송강호

Park Gang-du

변희봉

Park Hie-bong

박해일

Park Nam-il

배두나

Park Nam-joo

고아성

Park Hyun-seo

오달수

The Monster (voice)

이재응

Se-jin

윤제문

Homeless Man

임필성

Fat Guevara

김뢰하

Yellow Suit at Funeral

고수희

Hostage nurse

김학선

Civilian Military Kim

Scott Wilson

Douglas

Paul Lazar

American Doctor

David Anselmo

Donald

백도빈

Fumigation Truck Skinny Man

최대성

Man from Duck Boat (uncredited)

최재섭

Detective Agency Subordinate 1 (uncredited)

Jung Seo-yoon

Woman with Long Hair (uncredited)

Philip Hersh

Additional Voices (voice) (uncredited)

정인기

Isolation Ward Doctor (uncredited)

Jeong Kang-hee

Mr. Yoon's Employee (uncredited)

김비비

Isolation Ward Nurse 1 (uncredited)

Kim Choo-wol

Woman crying (uncredited)

Kim Jin-seon

Woman from Couple (uncredited)

Kim Nan-hee

Woman from Duck Boat (uncredited)

권병길

Doctor from Isolation Ward 1 (uncredited)

권혁풍

Fisherman 1 (uncredited)

이동용

4th Mat 2 (uncredited)

Lee Jong-yoon

4th Mat 1 (uncredited)

민경진

Altar Security (uncredited)

박노식

Inquiry Officer

라미란

Woman Stomping Her Feet (uncredited)

신현종

Mr. Yoon's Friend (uncredited)

손영순

Grandmother from Bus (uncredited)

손진호

Doctor from Isolation Ward 2

유승목

Taxi Driver

유연수

District officer Mr. Jo (uncredited)

Seo Young-ju

Protester

고창석

Nurse

박진우

Isolation Ward Constable (uncredited)

박지환