Kim Jung Nam, known by the stage name Kim Ba Da, is a South Korean singer, musician, producer, and songwriter.
From 1995 to 1999, he was the fifth vocalist of the Korean rock band Sinawe. He then formed the rock band Butterfly Effect in 2003 but disbanded in 2007. That same year, he became the vocalist of The Ratios, an electronic rock band. In 2013 he released his first solo album, N. Surf Part 1.