| Abbreviation | Definition |
|---|---|
| GSSM | Graduate School of Systems Management |
| GSSN | Gloucester School Sports Network |
| GSSO | Glasgow Schools Symphony Orchestra |
| GSSO | Government Secondary School Owerri |
| GSSP | Graduate School Scholarship Programme |
| GSSR | Graduate School for Social Research |
| GSST | Golden State School of Theology |
| GSST | Governor's School for Science and Technology |
| GSST | Graduate School of Science and Technology |
| GSTJ | Global School of Tech Juris |
| GSTR | Graduate Schools Technology Resources |
| GSTS | Ghana Secondary Technical School |
| GSTS | Graduate School of Technical Sciences |
| GSTS | Graduate School Tuition Scholarship |
| GTES | Gulf Trace Elementary School |
| GTHS | Gymea Technology High School |
| GTI | Galway Technical Institute (Galway, IE) |
| GTMS | Galloway Township Middle School |
| GTMS | Georgie D Tyler Middle School |
| GTMS | Georgie Tyler Middle School |