Bagi, the Monster of Mighty Nature (大自然の魔獣 バギ, Daishizen no Majū Bagi) is a Japanese anime film that premiered on the Nippon Television network on August 19, 1984. It was written by Osamu Tezuka as a critique of the Japanese government's approval of recombinant DNA research that year. The film was streamed by Anime Sols as part of a crowdfunding campaign in 2013, and by RetroCrush in 2020.