 | Song Kang-ho als Park Gang-du |
 | Byun Hee-bong als Park Hie-bong |
 | Park Hae-il als Park Nam-il |
 | Bae Doona als Park Nam-joo |
 | Go A-sung als Park Hyun-seo |
 | Oh Dal-su als The Monster (voice) |
 | Lee Jae-eung als Se-jin |
 | Lee Dong-ho als Se-joo |
 | Yoon Je-moon als Homeless Man |
 | Yim Pil-sung als Fat Guevara |
 | Kim Roi-ha als Yellow Suit at Funeral |
 | Koh Soo-hee als Hostage nurse |
 | Kim Hak-seon als Civilian Military Kim |
 | Scott Wilson als Douglas |
| Brian Rhee als Young Korean Doctor |
 | Paul Lazar als American Doctor |
 | David Anselmo als Donald |
 | Baek Do-bin als Fumigation Truck Skinny Man |
| Martin Lord Cayce als U.S. Senator (uncredited) |
 | Choi Dae-sung als Man from Duck Boat (uncredited) |
| Choi Doo-yeong als Man on Blind Date (uncredited) |
 | Choi Jae-sup als Detective Agency Subordinate 1 (uncredited) |
 | Jung Seo-yoon als Woman with Long Hair (uncredited) |
 | Philip Hersh als Additional Voices (voice) (uncredited) |
 | Jeong In-gi als Isolation Ward Doctor (uncredited) |
| Jeong Hyeong-Ho als 4th Mat 3 (uncredited) |
| Ji Ha-geon als Camera Phone Man (uncredited) |
| Moon Hee-Ra als Camera Phone Woman (uncredited) |
 | Jeong Kang-hee als Mr. Yoon's Employee (uncredited) |
 | Kim Bi-bi als Isolation Ward Nurse 1 (uncredited) |
 | Kim Choo-wol als Woman crying (uncredited) |
| Kim Da-yeon als 5th Mat Woman (uncredited) |
| Kim Hyo-sun als Quarantine Hospital Nurse 2 (uncredited) |
 | Kim Jin-seon als Woman from Couple (uncredited) |
 | Kim Nan-hee als Woman from Duck Boat (uncredited) |
| Kim Sang-jo als Old Security Guard (uncredited) |
| Kwon Bang-hyeon als Bride-to-be (uncredited) |
 | Kwon Byung-gil als Doctor from Isolation Ward 1 (uncredited) |
 | Kwon Hyeok-pung als Fisherman 1 (uncredited) |
 | Lee Dong-yong als 4th Mat 2 (uncredited) |
| Lee Eung-jae als Man from Couple (uncredited) |
| Lee Hoon-jin als Fat Man (uncredited) |
 | Lee Jong-yoon als 4th Mat 1 (uncredited) |
| Lee Seung-jin als Girl's Father (uncredited) |
 | Min Kyung-jin als Altar Security (uncredited) |
| Clinton Morgan als Agent Yellow (uncredited) |
| Park Jeong-gi als Fumigation Truck Dyed-hir Man (uncredited) |
| Park Kyeong-mok als Groom-to-be (uncredited) |
 | Park No-shik als Inquiry Officer |
 | Ra Mi-ran als Woman Stomping Her Feet (uncredited) |
| Seo Ha-neul als Exchanged Girl (uncredited) |
| Shin Seung-ri als Donald's Girlfriend (uncredited) |
 | Shin Hyeon-jong als Mr. Yoon's Friend (uncredited) |
 | Son Young-soon als Grandmother from Bus (uncredited) |
 | Son Jin-ho als Doctor from Isolation Ward 2 |
| Song Kyeong-ha als Woman on Blind Date (uncredited) |
 | Yoo Seung-mok als Taxi Driver |
 | Yoo Yeon-soo als District officer Mr. Jo (uncredited) |
 | Seo Young-ju als Protester |
 | Ko Chang-seok als Nurse |
 | Park Jin-woo als Isolation Ward Constable (uncredited) |
| Choi Yong-bae | Producer |
| Kim Hyung-koo | Director of Photography |
| Ryu Seong-hie | Production Design |
| Bong Joon-ho | Director |
| Baek Chul-hyun | Screenplay |
| Lee Byung-woo | Original Music Composer |
| Bong Joon-ho | Screenplay |
| Junyoung Jang | Co-Producer |
| Kim Sun-min | Editor |
| Karen Kelly | Visual Effects Coordinator |
| Cho Sang-kyung | Costume Design |
| Kim Byung-seo | Camera Operator |
| Song Jong-hee | Makeup & Hair |
| Yang Hong-sam | Set Decoration |
| Cho Neung-yeon | Producer |
| Kim Hyun-woo | Co-Executive Producer |
| Lee Yong-gi | Colorist |
| Han Jae-min | Colorist |
| Kwak Jung-ae | Costume Design |
| Kim Woo-taek | Executive Producer |
| Park Jae-wook | VFX Artist |
| John Cox | Animatronics Supervisor |
| Kyung-bo Yeo | Steadicam Operator |
| John Jackson | Casting |
| David Renn | Sculptor |
| Liam Hardy | Painter |
| Liam Hardy | Sculptor |
| Sean Garnhart | Sound Designer |
| Katharine Kim | Co-Executive Producer |
| Toby Barron | Sculptor |
| Richard Mueck | Painter |
| Steven Parker | Sculptor |
| Yasuaki Nakajima | ADR Supervisor |
| Toby Barron | Painter |
| Steven Parker | Painter |
| Joon H. Choi | Co-Executive Producer |
| Lewis Taewan Kim | Co-Producer |
| Coll Anderson | Sound Designer |
| Bill Orrico | Sound Effects Editor |
| Richard Mueck | Sculptor |
| Jeong Won-jo | Production Coordinator |
| Lee Hee-eun | Special Effects Makeup Artist |
| Choi Tae-young | Sound |
| Heui-cheol Jang | Special Effects |
| David Renn | Painter |
| Jeong Tae-sung | Executive Producer |
| Miky Lee | Executive Producer |
| Rob Nokes | Sound Effects |
| Hah Jun-won | Screenplay |
| Jung Young-min | Lighting Director |
| Lee Kang-san | Lighting Director |
| Kim Jun-su | Assistant Director |
| Yang Gil-yeong | Fight Choreographer |
| Park Yong-gi | Sound Re-Recording Mixer |
| Jung Sung-jin | Visual Effects Director |
| Seo Myeong-Seok | Stunts |
| Yang Hae-gil | Stunts |
| Kwon Tae-ho | Stunts |
| Lee Seung-chul | Production Sound Mixer |
| Jang Seok-ho | Props |
| Kang Jong-ik | VFX Supervisor |
| Kevin Rafferty | VFX Supervisor |
| Kwak Tae-yong | Special Effects Makeup Artist |
| Hwang Hyo-kyun | Special Effects Makeup Artist |
| Joo Byeol | Adaptation |
| Kim Won-jung | Stunts |
| Seo Ji-oh | Stunts |
| Lee Tae-yeong | Stunts |
| Kim Byeong-gi | Special Effects Supervisor |
