Yūko Yajima is a Japanese television announcer and voice actor, primarily known for her work with the TV Asahi broadcasting network. She was born on July 27, 1982, in Kawasaki, Kanagawa Prefecture, and is a graduate of the Faculty of Literature at Chuo University.

Yajima began her career as an announcer for TV Asahi in 2005. Over the years, she has become a familiar face on Japanese television, serving as a sub-caster and narrator for news programs such as Super J Channel. She has also been a main cast member on the variety program Chii Sanpo and an assistant on the quiz show Zatsugaku-O.

While her primary career is in broadcast journalism, Yajima has also worked as a voice actor for anime. Her most notable voice role is Mari Kowada in the horror anthology series Kaidan Restaurant, which aired from 2009 to 2010. In this series, which is also known as Thriller Restaurant, her character Mari is one of the friends of the main protagonist, Ako Ozora. Her involvement in this series represents a crossover between her work as a television personality and anime voice acting. No other major voice roles or recurring collaborations with specific directors or studios are documented in available records. Similarly, there is no information on notable industry awards or other career achievements specific to her voice acting work.