Woo Ji-ho, known professionally as Zico, is a South Korean rapper, record producer, and singer-songwriter. He debuted as the leader of the boy band Block B in 2011 and made his first solo release in 2014.
Zico is notable for his crossover skills within the Korean hip hop scene, maintaining an underground reputation along with mainstream appeal as a Korean idol. He is a record producer of both K-pop and Korean hip hop music. He is also part of the crew Fanxy Child, which he formed in 2016. In 2019, he released his first full-length solo album, Thinking. Zico's 2020 single "Any Song" spent seven weeks atop the Circle Digital Chart, becoming the longest-running number-one song in history at the time. In 2024, he achieved his first number-one hit on the US Billboard World Digital Song Sales chart and his first top-ten entry on the Billboard Global Excl. U.S. chart with the single "Spot!" featuring Jennie.