Oldboy

Choi Min-sik

Oh Dae-su

Yoo Ji-tae

Lee Woo-jin

Kang Hye-jung

Mi-do

Kim Byeong-ok

Mr. Han

Ji Dae-han

No Joo-hwan

Oh Dal-su

Park Cheol-woong

Lee Seung-shin

Hypnotist

Yoon Jin-seo

Lee Soo-ah

Oh Tae-kyung

Young Dae-su

Yoo Yeon-seok

Young Woo-jin

You Il-han

Young Joo-hwan

Lee Young-hee

Clock Store Lady

Kim Young-ae

Elevator Lady

Lee Mi-mi

Dental Nurse

Han Jae-duk

Night Teacher

Kwak Jung-ae

Nun Teacher

Kim San

Electronics Store Owner

Jang Chae-soo

Woo-jin's Doctor

Im Seol-a

Nurse

Syd Lim

Rude Man