| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 281 | Folant | Welsh | Strong. | M | |
| 282 | Fychan | Welsh | Small. | M | |
| 283 | Fyrsil | Welsh | Welsh form of Virgil 'bears the staff'. | M | |
| 284 | Gaenor | Welsh | A variant of the Gaelic Gaynor, meaning 'son of the blond man'. | M | |
| 285 | Garanhon | Welsh | Legendary son of GIythvyr. | M | |
| 286 | Garanwyn | Welsh | White shank. | M | |
| 287 | Gareth | Welsh | Gentle. Modest and brave Sir Gareth was a legendary knight of King Arthur's Round Table. | M | |
| 288 | Garnoc | Welsh | Dwells by the alder tree river. | M | |
| 289 | Garnock | Welsh | Dwells by the alder tree river. | M | |
| 290 | Garreth | Welsh | Gentle. Modest and brave Sir Gareth was a legendary knight of King Arthur's Round Table. | M | |
| 291 | Garry | Welsh | Diminutive of Gareth: Gentle. Modest and brave Sir Gareth was a legendary knight of King Arthur's Round Table. | M | |
| 292 | Garwyli | Welsh | Legendary son of Gwydaawg Gwyr. | M | |
| 293 | Gary | Welsh | Diminutive of Gareth: Gentle. Modest and brave Sir Gareth was a legendary knight of King Arthur's Round Table. | M | |
| 294 | Gavan | Welsh | Hawk of the battle: white hawk. From the medieval name Gawain. See also Gwayne. | M | |
| 295 | Gavin | Welsh | Hawk of the battle: white hawk. From the medieval name Gawain. See also Gwayne. | M | |
| 296 | Gavyn | Welsh | Hawk of the battle: white hawk. From the medieval name Gawain. See also Gwayne. | M | |
| 297 | Gawain | Welsh | From the Welsh words for little or white hawk. Hawk of the battle. | M | |
| 298 | Geraint | Welsh | A variant of the Latin Gerontius, from the Greek 'geron' meaning old. Famous bearer: Welsh opera singer Sir Geraint Evans. | M | |
| 299 | Gerontius | Welsh | Diminutive of Geraint: A variant of the Latin Gerontius, from the Greek 'geron' meaning old. Famous bearer: Welsh opera singer Sir Geraint Evans. | M | |
| 300 | Gerwyn | Welsh | Fair love. | M | |