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Oh Dal-su
★ Acting

Oh Dal-su

Born 1968 · Daegu, South Korea · Active 2002–2026

Oh Dal-su, born in Busan, is a South Korean actor known for his compelling performances in film and theater. He gained prominence for his role in Lady Vengeance (2005), where he plays a pivotal character that adds depth to the film's exploration of revenge and morality. With a background in theater as the head of the Singiru Manhwagyeong company, Oh's transition to film has allowed him to embody a range of complex characters, further enriching the narrative landscapes of cult cinema.

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Lady Vengeance

Lady Vengeance

2005 ★ 7.5
as Mr. Chang

A Christian musical procession waits with a symbolic block of tofu outside a prison for the release of Lee Geum-ja (Lee Young-ae), a reformed female prisoner. Convicted of kidnapping and murdering a 6-year-old schoolboy, Won-mo, 13 years earlier, Geum-ja became a national sensation because of her young age, angelic appearance, and eager confession to the crime. However, she became an inspirational model for prisoner reform during her incarceration, and her apparent spiritual transformation earned her an early release. Free, she is now intent on revenge. Geum-ja quickly shows that her "kind-hearted" behavior in prison was a cover to earn favor and further her revenge plans. She visits the other paroled inmates, calling in favors that include food, shelter, and weapons. She begins work in a pastry shop and starts an affair with a young shop assistant, Geun-Shik, who would be the same age as Won-mo, had he lived. It is revealed that Geum-ja did not smother Won-mo. The detective on her case was aware of her innocence, but helped her fake crime-scene details to ensure her confession looked credible. As a young high school student, Geum-ja had become pregnant and, afraid to go home to her parents, turned to Mr. Baek (Choi Min-sik), a teacher from her school, for help. Mr. Baek expected Geum-ja to provide sex and assist in his kidnapping racket in return. He used her to lure 5-year-old Won-mo to him, with the intent of ransoming the child, but murdered the boy. He then kidnapped Geum-ja's infant daughter and threatened to murder the baby if Geum-ja did not take the blame. She has spent her time in prison planning revenge on Mr. Baek for the murder of Won-mo, causing Geum-ja's child to grow up without a mother, and for sending her to prison. Geum-ja discovers that her daughter was adopted by Australian parents. Jenny, now an adolescent, does not speak Korean and does not initially embrace her mother, though she does return with Geum-ja to Seoul to bond. Geum-ja plans to kidnap and murder Mr. Baek, now a children's teacher at a preschool, with the aid of his wife, another ex-convict. Mr. Baek hires thugs to kill Geum-ja and Jenny but Geum-ja kills them and Mr. Baek is subdued. Mr. Baek wakes up tied to a chair in an abandoned schoolhouse. On his cell phone strap, Geum-ja discovers the red marble from Won-mo's crime scene, which had been taken as a trophy, and is horrified to see other children's trinkets also on the strap. After shooting him in both feet, she discovers snuff tapes in his apartment of the other children he had murdered. He had not been part of a ransoming racket; he would kidnap and murder a child from each school he worked at because he found them annoying. After killing each one, he would fake a ransom call to the parents, collect the money, and move on to a different school. Sickened that four more children died because Geum-ja did not turn in the real killer 13 years ago, Geum-ja and the original case detective contact the parents and relatives of the missing children to the school. After watching each tape, the group decides to murder Mr. Baek together. They take turns beating, mutilating and torturing him until he is dead, then take a group photo, ensuring that none of them can turn in the others without implicating themselves. They then bury the corpse outside. Geum-ja, the detective, and the relatives all converge at Geum-ja's bakery. Afterward, she sees the ghost of the murdered child who then transforms into his grown self (the age that he would have been if he had lived). Later, she meets Jenny and instructs her daughter to live purely, like tofu. She buries her face in an all white frosting covered cake and weeps as Jenny hugs her.

