Jeong Hyeon-cheol (hangul: 정현철; born February 21, 1972), better known as Seo Taiji (서태지), is a South Korean singer, musician, songwriter and record producer. After dropping out of high school to pursue a music career, he has risen to become one of the most prominent and influential cultural icons in South Korea, with many referring to him as "the President of Culture".

Following a brief stint in the heavy metal band Sinawe, Taiji formed Seo Taiji and Boys in 1992 with whom he found immediate success. They introduced incorporating elements of popular musical genres from the United States and contributed considerably larger to Korean pop culture and Korean pop's development in the 1990s. Although he initially announced retirement upon disbanding the group in 1996, Taiji released his first solo album two years later and continued his successful career.