Kim Si-A

Kim Si-A (born May 6, 2008) is a South Korean actress who began her career as a child performer. She has appeared in various films and television series, gaining recognition for her roles in both domestic and international productions.

Career

Kim made her acting debut in the 2018 film Miss Baek, portraying the character Kim Ji-Eun. Following her debut, she appeared in several notable projects, including the 2019 film Ashfall and the 2020 horror film The Closet. Her work in television includes a prominent role as Luna in the Netflix series The Silent Sea (2021) and as the younger version of Ashin in the special episode Kingdom: Ashin of the North.

In 2023, she appeared in the Netflix film Kill Boksoon as Gil Jae-Young and played the role of Yoon Ju-Won in the television series See You in My 19th Life. Her performance in the 2025 KBS2 drama Walking On Thin Ice earned her the Best Youth Actress award at the 2025 KBS Drama Awards.

Filmography

Film

Miss Baek (2018) – Kim Ji-Eun
The House of Us (2019) – Yoo-Mi
Ashfall (2019) – Soon-Ok
The Closet (2020) – Myung-Jin
Kill Boksoon (2023) – Gil Jae-Young
Good News (2025) – Interviewed student
Portrait of a Family (2026) – Hwang Dong-Joo

Television

Perfume (2019) – Min Jae-Hee (child)
The Silent Sea (2021) – Luna
Kingdom: Ashin of the North (2021) – Ashin (young)
See You in My 19th Life (2023) – Yoon Ju-Won
Sweet Home 2 (2023) – Girl
Sweet Home 3 (2024) – Girl
Walking On Thin Ice (2025) – Park Su-A
If Wishes Could Kill (2026) – Do Hye-Ryung