Full cast of Who Is She

Kim Hae-sook

Oh Mal-soon

12 episodes

Jung Zi-so

Oh Doo-ri

12 episodes

Jung Jinyoung

Daniel Han

12 episodes

Chae Won-bin

Choi Ha-na

12 episodes

Sowon

Chan Mi

12 episodes

Lee Hwa-Kyum

Li Na

12 episodes

Lee Gwang-hee

Sang-joo

12 episodes

Yoo Jung-hoo

Park Jun

12 episodes

Ahn Se-min

Seongmun (Young)

12 episodes

Jung Bo-seok

Park Gap Yong

12 episodes

Seo Young-hee

Ban Ji Suk [Choi Ha-na's mother, Choi Min-seok's wife, Oh Mal-soon's daughter]

12 episodes

In Gyo-jin

Choi Min-seok

12 episodes

Cha Hwa-yeon

Kim Ae Sim

12 episodes

Lee Dal

Hoi

12 episodes

Oh Ji-yeon

Joon Hee

12 episodes

현재연

Soo Jin [member of the group Element]

12 episodes

Lee Ji-hyeon

Min Ah

12 episodes

낸시 양

Olla [member of the group Element]

12 episodes

장서원

Jay [member of the group Element]

12 episodes

Kim Sung-Won

Park Ja Young [Park Gap Yong's son]

12 episodes

Park Young-soo

Park Young Joon

12 episodes

Hong Seo-jun

Park Young Suk [Park Young Joon's brother]

12 episodes

Shin Shin-ae

Shin Soon Ae

12 episodes

Lee Yong-yi

Jang Gwi Rye

12 episodes

Shin Yeon-sook

Oh Choon Boon

12 episodes

Choi Jung-woo

Byun Kang Suk

12 episodes

Kim Byeong-ok

Mysterious taxi driver

12 episodes

Kim Ji Yoo

Oh Mal-soon [young]

12 episodes

Choi Hui-seung

MNS PD

1 episode