Toshitsugu Saida (born July 5, 1949 in Yamaga, Kumamoto Prefecture, Japan) is an old-time animator, character designer and animation supervisor behind many of Oh! Production's works. Toshitsugu joined the studio soon after it was established and became one of its star animators. He singlehandedly drew all of the key animation for the 63-minute film Gauche the Cellist (1982).