2009 in South Korean music

The following is a list of notable events and releases that musically occurred in 2009 in South Korea.

Notable events and achievements

 * February 12 – At the annual Seoul Music Awards, Wonder Girls win the grand prize.
 * March 12 – Toy, Sister's Barbershop, and Kiha & The Faces win the grand prizes at the 6th Korean Music Awards.
 * March 13 – "Gee" by Girls' Generation tops the Music Bank chart for nine consecutive weeks, setting a new record.
 * March 28 – DFSB Kollective signs worldwide distribution deals with various South Korean music acts, including Epik High, Yoon Mi-rae and Drunken Tiger, bringing Korean music content to iTunes.
 * March – According to statistics from Google trends, online searches for K-pop began their steady increase in 2009, following the release of the hit songs Super Junior's "Sorry Sorry" and Girls' Generation's "Gee".
 * April 4 – BoA's self-titled debut English album becomes the first album by a Korean artist to appear on the Billboard 200, entering at number 127.
 * June 27 – Wonder Girls open for the Jonas Brothers on their 2009 World Tour during their North American leg.
 * July 20 – Wonder Girls make their American live television debut on The Wendy Williams Show, where they perform "Nobody".
 * August 5 – The choreography of "Mister" by Kara, featuring the "butt dance", spreads in popularity in South Korea.
 * October 12 – TVXQ become the first foreign artist in twenty years to peak at number one on the Japanese Oricon DVD ranking.
 * October 31 – "Nobody" (English version) by Wonder Girls becomes the first K-pop song to chart on the Billboard Hot 100, entering at number 76.
 * November 21 – The 2009 Mnet Asian Music Awards take place. 2NE1, 2PM, and G-Dragon win the grand prizes at the ceremony. 2NE1 becomes the first artist to win a grand prize in their debut year.
 * December 10 – At the 24th Golden Disc Awards, Super Junior and Girls' Generation receive the grand prizes.
 * December 16 – The inaugural Melon Music Awards are held in Seoul, with Girls' Generation and G-Dragon winning the grand prizes.
 * December 19 – According to the 2009 Oricon Annual Ranking, TVXQ becomes the third best-selling artist in Japan of the year, with ₩90.3 billion in sales.

Debuting groups

 * 2NE1
 * 4minute
 * After School
 * Apollo 18
 * Beast
 * Bye Bye Sea
 * December
 * f(x)
 * JQT
 * MBLAQ
 * Rainbow
 * Secret
 * SHU-I
 * Supreme Team
 * T-ara
 * Urban Zakapa

Solo debut

 * Ali
 * Brave Brothers
 * Dara
 * Dia
 * Gilme
 * G-Dragon
 * Hwang Jung-eum
 * Jo Eun-byul
 * Kim Yoon-ji
 * Kim Jeong-hoon
 * Koo Hye-sun
 * Kyeon Mi-ri
 * Lee Hyun
 * Park Bom
 * Seo In-guk
 * Taegoon
 * Tymee

Disbanded groups

 * Baby Vox Re.V
 * Battle
 * Super Junior-M