| Abbreviation | Definition |
|---|---|
| CIM | California Institution for Men |
| CIM | Canadian Institute of Mining |
| CIMA | Caribbean Institute for Missions Advancement |
| CIMA | Chartered Institute of Management Accountants |
| CIMAP | Central Institute of Medicinal Aromatic Plants |
| CIMI | Catalina Island Marine Institute |
| CIMI | Chicago Institute for the Moving Image |
| CIML | Chartered Institute of Management and Leadership |
| CIMMYT | Centro Internacional de Mejoramiento de Maíz y Trigo (in Spanish) International Maize and Wheat Improvement Centre |
| CIMRS | Cooperative Institute for Marine Resource Studies |
| CIMS | California Institute of Medical Science |
| CIMS | Care Institute of Medical Sciences |
| CIMS | Chhattisgarh Institute of Medical Sciences |
| CIMS | Cobalt Institute of Math and Science |
| CIMS | Courant Institute of Mathematical Sciences |
| CIMSS | Cooperative Institute for Meteorological Satellite Studies |
| CIMT | Colorado Institute of Massage Therapy |
| CINA | Clinical Institute Narcotic Assessment |
| CINAR | Cooperative Institute for the North Atlantic Region |
| CINDE | Canadian Institute for Non destructive Evaluation |