Vittoria is the Italian form of Victoria — from the Latin victoria, meaning "victory." The Roman goddess Victoria was the personification of victory in battle.
Vittoria Colonna (1492-1547) was the Italian Renaissance poet and close friend of Michelangelo. The name is widely used in modern Italy.
Vittoria does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Vittoria reduce to 6, The Nurturer. This is a traditional interpretive system, not a factual claim about the name.