Master's Sun is a 2013 South Korean television series starring So Ji-sub and Gong Hyo-jin. The romantic comedy is written by the Hong sisters and aired for 17 episodes on SBS TV every Wednesday and Thursday at 21:55 (KST) from August 7 to October 3, 2013.

So Ji-sub is a South Korean actor. After making his entertainment debut as a jeans model, he became known for his leading roles in the television series Something Happened in Bali (2004), I'm Sorry, I Love You (2004), Cain and Abel (2009), Phantom (2012), Master's Sun (2013), and Oh My Venus (2015–16), as well as the film Rough Cut (2008). So has also released several hip hop EPs.