| Acronym | Definition |
|---|
| GCNA➣Germ Cell Nuclear Antigen (genes) |
| GCNA➣Guild of Carillonneurs in North America |
| GCNA➣Guarantee Company of North America (est. 1872; Canada) |
| GCNA➣Greater Cleveland Nurses Association (Cleveland, OH) |
| GCNA➣Galère Club Nautique Auvernier (Swiss sailing club) |
| GCNA➣Grenada Cooperative Nutmeg Association |
| GCNA➣Groupes de Compagnies Nomades d'Algérie (French: Groups of Nomadic Companies of Algeria) |
| GCNA➣Gloucestershire County Netball Association (est. 1956; UK) |
| GCNA➣Golden City Netball Association (Australia) |