Sin-Hui Park is a Korean voice actor known for dubbing a wide array of roles in the Korean-language versions of numerous anime series. Her work spans multiple genres and includes many popular and long-running shows.

Park's career is marked by a significant volume of voice work, bringing a diverse range of characters to life for Korean audiences. She has voiced protagonists, supporting characters, and comedic roles across various series. A substantial portion of her known credits come from anime dubs produced for the Korean market.

Among her most recognized roles is Siesta, the maid from the The Familiar of Zero franchise. She provided the voice for this character across multiple seasons, including The Familiar of Zero, The Familiar of Zero: Knight of the Twin Moons, and The Familiar of Zero: Rondo of Princesses. Another prominent role is Yuka Morisaki, a character she voiced in both the I''s OVA and I''s Pure. In the comedy series Ayumayu Theater, she voiced the character Akane Suzumiya. Her repertoire also includes the role of Ringo Kinoshita in the Fairy Musketeers television series.

Beyond these, Park's filmography demonstrates her versatility and extensive involvement in the industry. She voiced Koneko Tōjō in High School DxD, Chiaki Minami in the Minami-ke series, and multiple characters in Gurren Lagann, including Boota, Darry, and Kiyal. Her work also includes roles in major titles such as Blood+ (as Diva and Mao Jahana), Darker than Black (as Alice Wang), Kimi ni Todoke (as Tomomi Endou), Last Exile (as Alister Agrew and Dio Eracles), Lucky Star (as Miki Hiiragi and Nanako Kuroi), the Shakugan no Shana series (as Hecate, Marianne, Sorath, and Tiamat), and the Please! franchise (as Kaede Misumi and Miina Miyafuji).