| Abbreviation | Definition |
|---|---|
| FWI | Families and Work Institute |
| FYFI | FIGHT YOUR FIGHT Institute |
| FYI | Family and Youth Institute |
| FYI | Fuller Youth Institute |
| FYIP | First Year Institute Program |
| FZIA | First Zen Institute of America |
| GABI | Global America Business Institute |
| GAI | Game Art Institute |
| GAI | Germanic American Institute |
| GALI | Gillette Area Leadership Institute |
| GALI | Global American Language Institute |
| GARI | Gulf Archaeology Research Institute |
| GATI | Gender Advancement for Transforming Institutions |
| GATI | Graduate Assistant Teaching Institute |
| GBCI | Green Bay Correctional Institution |
| GBDI | Global Business Development Institute |
| GBI | Global Business Institute |
| GBI | Great Basin Institute |
| GBI | Green Building Institute |
| GBPI | Georgia Budget & Policy Institute |