| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 381 | Glendyn | Gaelic | Valley. | M | |
| 382 | Glenn | Gaelic | Derived from the Gaelic 'gleana', meaning valley. Used both as a surname and given name. Famous bearer: Canadian actor Glenn Ford. | M | |
| 383 | Glynn | Gaelic | Valley. | M | |
| 384 | Godfrey | Gaelic | God's peace. | M | |
| 385 | Goraidh | Gaelic | God's peace. | M | |
| 386 | Gordain | Gaelic | Hero. | M | |
| 387 | Gordan | Gaelic | Hero. | M | |
| 388 | Gorman | Gaelic | Little blue eyed one. | M | |
| 389 | Gow | Gaelic | A smith. | M | |
| 390 | Gradey | Gaelic | Noble. | M | |
| 391 | Grady | Gaelic | Noble. | M | |
| 392 | Guin | Gaelic | Blond. | M | |
| 393 | Guthrie | Gaelic | Free wind. | M | |
| 394 | Gyles | Gaelic | Servant. | M | |
| 395 | Hagan | Gaelic | Young. | M | |
| 396 | Hogan | Gaelic | Young. | M | |
| 397 | Hurlee | Gaelic | Tide. | M | |
| 398 | Hurley | Gaelic | Tide. | M | |
| 399 | Hurly | Gaelic | Tide. | M | |
| 400 | Iain | Gaelic | Gaelic form of John. | M | |