In 2008, the year she turned 26, she debuted in the cable channel drama Urban Legends Deja Vu Season 3: Syndrome.
The breakthrough yearThe year she turned 27, she played Oh Min-ji in KBS2’s Boys Over Flowers, and her name became known when she appeared as singer Jun Jin’s virtual wife in MBC’s We Got Married Lunar New Year special.
In 2010 she was cast in a one-act drama about boxing. The drama fell through, and in November she won a lifestyle boxing competition. In 2011 she won the Seoul newcomers amateur boxing competition and a national women’s newcomers competition, and starred in the film Meet the In-Laws. In 2012 she was picked to represent Seoul in boxing, and in December she was runner-up in the first national team selection.
In 2013 she joined the Incheon City Hall boxing team, and in April she won the final of the last selection round and became a boxing national team member. In 2014 she did not enter the National Sports Festival because of a shoulder injury. In 2015 her agency said she planned to enter the selection for the Rio Olympics national team again.
In 2016 she appeared in the Navy petty officer special of MBC’s Real Men. In 2017 she married a restaurant businessman. A son was born in January 2018, and in July she appeared in MBC’s Risky Romance, her first drama since giving birth.
In 2019 she won an Excellence Award in the mid-length drama category at the KBS Drama Awards. In 2020 she appeared in Netflix’s Sweet Home. In 2022 she appeared in Disney+’s Grid.
In 2023 she appeared in Netflix’s Zombieverse, and in December Sweet Home season 2 was released. In 2024 Sweet Home season 3 and Zombieverse: New Blood were released.
In March 2025 she announced a divorce, in July a second pregnancy, and in November the birth of a second daughter.
Lee Si-young (born Apr 17, 1982) debuted in 2008, the year she turned 26, in a cable channel drama, and became known on Jan 25, 2009, the year she turned 27, when she appeared as singer Jun Jin’s virtual wife in MBC’s We Got Married Lunar New Year special. She was chosen for the boxing national team on Apr 24, 2013, the year she turned 31.
Ages are by calendar year (the year minus the birth year), birthdays aside.
Debuted in a cable channel drama.
Source 26 · Korea Lecturer News (Korean) · Profile for the film Sister · opens in a new tabSource 27 · Sports Kyunghyang (Korean) · A female actor in her thirties: debut and now · opens in a new tabSource 25 · Wikipedia (Korean) · Lee Si-young · opens in a new tab The debut year is from news reports and Wikipedia. The air date could not be confirmed.Played Oh Min-ji, a friend of Geum Jan-di. Nocut News wrote that she, nearly unknown until then, made her face known through this drama.
Source 01 · Nocut News (Korean) · Interview on Boys Over Flowers and We Got Married · opens in a new tabSource 02 · Nocut News (Korean) · Boys Over Flowers F4 OST · opens in a new tabAppeared as the partner of the singer Jun Jin. Nocut News wrote that the show made the name Lee Si-young known to the whole country, and Kukinews that she emerged as the biggest beneficiary among rookies when she was confirmed as a regular in season 3.
From that day’s broadcast she joined as a new couple with Jun Jin.
Source 04 · My Daily (Korean) · New couples on We Got Married · opens in a new tabWas cast in a one-act drama about a female boxer. The drama fell through at the production stage, but it brought her into boxing.
Source 06 · Yonhap News Agency (Korean) · National team selection final · opens in a new tabSource 08 · Money Today (Korean) · Another try for the Rio Olympics · opens in a new tab Only the year of the casting could be confirmed.Won an amateur boxing competition.
Source 06 · Yonhap News Agency (Korean) · National team selection final · opens in a new tabWon an amateur competition in the Seoul region.
Source 06 · Yonhap News Agency (Korean) · National team selection final · opens in a new tabSource 08 · Money Today (Korean) · Another try for the Rio Olympics · opens in a new tabYonhap News Agency calls it a surprise win.
Source 06 · Yonhap News Agency (Korean) · National team selection final · opens in a new tabStarred with Song Sae-byeok. Sports Today wrote that it reached No. 1 at the box office on its opening day.
Source 09 · Sports Today (Korean) · Meet the In-Laws · opens in a new tabWas picked as Seoul’s boxing representative in the city’s selection round.
Source 06 · Yonhap News Agency (Korean) · National team selection final · opens in a new tab The selection round could be dated only to the month.Lost the final 4-10 but earned the right to enter the last selection round. Her official record became eight wins and one loss in nine fights.
