[1] Jellyfish Entertainment is the home of artists including Jang Hye-jin, VIXX, Verivery, Evnne and formerly gugudan, Park Yoon-ha.

[3] The first artist to sign under the company was the established ballad singer Sung Si-kyung, who released the single "Parting Once Again" (Korean: 한번 더 이별).

In November 2008, singer Park Hyo-shin signed to the agency and was featured on the album Hwang Project Vol.1 Welcome To The Fantastic World.

The following year, Super Star K contestant Seo In-guk and Altair (Lee Ji-hoon) later joined Jellyfish Entertainment.

On September 12, Jellyfish Entertainment held their first live concert Jellyfish Live at Tokyo's Zepp Diver City in Japan,[6][7] and in December, both Park Hyo-shin and Sung Si-kyung held concert performances in Seoul.

In February 2013, the Y.Bird from Jellyfish Island project released the digital singles "I Can't Live Because of You" by Seo In-guk featuring Verbal Jint (Y.BIRD from Jellyfish Island With Seo In Guk) in February[11][unreliable source?

[17][18] The Jelly Christmas 2015 single was released on December 15 with the song "Love In The Air" (Korean: 사랑난로).

Kang Mi-na and Kim Se-jeong winning the survival show debuted as part of the lineup of the year-long project girl group I.O.I, while still under Jellyfish Entertainment.

][22] It was confirmed that following their promotions as part of I.O.I, the trainees would officially debut as members of the agency's first girl group.

In October, Jellyfish Entertainment announced that former Dal Shabet member Jiyul, signed a contract with the agency in order to pursue her career as an actress.

In November, former Jewelry member Kim Ye-won, joined Jellyfish Entertainment as an actress.

][37] In April 2017, agency trainee Yun Hee-seok represented Jellyfish Entertainment in the second season of the television survival show Produce 101.

On May 3, agency trainee Kim Min-kyu and Choi Jun-seong represented Jellyfish Entertainment in the fourth season of the television survival show Produce X 101.

[41] On March 6, it was revealed that as of June 6, 2019, CJ E&M had sold 40,396 shares of Jellyfish Entertainment for 1.9 billion won.

[42] From May to July, Gugudan member Sally participated in the Chinese television survival show Produce Camp 2020.

[48] On August 6, Jellyfish Entertainment trainees Kim Da-yeon and Sakamoto Shihona competing in the television survival show Girls Planet 999.

On July 10, 2023, ZB1 debuted with the extended play (EP) Youth in the Shade, meeting commercial success with over 2 million sold units and high rankings in multiple charts internationally.

[59][60][61] Their second EP Un: Seen released on January 22, 2024, with its lead single "Ugly" winning Show Champion 9 days later.