
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).
Filmography35 titles

A-List to Playlist

Hospital Playlist

Youth Over Flowers

Mr. Sunshine

Tastefully Yours

Whenever Possible

When the Phone Rings

Running Man

You Quiz on the Block

Dr. Romantic

Oldboy

A Bloody Lucky Day

Resident Playbook

Love, Lies

Reply 1994

Busted!

Narco-Saints

The Beauty Inside

A Werewolf Boy

Amazing Saturday

No Other Choice

Hwayi: A Monster Boy

Re-encounter

Phantom Lawyer

Architecture 101

Mood of the Day

Steel Rain 2

The Royal Tailor

Gu Family Book

My Heart Puppy

New Year Blues

Perfect Proposal

Warm and Cozy

The Interest of Love

Horror Stories