| Lake | County | Latitude | Longitude |
| Gaff Lake | Garden | 41.779901 | -102.388044 |
| Galdon Lake | Garden | 41.901182 | -102.128210 |
| Gallagher Lake | Dawson | 40.731933 | -99.979001 |
| Gaunt Lake | Sheridan | 42.018416 | -102.217461 |
| Gay Lake | Cherry | 42.876316 | -101.915142 |
| Gebauer Lake | Morrill | 41.682410 | -103.085318 |
| Gem Lake | Cherry | 42.431993 | -101.993775 |
| George Lake | Grant | 41.983381 | -101.836552 |
| Gillet Lake | Garden | 41.808215 | -102.410560 |
| Gimlet Lake | Garden | 41.756327 | -102.437013 |
| Granning Lake | Sheridan | 42.187814 | -102.124527 |
| Gregg Lake | Box Butte | 42.436209 | -103.294565 |
| Grove Lake | Antelope | 42.374243 | -98.116666 |
| Groves Lake | Garden | 41.882690 | -102.063149 |
| Grubny Lake | Morrill | 41.901810 | -102.733664 |
| Gus Lake | Cherry | 42.459219 | -100.628554 |