So Ji Sub is a South Korean actor under 51K Entertainment. He was born in Yongsan District, Seoul, and grew up in Incheon. After making his debut as a jeans model, he became an actor best known for his roles in the television series What Happened in Bali, I'm Sorry, I Love You, Cain and Abel, Phantom, Master’s Sun, Oh My Venus, Terius Behind Me and the film Rough Cut. Ji Sub has also released several hip-hop EPs. Self-described as introverted and insecure in his childhood and teenage years, So trained to become a professional swimmer for 11 years and bagged the bronze medal at the Korean National Games. He was named the goodwill ambassador of Gangwon Province to boost tourism there, and a 51 kilometer-long trail in the province was named "So Ji-sub Road," which was unveiled to the public on May 20, 2012. He was the first Korean actor to have an entire road named after him. He was also named promotional ambassador for cybercrime prevention by the National Police Agency, helping to raise awareness and prevent cybercrimes such as hacking and Internet fraud by taking part in various promotional activities. So is the owner of the Apgujeong-dong branch of CJ Foodville's A Twosome Place. He has also helped imported foreign films, having invested in art-house films such as the U.S.-British-French co-production Philomena (2014), the Chinese film Coming Home (2014), the Japanese crime thriller The World of Kanako (2014)" and the American horror film A Girl Walks Home Alone at Night (2015). On April 7, 2020, he announced his marriage to former TV presenter Jo Eun Jung.

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