Park Yoon-seo (박윤서) is a South Korean film and television director, screenwriter, and assistant director. He gained international recognition as the co-director of the critically acclaimed Disney+ original supernatural series Moving (2023) alongside Park In-je.

Throughout his career in the Korean entertainment industry, Park worked on notable film and television projects, including serving as part of the directing department on the acclaimed action-thriller film The Hunt (2022). In 2026, he made his solo directing debut with the Netflix original occult horror series If Wishes Could Kill (Girigo). He is known for combining high-concept genre elements with compelling character-driven narratives.