Suzy is the English diminutive of Susan/Susanna — from the Hebrew Shoshana ("lily") — also used as a romanization of the Korean Su Ji (수지). Solo singing career launched in 2017 with Yes? No?; her 2019 single Cape topped Korean charts. Forbes Korea Power Celebrity #1 (2015, 2016, 2017). Suzy Cheung — Hong Kong fashion model. Suzy is also a 1936 MGM film with Jean Harlow and Cary Grant.
Suzy 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 Suzy reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.