Lee Jay-hyun is a South Korean businessman, the billionaire Chairman of the Board of CJ Group (KRX: 001040), a major conglomerate spanning food and food service, entertainment (CJ ENM), pharmaceuticals, and home shopping. His wealth is generational, tied to the empire founded by his grandfather, Lee Byung-Chull (the founder of Samsung).

Lee is the eldest grandson of the Samsung founder and the son of Lee Maeng-hee. His career is defined by generational stewardship and strategic growth of the diversified CJ Group (which was spun off from Samsung in the 1990s). He holds a B.A. in Sociology from Korea University.

• CJ Group (Chairman of the Board): The core publicly traded asset, a massive conglomerate spanning food and food service, entertainment (CJ ENM), and logistics (revenue of $28.2 billion in 2023).
• Entertainment Dominance: His company controls CJ ENM (Korea's largest entertainment and media company).
• Succession: He formally inherited the chairmanship in 2013.
• Controversy: His career is linked to legal issues regarding embezzlement and tax evasion (leading to his arrest and trial).

Lee Jay-hyun's strategic leadership transformed CJ Group into a global entertainment and food service giant. The company's structural contribution is tied to its role in pioneering K-Content (Korean media) globally through CJ ENM (producing K-dramas, films, and music events). He successfully led the spin-off and growth of the CJ Group (originally the sugar and flour division of Samsung).

His career faced a major crisis in the 2010s when he was arrested and charged with embezzlement and tax evasion (and subsequently convicted in 2017). He stepped down as Chairman during his trial but returned in a less operational capacity. His wealth is secured by the colossal, long-term, stable profitability of the food, logistics, and global entertainment sectors.

Lee Jay-hyun's social impact is structural, stemming from CJ Group's role as a massive global employer and foundational provider of food, logistics, and entertainment services (including the global K-Content phenomenon). His structural contribution is tied to the successful development and globalization of the Korean entertainment industry.

His personal philanthropy supports various community and educational initiatives. His career is often cited for illustrating the high-stakes nature of chaebol governance and the legal scrutiny faced by executives.

Lee Jay-hyun maintains the professional, composed style of a corporate executive. His attire is consistently formal and high-quality, favoring tailored business suits. His aesthetic reflects serious authority and stability, typical of a leader in the South Korean chaebol system.

Residing in Seoul, South Korea, his luxury is the immense security and financial reward derived from his multi-billion dollar fortune. His life is dedicated to corporate governance, entertainment production, and the long-term stewardship of the CJ Group empire.