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Career Highlights Top 6 by popularity · TMDB

Filmography

73 credits
2020s 13 credits
2026
The King's Warden as Elder Yoon
Movie ★ 7.1
2025
Boss as Kim In-sool
Movie ★ 6.0
2025
No Other Choice as Detective #1
Movie ★ 7.5
2025
The People Upstairs as Man next door
Movie ★ 5.7
2024
4PM as Jung-in
Movie ★ 5.5
2024
I, the Executioner as Oh Jae-pyeong
Movie ★ 6.9
2023
Woongnami as Na Bok-cheon
Movie ★ 6.0
2023
The Wild as Gak-su
Movie ★ 5.2
2022
Movie ★ 7.0
2021
Movie ★ 4.3
2021
Squid Game as Captain Park
TV ★ 7.9
2021
Squid Game as Cap. Park
TV ★ 7.9
2020
Best Friend as Eui-sik
Movie ★ 7.5
2010s 31 credits
2018
Movie ★ 6.3
2017
Movie ★ 7.4
2017
Movie ★ 8.0
2017
Movie ★ 8.0
2016
Old Days as Self
Movie ★ 6.6
2016
The Great Actor as Jang Seong-pil
Movie ★ 6.7
2016
Tunnel as Dae-kyung
Movie ★ 7.3
2016
Run-Off as Kang Dae-woong
Movie ★ 6.1
2016
Master as Hwang Myung-joon
Movie ★ 6.9
2015
Movie ★ 6.6
2015
Assassination as Pomade
Movie ★ 7.3
2015
Veteran as Oh Jae-pyeong
Movie ★ 6.9
2015
You Call It Passion as Director Ko
Movie ★ 6.8
2014
The Pirates as Han Sang-jil
Movie ★ 7.0
2014
Slow Video as Byeong-soo
Movie ★ 7.0
2014
Movie ★ 7.4
2013
The Attorney as Park Dong-ho
Movie ★ 7.8
2013
Movie ★ 7.9
2013
My Paparotti as Principle Deok-saeng
Movie ★ 7.1
2012
Code Name: Jackal as Chief Detective Ma
Movie ★ 5.9
2012
The Thieves as Andrew
Movie ★ 6.7
2012
Soar Into the Sun as Master Sergeant Min Dong-phil
Movie ★ 6.6
2012
The Ugly Duckling as Nak-man's Father
Movie ★ 6.0
2012
Movie ★ 7.4
2012
TV ★ 2.2
2011
Movie ★ 6.6
2011
Late Blossom as Dal-su
Movie ★ 7.8
2011
Head as Professor Kim Sang-chul / Professor Oh Byung-seok
Movie ★ 5.8
2010
Troubleshooter as Choi Sang-cheol
Movie ★ 6.8
2010
The Servant as Old Man Ma
Movie ★ 5.7
2010
Foxy Festival as Gwang-rok
Movie ★ 5.8
2000s 27 credits
2009
Thirst as Yeong-doo
Movie ★ 7.1
2009
Movie ★ 6.3
2009
Private Eye as Oh Yeong-dal
Movie ★ 6.3
2009
Money Show as Factory President
Movie ★ 6.0
2009
Dream as Lee Young-chul
TV ★ 6.0
2008
Movie ★ 7.2
2008
Movie ★ 5.8
2007
Project Makeover as Jung-ju's Father
Movie ★ 7.1
2007
Movie ★ 6.5
2007
Movie ★ 4.4
2006
Movie ★ 7.0
2006
Bar Legend as Na Sang-Choon
Movie ★ 5.1
2006
A Bloody Aria as Oh Ge-un
Movie ★ 5.4
2006
Once in a Summer as Nam Gyun-soo
Movie ★ 6.8
2006
The Host as The Monster (voice)
Movie ★ 7.0
2006
Movie ★ 5.4
2006
Movie ★ 4.0
2005
Lady Vengeance as Mr. Chang
Movie ★ 7.5
2005
A Bittersweet Life as Myeong-goo
Movie ★ 7.4
2005
Crying Fist as Yong-dae
Movie ★ 7.3
2004
Woman Is the Future of Man as Glutinous Rice Cake Seller
Movie ★ 6.1
2004
Movie ★ 7.1
2003
Oldboy as Park Cheol-woong
Movie ★ 8.2
2003
If You Were Me as Police Station Chief (seg. 6)
Movie ★ 6.0
2003
Never Ending Peace and Love as Police Box (Chief)
Movie
2002
Movie ★ 5.4
s 2 credits
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