or Mushi Pro for short, is a Japanese animation studio headquartered in Fujimidai, Nerima, Tokyo, Japan. It previously had a headquarters elsewhere in Nerima.

The studio was headed by manga artist Osamu Tezuka. Tezuka started it as a rivalry with Toei Animation, his former employer, after Tezuka's contract with Toei expired in 1961. The studio pioneered TV animation in Japan, and was responsible for many successful