| Abbreviation | Definition |
|---|---|
| GC | Giga Cycle |
| GC | Grade Change |
| GC | Grade Compensation |
| GC | Gyroscopic Compass |
| GCCE | Graduate Certificate in Counselor Education |
| GCE | Graduate Certificate of Education |
| GCPA | Graduate Certificate in Professional Accounting |
| GCSE | General Certificate of Secondary Education |
| GCTE | Graduate Certificate in Tertiary Education |
| GD | Geographic Database |
| GD | Geologic Data |
| GD | Geologic Document |
| GD | Giga Disc |
| GDEP | Graduate Diploma of Editing and Publishing |
| GDIP | Graduate Diploma In Philosophy |
| GDMC | Graduate Diploma in Mass Communication |
| GDP | General Data Proccessor |
| GDRD | Graduate Diploma in Rural Development |
| GDS | Grosses Deutsches Sprachdiplom |
| GE | General beverage |