| Abbreviation | Definition |
|---|---|
| GYI | Global Youth Initiative |
| GYI | Global Youth Innitiative |
| GYI | Global Youth Institute |
| GYI | Global Youth Issues |
| GYIP | Global Youth Initiative For Peace |
| GYL | Greenwich Youth Lacrosse |
| GYLF | Gilmore Youth Leadership Forum |
| GYLI | Global Youth Leadership Initiative |
| GYLI | Global Youth Leadership Institute |
| GYLI | Gurnee Youth Leadership Initiative |
| GYLPAC | Gay Youth Leadership Political Action Committee |
| GYM | Gist your mom (insult) like when someone is bothering you just say gym |
| GYM | Godward Youth Ministry |
| GYN | Global Youth Networking |
| GYO | Gemini Youth Orchestras |
| GYO | Gilmanton Youth Organization |
| GYP | Global Youth Partners |
| GYP | Glocal Youth Parliament |
| GYS | Glencoe Youth Services |
| GYS | Global Youth Summit |