Park Si-eun, known mononymously as Sieun, is a South Korean singer and actress under High Up Entertainment. She is a member of the girl group STAYC and a former member of the trainee team i-Teen.
She made her acting debut in the children's television series Pluto Squad (2014).
![STAYC TOUR [STAY TUNED] in Sydney poster](/_next/image?url=https%3A%2F%2Fimage.tmdb.org%2Ft%2Fp%2Fw500%2FfsAVgRn8lIjFdweHpq6uODxhK8r.jpg&w=1920&q=75)
![STAYC 1st World Tour [TEENFRESH] in Seoul poster](/_next/image?url=https%3A%2F%2Fimage.tmdb.org%2Ft%2Fp%2Fw500%2F3QVbLW4FOW9xLg83CpDIIuoyyub.jpg&w=1920&q=75)
