Wataru Mimura (三村 渉 Mimura Wataru?, born 1954 in Mie Prefecture, Japan) is a Japanese screenwriter with a career largely focused around Toho's Godzilla series.
Graduating from the College of Art of Nihon University, Mimura won Sanrio Screenwriter Award in 1982, which led to writing such theatrical films such as Shochiku's Green Boy and V-Cinema work for Toei Company. Mimura was chosen to pen the script for Godzilla vs. Mechagodzilla II (1993), as well as Toho's Yamato Takeru (1994) soon after. In 1999, Toho again turned to Mimura when they revived the Godzilla franchise. The resulting film, Godzilla 2000 (1999), was not a great box office success, but Mimura continued to write for the remainder of the Millennium series, as he scripted four out of the six films, including Godzilla: Final Wars (2004).