| Extension | 描述 | 檔案格式 |
|---|
| gab | Global Address Book File | 資料檔 |
| gadget | Sidebar Gadget File | 聲音檔案 |
| gam | Saved Game File | 遊戲檔案 |
| game | Apple Chess Save Game File | 遊戲檔案 |
| gar | Waypoint Data File | Misc Files |
| gb | Pagefox Bitmap Image File | 圖檔 |
| gba | Game Boy Advance ROM File | 遊戲檔案 |
| gbc | GameBoy Colour ROM Image File | 遊戲檔案 |
| gbi | gBurner Image File | 磁碟映像檔 |
| gbp | gBurner Projeckt File | Misc Files |
| gcd | Global CD Disk Image File | 磁碟映像檔 |
| gcf | Steam Cache File | 遊戲檔案 |
| gcm | Gamecube Image File | 磁碟映像檔 |
| gdb | Borland Interbase Database Files | 資料檔 |
| gdf | 3D Move Geological File | 3D Files |
| ged | Gedcom File | Misc Files |
| gen | ARC/INFO UnGenerate File | Geographical Files |
| gfd | GE Form File | Layout Files |
| gg | Google Desktop Gadget file | Misc Files |
| ggb | GeoGebra Document File | Misc Files |
| gho | Norton Ghost Backup File | 備份檔案 |
| ghs | Ghost Spanned Disk File | 備份檔案 |
| gi | RecordNow Image File | 磁碟映像檔 |
| gid | Windows Help Index File | Misc Files |
| gif | Graphics Interchange Format | 圖檔 |
| gml | Geography Markup Language File | Geographical Files |
| gp3 | Guitar Pro 3 Tablature File | 資料檔 |
| gp4 | Guitar Pro 4 Tablature File | 聲音檔案 |
| gp5 | Guitar Pro 5 Tablature File | 聲音檔案 |
| gpd | Graphic PhotoDefiner Image File | 圖檔 |
| gpi | Garmin Point Of Interest File | Geographical Files |
| gpx | GPS Exchange Format File | Geographical Files |
| grb | T-Flex CAD File | CAD Files |
| grf | Micrografix Image File | 圖檔 |
| grle | Farming Simulator Saved Game File | 遊戲檔案 |
| gro | Serious Sam Game File | 遊戲檔案 |
| group | Windows Group File | Misc Files |
| groups | WebMoney Group File | 資料檔 |
| gsf | Ghost Script Font File | 字型檔案 |
| gsp | Geometers Sketchpad Document File | Misc Files |
| gtp | Gnome Desktop Theme File | Misc Files |
| gxt | GTA Resource File | 遊戲檔案 |
| gz | GNU Zipped Archive File | 壓縮檔案 |
| gzip | GNU Zip Compressed File | 壓縮檔案 |