Yoo Yeon-seok
Biography
Ahn Yeon-seok (born April 11, 1984), better known by the stage name Yoo Yeon-seok, is a South Korean actor. After making his acting debut in 2003 with a small role in Oldboy, he resumed his acting career in 2008. His notable works include the films Re-encounter (2011), Architecture 101 (2012), A Werewolf Boy (2012), Whistle Blower (2014), and Love, Lies (2016), as well as the television series Reply 1994 (2013), Dr. Romantic (2016), Mr. Sunshine (2018), Hospital Playlist (2020–2021), and When the Phone Rings (2024).
Also Known As
Movie Appearances

Old Days
as Self
2016

Re-encounter
as Han-soo
2011

A Werewolf Boy
as Ji-tae
2012

Horror Stories
as Kidnapper
2012

Born To Sing
as Dong-soo
2013

The Whistleblower
as Shim Min-ho
2014

The Royal Tailor
as King Yeong-jo
2014

The Beauty Inside
as Woo-jin 123
2015

Perfect Proposal
as Lee Sung-yeol
2015

Architecture 101
as Jae-wook
2012

Mood of the Day
as Kim Jae-hyun
2016

Oldboy
as Young Woo-jin
2003

Hwayi: A Monster Boy
as Park Ji-won
2013

Love, Lies
as Kim Yoon-woo
2016

No Other Choice
as Chin-ho
2025

A Quiet Dream
as Man on a Motorcycle
2016

Money Show
as Man
2009

Hoya
as Ho-Ya
2012

Steel Rain 2: Summit
as Jo Seon-sa
2020

New Year Blues
as Jae-heon
2021
TV Appearances

Hospital Playlist Goes Camping
as Self
2021

Narco-Saints
as David Park
2022

Running
as Heo Ji-Man
2010

Hospital Playlist Throwback
as Self
2020

The Game Caterers
as Self
2021

Gu Family Book
as Park Tae-seo
2013

Reply 1994
as Chil Bong-yi
2013

Three Meals a Day: Doctors
as Self
2021

Warm and Cozy
as Baek Geon-woo
2015

What is Mom
as Yoo Yeon-Seok
2012

Possessed
as Baek Joong-chan
2009

위키드(WE KID)
2016
