| Abbreviation | Definition |
|---|---|
| CIL | Component Integration Language |
| CILA | Cochin International Language Academy |
| CILLA | Center for Indigenous Languages of Latin America |
| CILO | Consortium of Indigenous Language Organizations |
| CILP | China Intensive Language Program |
| CILP | Chinese Intensive Language Program |
| CILT | Constraint Induced Language Therapy |
| CINAHL | Cumulated Index in Nursing and Allied Health Literature |
| CINAHL | Cumulated Index of Nursing and Allied Health Literature |
| CINAHL | Cumulative Index of Nursing and Allied Health Literature |
| CINAHL | Cumulative Index to Nursing Allied Health Literature |
| CISL | Common Intrusion Specification Language |
| CISW | Center For Interdisciplinary Studies Of Writing |
| CIWI | Connecting Independent Writers in Israel |
| CJLEA | Colorado Japanese Language Education Association (Colorado) |
| CJLS | Central Japanese Language School |
| CJML | Customer Journey Modelling Language |
| CLA | California Language Academy |
| CLA | Contributor License Agreement |
| CLA | Culture and Language Acquisition |