Osamu Kobayashi (小林 治, Kobayashi Osamu) (January 10, 1964 – April 17, 2021) was a Japanese animator, illustrator, mechanic designer, and animation director. He originally directed avant-garde shorts and music videos for Studio 4°C and has more recently done two TV series for Madhouse Studios. Not to be confused with the animation director of the same name who founded Ajia-do Animation Works.