Yuu Watase (渡瀬 悠宇, Watase Yuu, born March 5, 1970 in Osaka) is a Japanese shōjo manga artist. She received the Shogakukan Manga Award for shōjo for Ceres, Celestial Legend in 1997. Since writing her debut short story "Pajama de Ojama" ("An Intrusion in Pajamas"), Watase has created more than 80 compiled volumes of short stories and continuing series.