| Acronym | Definition |
|---|
| GCST➣Gulf Coast Swim Team (California) |
| GCST➣Glycine Cleavage System T protein |
| GCST➣Global Climate Science Team (ExxonMobil; est. 1998) |
| GCST➣Grants and Contracts Service Team (US Department of Education) |
| GCST➣Gibson-Cooke Sweat Test (cystic fibrosis diagnosis) |
| GCST➣Guzman College of Science and Technology (Manila, Philippines) |