| Abbreviation | Definition |
|---|---|
| CVI | Cancer Vaccine Institute |
| CVI | Collegiate and Vocational Institute |
| CVI | Complete Vocal Institute |
| CVI | Counter Violence Institute |
| CVIT | Cobre Valley Institute of Technology |
| CVTI | Canadian Vessel Training Institute |
| CVTI | Cheale Vocational Training Institute |
| CWCI | California Workers Compensation Institute |
| CWEI | Child Welfare Education Institute |
| CWI | Civil War Institute |
| CWI | Coastal Watershed Institute |
| CWI | Colorado Water Institute |
| CWI | Community Works Institute |
| CWMI | Chartered Wealth Manager Institute |
| CWSI | Caribbean Writers Summer Institute |
| CWSI | Cranfield Water Science Institute |
| CYI | Cape York Institute |
| CYI | Caregiving Youth Institute |
| CYRI | Child and Youth Research Institute |
| CZBA | Canal Zone Biological Area (now Smithsonian Tropical Research Institute) |