Ju-On: The Grudge is a 2002 Japanese supernatural horror film written and directed by Takashi Shimizu. It is the third installment in the Ju-On series and the first to be released theatrically. It stars Megumi Okina, Misaki Ito, Takashi Matsuyama and Yui Ichikawa.

Japanese horror is horror fiction derived from popular culture in Japan, generally noted for its unique thematic and conventional treatment of the horror genre differing from the traditional Western representation of horror. Japanese horror tends to focus on psychological horror, tension building (suspense), and the supernatural, particularly involving ghosts (yūrei) and poltergeists. Other Japanese horror fiction contains themes of folk religion such as possession, exorcism, shamanism, precognition, and yōkai. Media in which the genre of Japanese horror fiction can be found include artwork, theater, literature, film, anime and video games.