| Abbreviation | Definition |
|---|---|
| GLOCK | Glockenspiel |
| GLONG | Drum in Thailand |
| GLP | Gibson Les Paul |
| GM | General Music |
| GMA | Georgia Metal Alliance |
| GMA | Global Music Award |
| GMBA | Grenada Mas Band Association |
| GMC | Game Music Creator |
| GMC | Gospel Music Channel |
| GMC | Green Music Center |
| GMCLA | Gay Men's Chorus of Los Angeles |
| GMD | G Music Dance |
| GMD | Gaand Mein Danda |
| GMET | Gridded Meteorological Ensemble Tool |
| GMF | Gasparilla Music Festival |
| GMF | Gasparilla Music Foundation |
| GMF | Global Music Festival |
| GMF | Global Music Foundation |
| GMGM | Good Morning, Get Money! (DEAFPROOFBEATS) |
| GMGM | Good Morning, Good Morning (Beatles) |