Probably a shortened modern form related to Gia or Gianna, ultimately from names meaning 'God is gracious.'
Giah is one of the quieter treasures of the Hebrew scriptural tradition. The name appears in the Second Book of Samuel (2:24) as a place name — "the hill of Ammah, that lieth before Giah" — a landmark in the tribal territory of Benjamin. The Hebrew root underlying Giah (גִּיחַ, giakh) carries meanings of bursting forth, gushing out, or breaking through, imagery associated with rushing water, breath, and vigorous emergence.
It is a word rooted in the idea of force and life pressing forward. As a personal given name, Giah has remained rare for most of recorded history, quietly resting in the scriptural text without accumulating a roster of famous bearers. This rarity is precisely what makes it appealing to contemporary parents drawn to authentic Biblical names that have not been worn smooth by overuse.
It occupies a similar niche to names like Selah, Tirzah, and Kezia — names with genuine ancient provenance that feel fresh to modern ears because they were never common. In recent years, Giah has begun to surface more frequently in naming communities that prize Hebrew and Old Testament names, particularly among religiously observant families and parents seeking gender-neutral or softly feminine options with deep roots. The short, open sound — just one syllable, ending with that breathy "ah" — gives it a meditative quality. It is a name that feels like a quiet breath of discovery, ancient but still waiting to be fully found.