critical Infrastructure Information Act of 2002 |
| CIIA | Certified International Investment Analyst |
| CIIA | Commission Internationale des Industries Agricoles et Alimentaires (French: International Commission of Agricultural and Food Industries) |
| CIIA | Comisión Internacional de las Industrias Agrícolas y Alimentarias (Spanish) |
| CIIA | California Internet Industry Alliance |
| CIIA | Christmas Island Internet Administration Ltd |
| CIIA | Construction Industry Institute Australia, Inc. (Brisbane, Queensland, Australia) |