| Acronym | Definition |
|---|
| GTSB➣GM (Genetically Modified) Glyphosate-Tolerant Soya Bean |
| GTSB➣Greater Toronto Services Board (est. 1998; Toronto, Ontario, Canada) |
| GTSB➣Governor's Traffic Safety Bureau (Iowa) |
| GTSB➣Generalized Tangential Sphere Bound |
| GTSB➣Gigaspeed Technology Sdn. Bhd. (Selangor, Malaysia) |
| GTSB➣Glucose Teepol Salt Broth |