| Acronym | Definition |
|---|
| CIIR➣Center for Intelligent Information Retrieval |
| CIIR➣Catholic Institute for International Relations |
| CIIR➣Counterintelligence Information Report (US DoD) |
| CIIR➣China Institute of Industrial Relations (Beijing, China) |
| CIIR➣Chloro Isobutene Isoprene Rubber (polymer) |
| CIIR➣Canadian International Information Resource |