If it is said that music in the US and European countries is famous for solo singers, the Korean music world is crowned by music groups. We've all probably hummed the tunes of Big Bang or Girl Generation, BTS or Black Pink. While some Korean companies prefer small teams, there are also many others that prefer large groups. There was even a band formed with members exceeding 20, which is a terrible number, right? And last June, a YouTube channel called 'SinB Ssi' experimented with making a list of the groups with the largest number of members in the Korean music world. And now let me review the 10 groups ranked on this list
1 Apeace - 21 members

Image by Apeace. Source: Aminoapps.com
Second is Apeace with an initial debut of 21 members. Former name: Double B/21 Parent company: Golden Goose Entertainment Year of debut: 2011 The group was divided into 3 subgroups: Lapis, Jade and Onyx. The group is primarily based in Japan.
2 NCT - 21 members.

Image by NCT. Source: Kprofiles.info
Tied second with Apeace is NCT, which also currently has 21 members. NCT is a South Korean boy band formed and managed by SM Entertainment in 2016. NCT stands for Neo Culture Technology, which according to chairman Lee so-man means the group will not limit the number of members and promote by small groups in many cities around the world
3 Super Junior - 15 members.

Image bySuper Junior. Source: cucnghethuatbieudien.gov.vn
Super Junior is a South Korean boy band. Formed in 2005 by SM Entertainment's Lee so-man with 12 members, Kyuhyun was the last member added in 2006, making the project group a permanent boy group with the most populous record of 13 members.
4 14U - 14 members.

Image by 14U. Source: bloganchoi.com
14U/One For You is a South Korean boy group, debuting on July 22, 2017, consisting of 14 members under BG Entertainment. The group is divided into 2 subgroups: Xplosive and Lucky.
5 Y-TEEN - 14 members

Image by Y-TEEN. Source: Screenshot
In August 2016, Starship Entertainment debuted a new 14-member group of the company called Y TEEN. With 7 members from each group MONSTA X and Cosmic Girls, Y TEEN will become a rare idol group of Kpop with male and female members.
6 Cosmic Girls - 13 members.

Image by Cosmic Girls. Source: tinnhac.com
Cosmic Girls or WJSN is a Korean-Chinese girl group formed in 2016 by Starship Entertainment and Yuehua Entertainment. Cosmic Girls is the K-Pop girl group with the most members ever with the goal of conquering the music market in 2 countries Korea and China. The group consists of 13 members
7 Topp Dogg - 13 members.

Image by Topp Dogg. Source: kenh14.vn
Topp Dogg debuted under Stardom Entertainment on October 22, 2013 with 13 members, which has now been merged under HUNUS Entertainment. On February 21, Hunus Entertainment announced that five members Sangdo, Hojoon, B-Joo, Xero, Yano will be promoting under the group name XENO-T
8 SEVENTEEN - 13 members.

Image by SEVENTEEN. Source: tintuckpop.net
Seventeen (also abbreviated as SVT) is a 13-member South Korean boy band formed by Pledis Entertainment. The group debuted on May 26, 2015. Seventeen is divided into three sub-groups, each of which takes on its own field: Hip-Hop Team (S.Coups, Wonwoo, Mingyu, Vernon), Vocal Team (Woozi, Jeonghan, Joshua, DK, Seungkwan) and Performance Team (Hoshi, Jun, The8, Dino).
9 I13 - 13 members

Image by I13. Source: kenh14.vn
Debuting in 2005 from the "crucible" of Lime Entertainment, this strangely named girl group is actually Kpop's first "populous" group with 13 members. But as many K-pop fans can see, i-13 didn't have a very prosperous career. By 2009, three members of the group, Min Jung, Jieun, and Ga Jin, became members of JQT.
10 Treasure13 - 13 members

Photos of the band. Source: kenh14. .com
After YG Treasure Box, YG announced the formation of 2 groups, Treasure and Magnum. However, recently, the company confirmed to combine two groups to operate with a 13-member squad in 2019. Through a large squad, the company wants to bring out the strengths of each member to build the largest fan community possible. After a successful debut, Treasure and Magnum will operate separately in different styles. Public opinion evaluates the model of Treasure13 quite similar to EXO on the day of its launch. Two small groups operate in parallel in 2 different markets, Korea and Japan.