Mori Masaki (真崎 守, Masaki Mori; born March 10, 1941 in Yokohama) is a Japanese manga artist, screenwriter and director.

Masaki's career as an animator began in 1963 at Mushi Production, where he was involved in Kimba the White Lion. After a few more works, he left the studio in 1968 and dedicated himself to his work as a mangaka. In 1979, he returned to the film and worked at Studio Madhouse as a director and screenwriter. He directed Natsu e no Tobira and Haguregumo, later wrote the screenplay for the film adaptation of the manga Barefoot Gen and the sci-fi adventure Toki no Tabibito: Time Stranger. In 1986, Masaki retired from anime, although he continued his manga career into the 90s.