TS Entertainment 티에스이엔티이알 was founded in October 2008 by Kim Taesong 김태송. The company is responsible for managing idol groups such as Secret, B.A.P., Sonamoo, and TRCNG.
The company signed the hip-hop duo Untouchable as their first artist and released their debut single "It's Okay" in the same month.
In October 2009, TS Ent. officially debuted the girl group Secret. They were first introduced to the public through the reality show "Secret Story" on Mnet. On October 13, 2009, Secret's debut single "I Want You Back" was released.
In July 2011, TS Ent. established themselves outside South Korea through the formation of TS Japan in Tokyo, Japan.
In January 2012, TS Ent. debuted their first male idol group, B.A.P. The members were introduced in a documentary show, "Ta-Dah, It's B.A.P.," which first aired on SBS MTV Korea on January 8, 2012.
On December 29, 2014, TS Ent. debuted their second female idol group, Sonamoo.
On November 27, 2014 the six members of B.A.P collectively filed a lawsuit against TS Entertainment in order to nullify their contracts, claiming unfair conditions and profit distribution. The following day, TS Ent. issued a press release refuting the claims made, stating that "there have been neither such maltreatments to the artists nor unfair clauses in the contract." On August 1, 2015, B.A.P. returned to TS Ent. as both parties reached a settlement.