Shiki-Jitsu (式日, Shikijitsu, lit. "ritual day" or "ceremonial day"), also known as Ritual, is a 2000 Japanese psychological drama film written and directed by Hideaki Anno. It is based on the novella Tōhimu by Ayako Fujitani, who also stars alongside Shunji Iwai.

Like Anno's previous film Love & Pop (1998), it is an art film with experimental elements diving into the minds of its main characters. Shiki-Jitsu takes place over 33 days and follows the relation between an apathetic film director (Iwai) and an odd young woman (Fujitani) who start a bizarre friendship after a chance meeting and they try to work their way out of a collective emotional funk. Michael Ordona of the Los Angeles Times reported the film had "dark themes of mental illness and suicidal ideation". Shiki-Jitsu won an award for Best Artistic Contribution at the 13th International Film Festival in Tokyo.