| Acronym | Meaning |
 | GPC | General-purpose Computer |
| GPCB | GOAL Program Control Block |
| GPD | Gimbal Position Display |
| GPH | Gallons Per Hour |
| GPI | Gimbal Position Indicator |
| GPI | Ground Position Indicator |
| GPL | General Purpose Laboratory |
| GPL | Goal Processing Language |
| GPM | Gallons Per Minute |
| GPME | General Purpose Mission Equipment |
| GPRN | GOAL Test Procedure Release Notice |
| GPS | Gallons Per Second |
| GPS | General Processing Subsystem |
| GPS | Global Positioning Satellite |
| GPS | Global Positioning System |
| GPS | Ground Power Supply |
| GPS | Ground Processing Simulation |
| GPSS | General Purpose System Simulator |
| GPTE | General Purpose Test Equipment |
| GPU | Ground Power Unit |
| GPUR | GOAL Test Procedure Update Request |
| GR | Ground R@le |
| GRE | Gamma Ray Explorer |
| GRID | Graphic Retrieval And Information Display |
| GRN | Green |
| GRO | Gamma Ray Observatory |
| GROUND | OperGround Operations Review Panel |
| GRTLS | Glide Return To Landing Site |
| GRTLS | Glide Return To Launch Site |
| GS | Gas Servicer |
| GS | Glide Slope |
| GS | Glide Slope |
| GS | Ground Speed |
| GS | Ground Station |
| GS | Ground System |
| GSA | General Services Administration |
| GSAT | General Satellite (STS) |
| GSCU | Ground Service Cooling Unit |
| GSDL | Ground Software Development Laboratory |
| GSE | Ground Servicing Equipment |
| GSE | Ground Support Equipment |
| GSE | Ground Support Equipment |
| GSEL | Ground Support Equipment List |
| GSFC | Goddard Space Flight Center (Greenbelt |
| GSFC | Goddard Space Flight Center |
| GSI | Glide Slope Indicator |
| GSI | Glide Slope Indicator |
| GSI | Government Source Inspection |
| GSIU | Ground Standard Interface Unit |
| GSO | Ground Support Office |
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