TS Entertainment was founded by Kim Tae-song in October 2008. The company signed Untouchable as their first artist and released their debut single "It's Okay" in the same month.
In October 2009, TS Entertainment officially debuted the four-member 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 Entertainment established themselves outside South Korea through the formation of TS Japan in Tokyo, Japan.
In January 2012, TS Entertainment debuted a six-member boy band named 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.