Aoi Tada (多田葵 Tada Aoi, born 3 July 1981 in Tokyo) is a Japanese singer-songwriter and former voice actress and musical actress. She formerly belonged to Gekidan Himawari. Her nickname is "Mamoru Tada". Her most noted voice role is that of Cowboy Bebop's Edward Wong Hau Pepelu Tivrusky IV. She also performed an insert song to the series, "Wo Qui Non Coin". In March 2005, she signed on to Moon-Bunny Entertainment and began her singer-songwriting career. She has performed the theme songs for Gunslinger Girl: Il Teatrino and Angel Beats!.