Lee Si-young (Korean: 이시영; born April 17, 1982) is a South Korean actress and former amateur boxer.
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Early life
Born Lee Eun-rae in Cheongwon County, North Chungcheong Province, South Korea), her family moved to Seoul when she was 9 years old. Lee majored in Fashion Design at Dongduk Women's University, and later changed her name to Lee Si-young.
Career
Acting
Lee made her acting debut in 2008 in a guest appearance on season 3 of the Super Action TV procedural Urban Legends Deja Vu, followed by the historical drama "The Kingdom of The Winds".
In 2009 Lee began to gain attention with several high-profile supporting roles. In the smash hit Boys Over Flowers, Lee played the character of Sakurako Sanjo in the source manga Hana Yori Dango, who was mercilessly teased for being homely as a young girl, then undergoes extensive plastic surgery and becomes a backstabbing frenemy to win the heart of her tormentor. Lee then played the mistress of a married man in the surrogacy melodrama Loving You a Thousand Times.
Five Senses of Eros was an omnibus film from five different directors, and in the segment "Believe in the Moment" three teenage couples decide to swap partners for 24 hours, played by Lee and her fellow up-and-coming actors Kim Dong-wook, Song Joong-ki, Shin Se-kyung, Jung Eui-chul and Lee Sung-min. In the comedy Descendants of Hong Gil-dong (also known as The Righteous Thief), Lee played the love interest of Lee Beom-soo, whose character is the 18th descendant of Hong Gil-dong, a Joseon-era Robin Hood whose family for generations has passed down the tradition of stealing only from the rich and giving to the poor while keeping their actions secret.
In 2009, she rose to mainstream popularity when she joined the cast of We Got Married, a reality show about fake married couples, and was paired with Jun Jin of the boy band Shinhwa. Called the "Gundam couple" by fans for their mutual love of the anime, Lee and Jun Jin began dating off-screen, making them the first couple to officially have a real relationship outside the show. However, after dating for 6 months, they broke up in September 2009.
In 2010, she began hosting Entertainment Relay (also known as Entertainment Weekly), the longest-running entertainment news show on Korean television (her stint ended in 2012). Then in Birth of the Rich (also known as Becoming a Billionaire), Lee was the standout in the cast and was praised for her portrayal of a spoiled, Paris Hilton-esque chaebol heiress, despite mixed reviews for the series itself. Later that year, she starred in Playful Kiss, another series adapted from a manga (in Itazura na Kiss, her character is Sasuiko, a haughty paragon of perfection who becomes the heroine's rival in love). Lee had acquired a reputation for making her second-lead roles memorable and endearing in their own right, giving her characters a human, lovable side despite their role as antagonists in the narrative.
Music
Lee never formally debuted as a singer, but she has made contributions to several of her films' soundtracks. She was also featured in one track on then-boyfriend Jun Jin's EP Fascination in 2009. And after she sang two tracks on Honey Family's fifth album Resurrection in 2010, band member Park Myung-ho praised Lee for her vocal talent.
In 2012, she and Jay Park appeared in Music and Lyrics, an MBC M reality show in which an actress and a male singer are paired together as lyricist and composer, respectively, to create a song, showing their meetings and songwriting process. The song they composed, Polaris, was recorded by the girl group Tiny-G.
Boxing
Aside from her entertainment career. Lee was an amateur boxer. Despite taking up the sport in her late 20s and fighting opponents who are much more experienced and younger, in just three years, Lee established herself in the sport by winning a number of amateur titles in the 48-kg class.
She initially took up boxing in early 2010 to prepare for her role as a female boxer in a TV drama for MBC, training with Hong Soo-hwan, a former WBA bantamweight and super bantamweight champion. The drama ended up not getting produced, but she quickly became enamored of the sport. Lee said, "I kept it up as a hobby and was told that I had potential, so I trained really hard. Boxing changed who I am. I became more honest and extroverted, with more confidence in who I am." She continued training, reducing her body fat from 9.9 kg to 4.7 kg, and began boxing competitively.
Lee's passion for the sport caused her agency anxiety. There were worries she might hurt herself, especially if she sustains facial injuries. A staff said, "But no matter how hard we try to persuade her, she doesn't want to quit."
To the surprise of fans and experts alike, Lee entered and won the 7th Annual Women's Amateur Boxing Competition in 2010, and the women's 50-kg category in the 10th KBI National Lifestyle Athletics Boxing Championship in November of that same year.
Her momentum continued throughout 2011, winning the women's 48-kg category in the 47th Seoul Amateur Boxing Match in February, and by RSC (Referee Stopped Contest) in the 7th National Amateur Boxing Championships in March. Lee Seung-bae, head coach of the Korean national boxing team, said Lee "has a very accurate left punch. She is tall and has long arms, a very good body for boxing," while coach Baek Seung-won said she has "the fire and the perfect physique" to become a professional boxer, but added, "She is a bit old (to turn pro now)." She later won the rookie of the year award for Seoul-based boxers.
More wins followed in July 2012 with the women's 48-kg category in the 42nd Seoul Boxing Prematch/Amateur Boxing Federation, and the 33rd President's Cup Amateur Boxing Contest.
In December 2012, she tried out for the first time for the national women's boxing team by competing in the under-48 kg light flyweight category in the National Amateur Boxing Championships, which doubled as the 2013 first national qualifying round. The 28-year-old was the oldest participant at the national championships with a 17 to 34 age limit. But Lee was defeated in the final of the 66th National Amateur Boxing Championships.
Personal life
In July 2017, she announced through her social media that she would be getting married in September and was 14 weeks pregnant. She gave birth to the couple's first child, a boy, on January 7, 2018.
On March 17, 2025, her agency, Ace Factory, confirmed the news of the divorce, stating, "They have mutually agreed to part ways and are currently proceeding with the divorce process. As this is a personal matter, we ask for your understanding that we cannot respond to further inquiries."
On July 8, 2025, Lee announced through her official social media account that she is expecting her second child. She also revealed the pregnancy was achieved through IVF. On November 5, 2025, Lee's agency announced that she recently gave birth to her second child, a daughter.
Controversy
On July 1, 2015, Lee and her then agency J,Wide-Company filed a cyber defamation lawsuit against a reporter who allegedly spread rumors online that Lee had appeared in a sex video which the agency was using to blackmail her, leading to a suicide attempt; Lee and J,Wide-Company denied those rumors and an arrest warrant for the reporter was later issued by the Seoul Central Prosecutors' Office.
Filmography
Ambassadorship
Swiss Tourism Ambassadors' Swiss Friends (2022)
