Data aggreggators have compiled physical album sales records of Korean groups until 2019. The total sales include both Korean and Japanese releases.

Disclaimer: Some recent sales (month of October) may have not been included yet. 

Here are the Top 10 Best Selling Korean Groups of All Time:

1. BTS - 18.64 million

Label: BigHit Entertainment
Debut year: 2013

2. TVXQ - 11.68 million
Label: SM Entertainment
Debut year: 2003

3. EXO - 11.17 million
Label: SM Entertainment
Debut year: 2012

4. Seo Taiji and Boys - 8.06 million

Label: Bando Eumban, Yedang Company

Debut year: 1991

5. TWICE - 6.88 million
Label: JYP Entertainment
Debut year: 2015

6. H.O.T. - 6.55 million

Label: SM Entertainment

Debut year: 1996

7. g.o.d - 5.43 million

Label: JYP Entertainment, CJ E&M, Synarra Records, SidusHQ/Kakao M

Debut year: 1999

8. SNSD - 5.32 million
Label: SM Entertainment
Debut year: 2007

9. DJ DOC - 5.20 million

Label: Dae Woo Record Co., Shinchon Music, Synnara Music Co., EMI Records, Show Globe
Debut year: 1994

10. Cool - 4.89 million

Label: Genie Music, Samsung, Ono Entertainment, SM Entertainment, Sky Entertainment, Cool Music
Debut year: 1994