Park Si-eun

Park Si-eun is a South Korean singer and actress, best known as a member of the girl group STAYC. Before her music career, she built a reputation as a child actress, winning the Best Young Actress award at the 2018 SBS Drama Awards for her role in Still 17. Today, she balances group activities with occasional acting projects, embodying STAYC's teen-crush concept with her bright stage presence and vocal versatility.[edit]

Park Si-eun was born on August 1, 2001, in South Korea. She started acting as a child, landing her first role in 2014. She trained at JYP Entertainment as both an actress and idol trainee, appearing in several TV dramas and films. Her breakthrough as an actress came in 2018 when she played the younger version of Woo Seo-ri in Still 17, earning her the Best Young Actress award at the SBS Drama Awards. In 2019, JYP Actors shut down, prompting her to leave the company. She then signed with High Up Entertainment in December 2019, where she prepared to debut as a singer.[edit]

Park Si-eun debuted as a member of STAYC in November 2020 with the single So Bad. The group quickly gained attention for their strong vocals and catchy songs. Si-eun contributed as a lead vocalist, and STAYC released hits like Stereotype (2021) and Young-Luv.com (2022). She also returned to acting with a cameo in the web drama XX (2020) and participated in variety shows. As of 2026, she continues to promote with STAYC and explore individual opportunities.[edit]

Park Si-eun is seen as a versatile performer who transitioned smoothly from child actress to K-pop idol. Fans appreciate her warm, approachable personality and her consistent improvement in singing and dancing. She often posts behind-the-scenes photos on Instagram, connecting with SWITH, STAYC's fandom. Her style leans toward cute and youthful, matching the group's image.[edit]

STAYC's fanbase, SWITH, distinguishes itself through a tightly knit digital ecosystem that prioritizes synchronized streaming and vocal support for the group's unique teen-crush concept. The name SWITH, derived from "sway" and "with," reflects a philosophy of moving together through all seasons, a sentiment echoed in the community's vibrant use of emerald green to celebrate members like Park Si-eun. Fans actively engage via Weverse and Instagram, where Si-eun encourages connection with specific slogans like "To love me💚," creating a personalized bridge between idol and audience. This organized enthusiasm has driven immediate chart success since the group's 2020 debut, turning every release into a collective event. Despite her long history as a child actress and the high-profile lineage as the daughter of trot legend Park Nam-jung, Si-eun's fame is anchored in her current status as a main vocalist who balances acting and music seamlessly. The iFANN Global Fame Engine evaluated Park Si-eun in August 2026 but determined she currently holds no placement in the published rankings, including the Global Top 1,000 or any Top-100 scope list.[edit]

Known as the group's mood maker, Si-eun brings cheerful energy to STAYC with a warm personality that endears her to fans. She is an avid fan of Disney movies and often shares her artistic side by drawing in her free time. On variety shows, she has delighted audiences by imitating animal sounds, a quirky talent she keeps close to her heart. Her favorite food is tteokbokki, a staple she frequently enjoys during breaks. Before entering the entertainment industry, she once expressed a desire to become a teacher, a dream that contrasts with her current life on stage. A defining chapter of her career lore involves her family heritage; she is the daughter of famous trot singer Park Nam-jung. In December 2025, media outlets highlighted a special showcase featuring the father-daughter duo, celebrating their musical synergy. Another notable aspect of her background is her longevity as a trainee; having started as an actress in 2014 before joining High Up Entertainment in 2019, she brought a mature stage presence to her 2020 debut with "So Bad." While recent news snippets occasionally confuse her identity with other individuals named Park Si-woo regarding academic achievements, the core story remains her successful transition from child star to K-pop icon.[edit]

Park Si-eun has not publicly shared details about her parents or siblings. She keeps her family life private, consistent with most K-pop idols. She has a pet dog named Kkomi, whom she often features on Instagram.[edit]

Si-eun is associated with her STAYC groupmates: Sumin, Sieun, Isa, Seeun, and Yoon. She works closely with producer Black Eyed Pilseung at High Up Entertainment.[edit]

As of 2026, Park Si-eun has not publicly confirmed any romantic relationships. She has kept her personal life private, focusing on her career. No dating rumors have been substantiated.[edit]

Per iFANN's editorial analysis, Park Si-eun's net worth in 2026 stands at $5 million. This financial standing stems from her multifaceted role within STAYC, generating revenue through music sales, concert tours, and lucrative endorsement deals with major brands like KFC and Lotte. Beyond group activities, her individual contributions to variety show appearances and social media promotions further bolster her earnings. The figure reflects steady growth since STAYC's debut in 2020, marking her evolution from a promising child actress to a top-tier idol with significant commercial appeal.[edit]

Park Si-eun won the Best Young Actress award at the 2018 SBS Drama Awards for her performance in Still 17.[edit]