Rumi Shishido (宍戸留美, Shishido Rumi, born November 6, 1973) is a Japanese singer and voice actress from Fukuoka Prefecture, Japan. Shishido debuted as an idol singer with Sony Records in 1990 with the single "Cosmic Rendezvous." In 1992, she left her management and began releasing music independently.

Around the same time Shishido left her management, she also debuted as a voice actress, with her breakthrough role being Mikako Koda from Neighborhood Story. Other notable roles she has played include Onpu Segawa from Ojamajo Doremi, Rosemary Applefield from Ashita no Nadja, Viper from Reborn!, M.O.M.O. from the Xenosaga series, Diana and Luna from the Jewelpet series, and June Amou from Pretty Rhythm: Rainbow Live and King of Prism.