GTIS
| Acronym | Definition |
|---|---|
| GTIS | Global Trade Information Services |
| GTIS | Government Telecommunications and Informatics Services (Canada) |
| GTIS | Gene Technology Information Service (Australia) |
| GTIS | Gifted and Talented Independent Study (Texas Education Agency) |
| GTIS | GOES Tap Imaging System |
| GTIS | Government Technical Information Services (Canada) |