Full cast of Still 17

Yang Se-jong

Gong Woo-Jin

32 episodes

Shin Hae-sun

Woo Seo-Ri

32 episodes

Ahn Hyo-seop

Yoo Chan

32 episodes

Ye Ji-won

Jennifer

32 episodes

Wang Ji-won

Kim Tae-Rin

32 episodes

Jung Yoo-jin

Kang Hee-Soo

32 episodes

Yoon Sun-woo

Kim Hyeong-Tae

32 episodes

Sieun

Woo Seo-Ri (young)

32 episodes

Yoon Chan-young

Gong Woo-Jin (young)

32 episodes

Ahn Seung-gyun

Jin-hyun

32 episodes

Jo Hyun-sik

Han Duk-soo

32 episodes

Lee Do-hyun

Dong Hae-Beom

32 episodes

Kim Min-Seo

32 episodes

Im Byeong-gi

Gong Yong Hwan [Gong Woo Jin's father]

32 episodes

Park Hyun Jung

Kim Tae-rin's Mother

32 episodes