| Abbreviation | Definition |
|---|---|
| GHA | Graduate History Association |
| GHA | Gulf Heart Association |
| GHA | Gypsy Horse Association |
| GHHBA | Greater Hattiesburg Home Builders Association (Mississippi) |
| GHHJA | Greater Houston Hunter-Jumper Association (equestrianism) |
| GHIA | Greek Health Informatics Association |
| GHJA | Georgia Hunter Jumper Association |
| GHRA | Greater Houston Retailers Association |
| GHRA | Guyana Human Rights Association |
| GHSA | Golden Heart Softball Association |
| GHTA | Georgia Hospitality Travel Association |
| GHTA | Gift and Home Trade Association |
| GHTA | Great Harbour Trawler Association |
| GHTA | Grenada Hotel and Tourism Association |
| GIAA | Greater Iowa Apartment Association |
| GIAB | General Insurance Association of Barbados |
| GIADA | Georgia Independent Auto Dealer Association |
| GIADA | Georgia Independent Auto Dealers Association |
| GIANTS | Greater Independent Association of National Travel Services |
| GIBA | Ghana Independent Broadcasters Association |