A spelling variant of Olivia, from Latin oliva, meaning "olive tree."
Oliviah is a contemporary spelling variant of Olivia, one of the most enduringly beloved names in the English-speaking world. Olivia derives from the Latin oliva, meaning "olive tree" — a symbol laden with ancient meaning across Mediterranean civilizations. The olive branch has stood for peace since classical antiquity; olive oil anointed kings and illuminated temples; the olive tree itself, capable of living for millennia, came to represent wisdom, endurance, and divine favor.
To name a child Olivia was, in its origins, to invoke that entire symbolic world. While the name appears in medieval European records, its great literary launch came in 1602 when Shakespeare placed it at the center of Twelfth Night — Olivia, the wealthy noblewoman pursued by Duke Orsino and ultimately wooed by the disguised Viola. Shakespeare's Olivia is witty, dignified, and entirely in command of her own heart, and her name acquired those qualities by association.
The name spread steadily through the English-speaking world over the following centuries and experienced a remarkable resurgence in the late 20th century, reaching the top of naming charts in the United States, United Kingdom, and Australia in the 2010s and holding there through the 2020s. The -ah ending of Oliviah follows a popular modern convention — seen in Hannah, Aaliyah, Mariah — that adds orthographic weight and a breath of individuality to a name at risk of feeling overused. Oliviah says: I know this name's beauty, and I'm claiming it in my own hand.