| Abbreviation | Definition |
|---|---|
| GPEG | Government Procurement Experts' Group |
| GPEI | Global Polio Eradication Initiative |
| GPG | Grant Proposal Guide |
| GPHIN | Global Public Health Intelligence Network |
| GPLN | Global Polio Laboratory Network |
| GPO | General post office |
| GPO | General Purpose Outputs |
| GPO | Government Post Office |
| GPO | Government Printing Office |
| GPO | Government Printing Office (U.S.) |
| GPR | General Purpose Revenues |
| GPR | Government Performance Review |
| GPSC | Geospatial Product and Service Contracts |
| GQ | Generational Qualifier |
| GR | General Register |
| GR | Gift Recipient |
| GR&R | Gauge Reproducibility And Repeatability |
| GRADE | Grading of Recommendations Assessment, Development and Evaluation |
| GRADE | grading of recommendations assessment, development, and evaluation |
| GRaDER | Graduated Radioactive/Nuclear Detector Evaluation and Reporting |