Kazuo Oga (born 29 February 1952, in Akita Prefecture, Japan) is an anime art director and background artist. His resume includes Madhouse Studio and Studio Ghibli, having worked for major directors Hayao Miyazaki (Spirited Away, The Wind Rises), Isao Takahata (Grave of the Fireflies, Only Yesterday), Yoshiaki Kawajiri (Ninja Scrolls, Vampire Hunter D: Bloodlust) and Osamu Dezaki (Ashita No Joe, The Rose of Versailles).