| Abbreviation | Definition |
|---|---|
| GDA | Gimbal Drive Actuator |
| GDBS | Generalized DataBase System |
| GDC | General Dynamics Convair |
| GDC | Gyro Display Coupler |
| GDCF/PACOR | Program Generic Data Capture Facility / Packet Processor |
| GDCLS | General Dynamics Commercial Launch Services |
| GDFC | Goddard Space Flight Center |
| GDP | Generalized Documentation Processor |
| GDS | GNC (Guidance and Navigation Computer) Dynamic Simulator |
| GDS | Goldstone, California (Spaceflight Tracking and Data Network site) |
| GDS | Ground Data System |
| GDSCC | Goldstone Deep Space Communications Complex |
| GDSD | Ground Data Systems Division |
| GDSIRD | Ground Data System Information Requirements Document |
| GDSM | Ground Data Systems Manager |
| GDSO | Ground Data Systems Officer |
| GDSSR | GDSD (Ground Data Systems Division) Staff Support Room |
| GDX | Goldstone, California (Spaceflight Tracking and Data Network site, 2nd Antenna) |
| GE | General Electric |
| GECALL | GCOS (Ground Computer Operating System) program Element procedure Call |