| Garia | A name meaning a guardian. |
| Gavan | White hawk. From the medieval name Gawain. See also Gwayne. |
| Gaven | A name meaning white hawk. |
| Gavenia | A person of noble descent. |
| Gavin | A name meaning white hawk. |
| Gavina | A feminine form of Gavin. |
| Gavyn | White hawk. From the medieval name Gawain. See also Gwayne. |
| Gib | Diminutive of Gilbert: Derived from the name Gilbride, meaning 'servant of St. Bridget'. |
| Gilbarta | A name meaning bright pledge. |
| Gilbertine | Feminine form of Gilbert: Derived from the name Gilbride, meaning 'servant of St. Bridget'. |
| Gilleabart | A bright and noble pledge holder. |
| Gillecriosd | A devoted servant of Christ. |
| Gillivray | Servant of judgment |
| Gilmat | A bright and noble protector. |
| Giordyn | One who flows down or descends. |
| Gobha | A person of radiant beauty |
| Goraidh | One who is fair and radiant |
| Gordain | A variant of the name for a hero. |
| Gordan | One who is a great or proud hero. |
| Gordana | A name meaning proud or dignified. |
| Gordania | A land belonging to the proud one. |
| Gow | A name meaning a smith or worker. |
| Gowan | A Scottish name meaning a golden daisy. |
| Graeme | A dweller of the gravelly area. |
| Grahame | This Scottish surname is a variant of the Lincolnshire place name Grantham, meaning Grant's homestead, or farm home, and is also a common given name. Famous bearer: British writer Graham Greene. |
| Grant | To bestow or give something away. |
| Grear | A surname meaning a watchful person. |
| Gregor | Derived from the Greek for vigilant. |
| Grier | watchful, vigilant |
| Griorgair | A person who is alert and wary. |
| Grizel | Scottish form of Grizelda gray haired |
| Grizela | Scottish form of Grizelda gray haired |
| Gunn | A person of battle or war. |
| Gunna | A woman of battle or strife. |
| Gwennap | the name of a saint and a placename |
| Hamilton | Place-name and surname of one of the great noble families of Scotland. |
| Harailt | A powerful army commander. |
| Hay | From the stockade |
| Haye | From the stockade |
| Henderson | Son of the man named Henry. |