Samurai Princess (サムライプリンセス 外道姫, Samurai purinsesu: Gedō hime) is a 2009 Japanese film directed by Kengo Kaji, described as ero guro action film.

Samurai Princess takes place sometime, somewhere in an alternate universe version of feudal Japan, where people live together with highly developed mechanical dolls called "Mechas".

However, excessively developed mechanical dolls start causing harm to human society, leading to ghastly bloodshed happening all over the place.

Under the circumstances, Kyoraku, a mad scientist, creates a female ninja mechanical doll.

On June 20, 2009 Samurai Princess appeared in the New York Asian Film Festival.