Tunnel

Lee You-young

Shin Jae-Yi

Jo Hee-bong

Jeon Sung-Sik

Kim Byung-chul

Kwak Tae-Hee

Kang Ki-young

Song Min-Ha

Kim Min-sang

Mok Jin-Woo

Cha Hak-yeon

Park Gwang-Ho

Kim Dong-young

Jun Sung Shik [Young]

Lee Xia

Shin Yun Suk

Moon Sook

Hong Hye Won

Heo Sung-tae

Jung Ho Young

Ham Seong-min

Jung Ho Yeong [Young]

Yang Joo-ho

Oh Ji Hoon [Reporter, 1986] | [Taxi Driver, 2017]

No Tae-yeob

Mok Jin Woo [Young]

Kim Jung-hak

Kim Wan

Yoon Jin-sol

Da Yeong's friend

Cho Seung-yeon

Police Station Section Head Chief

Yoo Dam-Yeon

Lee Nan Young

Choi Seung-hoon

Mok Jin Woo [Child]

Hong Gi-jun

Detective

Seok Bo-bae

Seo Hee Soo

Park Myung-shin

Lee Sun Ok

Lee Young-hee

Jung Sook's mother

Han Yeo-wool

Hwang Choon-Hee

Song Yeong-jae

Kim Tae Soo

Ryu Tae-ho

Jang Yeong Cheol

Jo Si-nae

Kim Young Ja

Kim Hye-yoon

Kim Young Ja [Young]

Jeong Seok-yong

Dr. Kim [Forensic Pathologist, 1986]

Kim Jong-ho

Tailor shop president

Oh Youn-hong

Madam Jeong [Teahouse manager]

Jung Yi-rang

Lee Geum Soon

Choi Won-hong

Yoon Dong Woo

Jung Soon-won

Thief

Choi Myeong-bin

Yoon Soo Jung

Woo Hyeon

Go Man Seok

Jeon Jin-gi

Kim In Hwan

Jin Yong-uk

Lee Dae Hwan

Lee Dong-jin

Hwang Do Kyung

Im Kang-sung

Ma Young Gil

Seo Eun-ah

Kim Mi Soo

Jung Han-bi

Yoon Yeong Joo

Ahn Yong-jun

Kim Hee Joon

Park Jeong-hak

Senior police officer

Lee Yong-nyeo

Yoo Ok Hee

Song Jae-ryong

Kim Kyung Tae

Joey Albright

LT Jim Headley [Tiffany's soldier boyfriend]

Suh Yun-a

Pregnant woman

Kim Min-kyung

Ah Ra's mother

Kim Young-hee

Gambler

Jo Hyun-Jin

Jae Yi's student

Ahn Su-bin

Lee Seo Yeon

Park Jae-Won

Photo Journalist