| Abbreviation | Definition |
|---|---|
| CHRI | Cottage Health Research Institute |
| CHRIE | Council on Hotel Restaurant and Institution Education |
| CHTI | Central Hindi Training Institute |
| CI | Canadian Institute, the |
| CI | Cebrowski Institute |
| CI | Churchill Institution |
| CI | Construction Institute |
| CI | Credit Institutions |
| CIA | Cleveland Institute of Art |
| CIA | Culinary Institute of America |
| CIAD | Costume Institute of the African Diaspora |
| CIAE | Central Institute of Agricultural Engineering |
| CIAE | China Institute of Atomic Energy |
| CIAH | Central Institute for Arid Horticulture |
| CIAJ | Canadian Institute for the Administration of Justice |
| CIAM | California Institute of Advanced Management |
| CIAM | Creatnet Institute of Applied Management |
| CIAMS | Cornell Institute of Archaeology and Material Studies |
| CIAPR | Cambridge Institute for Applied Psychology Religion |
| CIAR | Canadian Institute for Advanced Research |