Caitlin is the Irish form of Catherine — from the Greek katharos (pure). Time Athlete of the Year (2024).
Subject of countless 2024 sports retrospectives.
Caitlin 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 Caitlin reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.