Nikki is the English diminutive of Nicole — from the Greek Nikolaos, nikē (victory) + laos (people). Nikki Sixx (Mötley Crüe) is male. Nikki Bella — WWE professional wrestler.
Subject of countless 2024 campaign profiles.
Nikki 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 Nikki reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.