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](/img/t/p/w342/fsAVgRn8lIjFdweHpq6uODxhK8r.jpg?dpl=8d4ab830d16b3b8d08f93d842f7130490e1f3c4c)
![STAYC 1st World Tour [TEENFRESH] in Seoul](/img/t/p/w342/3QVbLW4FOW9xLg83CpDIIuoyyub.jpg?dpl=8d4ab830d16b3b8d08f93d842f7130490e1f3c4c)
![STAYC TOUR [STAY TUNED] in Sydney](/img/t/p/w185/fsAVgRn8lIjFdweHpq6uODxhK8r.jpg?dpl=8d4ab830d16b3b8d08f93d842f7130490e1f3c4c)
![STAYC 1st World Tour [TEENFRESH] in Seoul](/img/t/p/w185/3QVbLW4FOW9xLg83CpDIIuoyyub.jpg?dpl=8d4ab830d16b3b8d08f93d842f7130490e1f3c4c)
