2003 in South Korean music

The following is a list of notable events and releases that happened in 2003 in music in South Korea.

Debuted groups and sub-units

 * Big Mama
 * Brown Eyed Soul
 * Buzz
 * Dynamic Duo
 * Epik High
 * The RockTigers
 * S
 * Stony Skunk
 * Take
 * TVXQ

Solo debuts

 * Bada
 * Big Mama King
 * Koo Jun-yup
 * Eugene
 * Gummy
 * Jeon Hye-bin
 * KCM
 * Koo Jun-yup
 * Lee Hyori
 * Lee Jung
 * Lee Min-woo
 * Lexy
 * Masta Wu
 * Seven
 * Tim
 * U;Nee
 * WoongSan
 * Park Yong-ha

Disbanded groups

 * CB Mass
 * jtL
 * Luv
 * M.I.L.K.
 * Shinvi