| Acronym | Definition |
|---|
| GCY➣Global Citizen Year |
| GCY➣Growth Control, Y-Chromosome Influenced |
| GCY➣Greensboro Community YMCA (Young Men's Christian Association; est. 1889; Greensboro, NC) |
| GCY➣Golf Club Ybrig (Switzerland) |
| GCY➣German-Canadian Yearbook (publication; Historical Society of Mecklenburg Upper Canada) |
| GCY➣Grupo Cultural Yuyachkani (Spanish: Yuyachkani Cultural Group; Peru) |
| GCY➣Gold Coast Yachts, Inc. (US Virgin Islands) |