Yūko Satō is a Japanese voice actress born on December 25 in Kanagawa Prefecture, Japan. She is affiliated with the talent agency Aksent and has been active in the industry since the 1990s. Her career includes a wide range of roles in anime series, films, video games, and Japanese dubbing of foreign productions.

Satō is perhaps best known for her lead role as Yoh Asakura in the 2001 anime adaptation of Shaman King. Her performance in this series stands as one of her most recognized works. Another significant role is that of Lust, the Homunculus, in the original Fullmetal Alchemist anime and its related follow-ups, such as Fullmetal Alchemist: Premium Collection. Her versatility is also shown in her portrayal of Juri Wu Nien in Mobile Suit Gundam Seed and the younger version of the character Muruta Azrael in Mobile Suit Gundam Seed Special Edition.

Beyond these prominent parts, Satō has voiced a diverse array of characters across many genres. She plays the role of Hakan Akbal in the series Flag and Issa in Animal Yokocho. In Gad Guard, she voices Takumi Kisaragi, and in Black Jack, she is Sharaku. Her other notable anime credits include Kenichi in Astro Boy, Holland Novak as a teenager in Eureka Seven, Lin in Gun X Sword, Oryou in Gintama, and Raimi in SD Gundam Force. She has also had roles in long-running series such as Naruto, InuYasha, Crayon Shin-chan, and Doraemon. In video games, she has reprised some of her anime roles and appeared as Miisha in Tales of Rebirth. Her voice acting work also extends to Japanese dubbing for Hollywood productions, where she has voiced characters like Lois Lane in various animated projects.

Satō is represented by the agency Aksent, and her career continues to be defined by these memorable character performances from the 2000s.