HCGS
| Acronym | Definition |
|---|---|
| HCGS | Hubbard Center for Genome Studies (est. 2001; University of New Hampshire) |
| HCGS | Henry County Genealogical Services (Indiana) |
| HCGS | Helpful Critical Guy Syndrome (Scott Adams) |
| HCGS | Hope Creek Generating Station |
| HCGS | Harrison County Genealogical Society (Woodbine, IA) |
| HCGS | Highlands County Genealogical Society (Florida) |