| Acronym | Definition |
|---|
| CGSI➣Czechoslovak Genealogical Society International (St. Paul, Minnesota) |
| CGSI➣Consumer Guidance Society of India |
| CGSI➣Comitato Giovani Sordi Italiani (Italian: Committee for Young Deaf Italians) |
| CGSI➣Championship Golf Services, Inc. (California) |
| CGSI➣Ciena Government Solutions, Inc. (Linthicum, MD) |
| CGSI➣Cable Group South, Inc. (Delaware) |