GTTB
| Acronym | Definition |
|---|---|
| GTTB | Go to The Beach (Florida) |
| GTTB | Get to the Bag |
| GTTB | Gene Therapy and Therapeutics Branch (National Institute of Dental and Craniofacial Research; US NIH) |
| GTTB | Gee That's Too Bad |
| GTTB | Good Time to Buy |
| GTTB | Give to the Bit (horse training) |