Suicide Club, known in Japan as Suicide Circle (自殺サークル, Jisatsu Sākuru), is a 2001 Japanese independent horror film written and directed by Sion Sono. The film explores a wave of seemingly unconnected suicides that strikes Japan and the efforts of the police to determine the reasons behind the strange behavior.
 Suicide Club was shown at numerous film festivals around the world and won the Jury Prize for "Most Ground-Breaking Film" at the 2003 Fantasia Film Festival. It developed a significant cult following over the years.
 The film takes place over six days, with footage from a fictional pop group "Dessert" opening and closing the film. The story begins with a concert held by Dessert, in which they perform a J-Pop song titled "Mail Me".
 On May 27, 54 teenage schoolgirls die by mass suicide in Tokyo by throwing themselves in front of an oncoming train. Shortly after, at a hospital, two nurses die by suicide by jumping out of a window. At both locations, rolls of skin are found, with the skin in the rolls matching that removed from the bodies of the dead. Three detectives—Kuroda (Ryō Ishibashi), Shibusawa (Masatoshi Nagase), and Murata (Akaji Maro)—are notified by a hacker named Kiyoko (Yoko Kamon) of a link between the suicides and a website that shows the number of suicides as red and white circles.
 On May 28, at a high school, a group of students jump off the roof during lunch, sending the city in search of a "Suicide Club". By May 29, the suicide boom has spread all over Japan. Mitsuko is on her way home when she gets hit by her boyfriend, Masa, who has thrown himself off a roof. Mitsuko is taken to the police station for questioning, where the police strip-search her and discover that she has a butterfly tattoo.
 On May 30, the police receive a call from a boy who warns that on that evening at 7:30, another mass suicide will take place at the same platform. The detectives organize a stake-out to prevent the event but there is no suicide. Meanwhile, individual and smaller-scale group suicides continue all over Japan, claiming many lives, including Kuroda's entire family. Kuroda receives a call from the boy who had warned about the 7:30 suicide, and Kuroda shoots himself after.
 Kiyoko is captured by a group led by a man named Genesis, whose hideout is a small subterranean bowling alley, where he resides with four glam-rock cohorts. During her capture, Genesis performs a song while a girl in a white sack is brutally raped and killed right in front of them. Kiyoko e-mails the authorities with information about Genesis.  On May 31, the police arrest Genesis, and it is assumed the leader of the "Suicide Club" has been caught.
 On June 1, Mitsuko goes to her boyfriend's home to return his helmet, where she notices pop group Dessert's posters on the wall and recognizes a pattern on the fingers of the group that corresponds to the letters on a telephone keypad spelling out the word "suicide". The boy from earlier calls to tell her there is no "Suicide Club" and invites her to a secret concert.
 On June 2, Mitsuko sneaks into the backstage area and sees a group of children in the audience, who ask her questions. Mitsuko impresses the children so they take her to a room where a strip from her skin is shaved off; it is the spot where the butterfly tattoo was.
 A new roll of skin ends up with the police, and detective Shibusawa recognizes the strip as the one with Mitsuko's tattoo. That evening, he sees Mitsuko at the train station and grabs her hand but she pulls away. She stares at Shibusawa as the train pulls into the station, and again after boarding the train. As the train pulls out, the ending credits begin, in which Dessert announces their disbandment and offers appreciation for their fans' support, before performing their final song, "Live as You Please".
 The film touches one of the most pressing problems of contemporary Japanese society: child and youth suicide rates that rise constantly since 1998. Japan culture has a very specific history with suicide and has a wide range of its concepts, starting with highly romanticized Seppuku and Shinjū. Social pressure is extremely high in modern Japan, failure, misfortunes, mental issues are highly stigmatized and condemned. Normally, a train company will charge the family of a person who jumps under the train, and banks encourage debtors to take out life insurance policies on themselves. The film explores the results of this attitude: loneliness, isolation, epidemic of low self-esteem and the trivialization of life, and the psychoses of 21st Century society. Sono blames media and how it results in snowballing peer pressure, he calls communication through the Internet ‘suicidal’.
 Suicide Club gained considerable notoriety in film festivals around the world for its controversial, transgressive subject matter and overall gruesome presentation. It developed a significant cult following over the years, and won the Jury Prize for "Most Ground-Breaking Film" at the 2003 Fantasia Film Festival.
 Virginie Sélavy of Electric Sheep Magazine wrote that "Suicide Club has been described as 'muddled' and Sono criticised for not making his satire of pop culture and denunciation of the media clear enough. But the ambiguity of the film is precisely what makes it interesting". Andrew Borntrager from ‘Cinephiles without borders’ calls the movie ‘a surreal cult classic full of existential dread and poignant social commentary’.
 According to Jenn Coulter from the Visual Cult Magazine, ‘it’s a visual smorgasbord of disturbing imagery’. He mentions that it is almost impossible to explain the plot, determine the genre of the film or even name the main characters, but overall it adds up to a disturbing yet important cinematic experience. On a contrary, Justine Peres Smith explains that Suicide Club has ‘thinly veiled leads’, but in ‘a world where characters want to cease their existence’ sticking to their individuality would be counterintuitive. According to Smith, Sono channels a direct opposite of almost all Western movies — instead of individualism, dictated by capitalism, he shows the desire to be consumed by the void.
 As of early 2006, the film has one prequel and a proposed follow-up. Noriko's Dinner Table (Noriko no Shokutaku) depicts events from before and after the happenings of Suicide Club and gives more insight on its predecessor. In 2006, Sono said, "I always wanted to make a trilogy but in reality it is very difficult."
 Jisatsu Saakuru: Kanzenban (自殺サークル　完全版, translated as Suicide Circle: The Complete Edition) was written by Sion Sono in April 2002. The book deals with the themes of Suicide Club and Noriko's Dinner Table, bringing the two plots closer. So far no plans for an English edition have appeared.
 A manga of the same title and written by Usamaru Furuya appeared at the same time as the movie's Japanese DVD release. Although Furuya's intention was to faithfully reproduce the film's plot, Sono asked him to write his own story. As a result, the Suicide Club manga is much more straightforward and easier to understand than the film, and features much more solid character development. It deals with the same opening scene, but there is a twist: out of the 54 suicidal girls, a survivor is reported: Saya Kota. Her best friend, Kyoko, must now unveil the secret of the Suicide Club and save Saya from falling deeper into it.