GMST
| Acronym | Definition |
|---|---|
| GMST | Greenwich Mean Sidereal Time |
| GMST | Global Mean Surface Temperature (ecology) |
| GMST | Global Maplestory Tespia (gaming) |
| GMST | Game Setting |
| GMST | General Military Subjects Test |
| GMST | Genov Modified Stroop Test |
| GMST | Geometric Mean Survival Time (transplantation medicine) |