Mute Witness (German: Stumme Zeugin, Russian: Немой свидетель) is a 1995 horror thriller film written, directed and produced by Anthony Waller, his feature film debut. It stars Marina Zudina, Fay Ripley and Oleg Yankovsky and features a brief cameo appearance by Alec Guinness, his final film role in a theatrically-released film. The plot follows a mute American makeup artist working on a slasher film in Moscow, who is pursued by a crime organization making and dealing snuff films after she stumbles upon one of their film sets and witnesses a murder.

A British-German-Russian co-production, the film premiered at the 1995 Sundance Film Festival. It was released in Germany on September 28, 1995 and in the United Kingdom on January 19, 1996. It received generally positive reviews from critics, and was nominated for Best Horror Film and Best Actress (for Marina Zudina) at the 22nd Saturn Awards. It won the Special Jury Prize at the Festival international du film fantastique de Gérardmer, with Marina Zudina receiving a special mention for her performance.