Juliette is the French diminutive of Julia — from Iulius (the Roman gens name) — best known through Shakespeare's heroine in Romeo and Juliet (the French form preserving the original Italian Giulietta). A top-200 US baby name since 2014. Juliette Capulet in Shakespeare's Romeo and Juliet (c.
Juliette 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 Juliette reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.