Yū Asakawa (Japanese: 浅川 悠, Hepburn: Asakawa Yū, born March 20, 1975) is a Japanese voice actress from Tokyo, Japan. She also provides the voice samples for Crypton Future Media's Vocaloid character, Megurine Luka. Asakawa is currently a freelance voice actress and was previously attached to Arts Vision (as of October 1, 2014).
She was previously married to fellow voice actor Showtaro Morikubo but the two are now divorced. She served as a co-host of an internet webshow Otaku Verse Zero with Patrick Macias, a previous editor-in-chief of Otaku USA.
She is best known for her role as Rider and her various other incarnations of the character from the Fate/stay night franchise.