| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 461 | Gall | Gaelic | Stranger. | M | |
| 462 | Gallagher | Gaelic | Eager helper. | M | |
| 463 | Gallgaidheal | Gaelic | Of the strange Gauls. | M | |
| 464 | Galloway | Gaelic | Of the strange Gauls. | M | |
| 465 | Galvin | Gaelic | White. | M | |
| 466 | Galway | Gaelic | Of the strange Gauls. | M | |
| 467 | Galyn | Gaelic | Tranquil. | M | |
| 468 | Gannie | Gaelic | Fair skinned. | M | |
| 469 | Gannon | Gaelic | Fair skinned. | M | |
| 470 | Gaothaire | Gaelic | Free wind. | M | |
| 471 | Garbhach | Gaelic | Rough. | M | |
| 472 | Garbhan | Gaelic | Rough. | M | |
| 473 | Garvey | Gaelic | Rough. | M | |
| 474 | Gaylen | Gaelic | Tranquil. | M | |
| 475 | Gayner | Gaelic | Son of the blond man. | M | |
| 476 | Gaynor | Gaelic | Son of the blond man. | M | |
| 477 | Gear | Gaelic | Short. | M | |
| 478 | Gearald | Gaelic | Gaelic form of Gerald. | M | |
| 479 | Gervin | Gaelic | Rough. | M | |
| 480 | Ghleanna | Gaelic | Lives in the valley. | F | |