Lee Seo-hyun^[1] (Korean: 이서현; born September 20, 1973^[2]) is a South Korean businesswoman, fashion designer, and president of Samsung C&T Corporation. Daughter of Samsung Electronics chairman Lee Kun-hee,^[2] she is among the richest people in South Korea, with Forbes estimating her December 2024 net worth as US$2.1 billion and ranking her the 14th richest person in the country.^[1]

Lee was born on September 20, 1973, as the second daughter of Lee Kun-hee. Her paternal grandfather is Lee Byung-chul, founder of Samsung, and her maternal grandfather is businessman and jurist Hong Jin-ki. She graduated from Kyonggi Elementary School [ko], Yewon School [ko], Seoul Arts High School, and the Parsons School of Design (graduated 1997^[3]). In 2002, she joined Cheil Industries as head of a fashion research department. She served as vice president of Cheil Industries until 2013. She was made president of Everland's fashion division at the end of 2013.^[2] She was president of Samsung C&T's fashion division from December 2015 until December 2018.^[3] In April 2024, she was made president of Samsung C&T.^[3][1] In 2024, it was reported that she owned 6.23% of Samsung.^[3]

Her husband is Kim Jae-yeol (김재열), great-grandson of vice president of South Korea and journalist Kim Seong-su. Since 2019, he has been president of Samsung Global Research (삼성글로벌리서치). They married in 2000, and have one son and three daughters.^[4]