Source 06 · Yonhap News Agency (Korean) · National team selection final · opens in a new tabJoined as a full athlete.
Source 08 · Money Today (Korean) · Another try for the Rio Olympics · opens in a new tab The joining date could be confirmed only to the month.Won the women’s 48 kg final of the last national team selection round 22-20 by decision over a 19-year-old. Maeil Shinmun writes that because this weight class is not held at the Asian Games, the Olympics or the world championships, she would not enter the Taereung training village.
Source 07 · Maeil Shinmun (Korean) · Boxing national team · opens in a new tabAfter a dislocated shoulder, she said she would not enter the National Sports Festival. She then focused on acting.
Source 08 · Money Today (Korean) · Another try for the Rio Olympics · opens in a new tab The timing could be confirmed only to the month.Her agency said she planned to enter the first selection round after finishing the filming of tvN’s Righteous Love.
Source 08 · Money Today (Korean) · Another try for the Rio Olympics · opens in a new tabAppeared with Park Chan-ho, Seo In-young and others. Sports Kyunghyang wrote that her stamina, built up through boxing, led to a second heyday.
Source 10 · TV Daily (Korean) · Lee Si-young’s 2016 · opens in a new tabSource 27 · Sports Kyunghyang (Korean) · A female actor in her thirties: debut and now · opens in a new tabOn July 13 she announced on Instagram that she was 14 weeks pregnant and planned to marry, and she married on Sept. 30.
Source 11 · Sports Hankook (Korean) · Announces pregnancy and wedding plans · opens in a new tabSource 12 · Korea Politics and Economy News (Korean) · Maternity photos · opens in a new tabA son was born.
Source 13 · OSEN (Korean) · Return after giving birth · opens in a new tabPlayed Joo In-ah, an endocrinologist, in her first drama since giving birth.
Source 14 · My Daily (Korean) · Risky Romance press conference · opens in a new tab The first broadcast date could not be confirmed. The date is that of the press conference.Won it for the family drama Liver or Die.
Source 15 · Newsis (Korean) · 2019 KBS Drama Awards · opens in a new tabHer first Netflix series.
Source 16 · Xportsnews (Korean) · Lee Si-young’s latest · opens in a new tab The release date could not be confirmed.Appeared in a Disney+ drama released in February.
Source 17 · Newsen (Korean) · Lee Si-young’s latest · opens in a new tab The release date could not be confirmed.Appeared with Noh Hong-chul, Park Na-rae, Dindin and others. Season 2 was confirmed on Dec. 1.
Source 18 · Seoul Shinmun (Korean) · Zombieverse · opens in a new tabSource 28 · Sports Kyunghyang (Korean) · Zombieverse season 2 confirmed · opens in a new tabAppeared with the cast of the previous season.
Source 19 · Hankyung (Korean) · Sweet Home 2 director interview · opens in a new tabAppeared in the final season too.
Source 20 · Newsen (Korean) · Sweet Home season 3 · opens in a new tabAppeared again in the next season of Zombieverse.
Source 21 · MK Sports (Korean) · Lee Si-young on Zombieverse · opens in a new tabSource 29 · Sports Kyunghyang (Korean) · Zombieverse: New Blood producer · opens in a new tab The release date is confirmed by the Sports Kyunghyang article (released on the 19th of the previous month) and the MK Sports article quoting her Instagram post that it opened that day.Her agency said the divorce was proceeding by mutual agreement.
Source 22 · Hankyung (Korean) · Divorce announced · opens in a new tabShe herself said on social media that she was pregnant with a second child and explained the circumstances.
Source 23 · Segye Ilbo (Korean) · Second pregnancy revealed · opens in a new tabAnnounced the birth of a second daughter on social media.
Source 24 · OSEN (Korean) · News of a second daughter · opens in a new tab Outlets differ on when the birth took place, so it could not be confirmed; only the date of the announcement is given.END OF SELECTED RECORDSSelected records, 2008–2025 · not a complete list of work. “Key moment” is an editorial label, not a measure of success.
What did they do, and at what age?
AgeTrail lines up the key moments of a life by age.
Debut and breakthrough are marked separately, and every record has a source.
Film & TV · South Korea
Apr 17, 1982 —
Ages are counted from the birth year 1982: the year of the event minus 1982, birthdays aside. “Key moment” labels and the connecting story are AgeTrail's editorial reading.
Fact-checked: 2026.09.30 · An independent archive, not affiliated with the person or their agency.