| Abbreviation | Definition |
|---|---|
| GSO | Piedmont Triad International Airport, Greensboro/High Point/Winston-Salem, North Carolina USA |
| GSP | Greenville/Spartanburg International Airport, Greenville/Spartanburg, South Carolina USA |
| GSR | Gardo, Somalia |
| GSS | Sabi Sabi, South Africa |
| GST | Gustavus Airport, Gustavus, Alaska USA |
| GSU | Gedaref, Sudan |
| GSVO | Dakhla (Villa Cisneros), Occidental Sahara |
| GSW | American Airlines Flight Academy, Greater SouthWest Airport, Fort Worth, Texas USA |
| GSY | Grimsby, England, UK |
| GTB | Genting, Malaysia |
| GTC | Green Turtle, Bahamas |
| GTE | Groote Eylandt, Northern Territory, Australia |
| GTF | Great Falls International Airport, Great Falls, Montana USA |
| GTK | Sungei Tekai, Malaysia |
| GTN | Glentan, Mount Cook, New Zealand |
| GTO | Gorontalo, Indonesia |
| GTP | Golden Triangle Regional Airport, Columbus, Mississippi USA |
| GTS | Granites, Northern Territory, Australia |
| GTW | Zlin, Czechoslovakia |
| GTY | Gettysburg, Pennsylvania, USA |