Seo Da-hye is a South Korean voice actress born on September 30, 1990. She made her debut in the industry in 2015 as part of the 40th recruiting class for KBS, one of South Korea's major broadcasting companies, though she currently works as a freelance voice actor.

Her body of work includes roles in various anime series dubbed into Korean. She is known for providing the voice of Makina Kurusu in the Japanese anime series Milky Subway: The Galactic Limited Express. This series, originally titled Ginga Tokkyu Milky Subway, is a CGI anime short produced by Shin-Ei Animation that premiered in July 2025. The role of Makina is a notable credit in her career.

Throughout her voice acting career, Seo Da-hye has collaborated with a wide range of fellow voice actors. Professional tracking indicates she has performed alongside over one hundred and eighty other voice actors across various projects. However, no specific recurring creative partnerships with particular directors, studios, or fellow actors are documented. Similarly, beyond her debut and her role in the Milky Subway series, no other major voice roles or formal industry accolades are recorded.