GCTI
| Acronym | Definition |
|---|---|
| GCTI | Grupo Central de Transportes Internos (Portuguese: Central Inland Transport Group; Brazil) |
| GCTI | Genesys Telecommunications Laboratories Inc (stock symbol) |
| GCTI | Gestion Coordination de Travaux Immobiliers (French plumbing company) |
| GCTI | Government Central Textile Institute (India) |
| GCTI | Global Change Technology Initiative |