| Abbreviation | Definition |
|---|---|
| GMF | CGM graphics (APPLAUSE) |
| GMP | Geomorph tile Map (SPX) |
| GNA | Genigraphics Graphics Link presentation |
| GNAF | Geocoded National Address File |
| GNT | Generated code (Micro Focus COBOL/2) |
| GNX | Genigraphics Graphics Link presentation |
| GO | Bitmap graphics (GraphOn graphics file) |
| GOBJ | Object code (non-error-checking version) (Geoworks) |
| GOC | GOC language source code file (Geoworks) |
| GOE | Satellite image data (GOES file) (McIDAS system) |
| GOES | Satellite image data - GOES file |
| GOH | Goc language header file (Geoworks) |
| GOULD | Bitmap graphics (Gould scanner file) |
| GP | Geode parameter file (Geoworks) |
| GP | Glue Geode Parameter file |
| GP | Gofer project (Haskell language dialect) |
| GP | Gofer Project file |
| GP4 | GTX Group IV format |
| GPF | Global Pet File |
| GPH | Lotus 1-2-3 Graph file |