| Acronym | Definition |
|---|
| GMB | Good Morning Britain (TV show; UK) |
| GMB | Gambia (ISO country code) |
| GMB | General Motors do Brasil |
| GMB | Good Morning, Beautiful (Todd Cobery film) |
| GMB | Gold Medal Bodies (Mill Creek, WA) |
| GMB | General Monitor Board |
| GMB | Global Memory Block |
| GMB | Grain Marketing Board |
| GMB | Global Market Briefings (est. 2004) |
| GMB | British Trade Union (originally General Municipal Boilermakers; now known simply as GMB) |
| GMB | Group Mailbox |
| GMB | Giving My Best |
| GMB | Global Medical Brigades (health care mission) |
| GMB | Get Money Boys (music group) |
| GMB | Group Managing Board |
| GMB | Green Manning & Bunch, Ltd. (Denver, CO) |
| GMB | Girls Meet Boys |
| GMB | Gastric Mucosal Barrier |
| GMB | Grandmaster B |
| GMB | Glass Micro Balloon |
| GMB | Give Me Beats |
| GMB | Goal Mouth Block (soccer; goalie save) |
| GMB | Grupa Mojego Brata (Polish band) |