List of mass shootings in Japan

This article is a list of mass shootings in Japan. Mass shootings are firearm-related violence with at least four casualties. Excluded are shootings and massacres associated with the Imperial Japanese Army, acts of war and other colonial conflicts.

The data includes casualties of perpetrators, including self-inflicted gunshot or shooting of a perpetrator by police. The treatment of perpetrator casualties is at variance to some but not all definitions of a mass shooting used in the United States. The inclusion of injured victims in the data is also at variance with some of the US definitions that only include dead victims. However, the above treatment is consistent with that used in other Wikipedia lists of mass shootings by country.

21st century DateLocationDeadInjuredTotalDescription30 August 2016Wakayama, Wakayama Prefecture2Including the perpetrator or suspect35A construction employee convicted of drug offenses opened fire at a workplace meeting on the day his jailing was scheduled, killing one person and wounding three others. The gunman killed himself the following day after barricading himself in a building.12 January 2010Habikino, Osaka Prefecture4Including the perpetrator or suspect042010 Habikino shooting: A man shot and killed three people at a bar, including the gunman's mother-in-law, before he committed suicide.6 November 2009Yokohama, Kanagawa Prefecture1Including the perpetrator or suspect34A yakuza shot and wounded three men during a discussion before hiding in a building and fatally shooting himself.14 December 2007Sasebo, Nagasaki Prefecture3Including the perpetrator or suspect692007 Sasebo shooting: A man shot and killed two people and wounded six others at a gym before he committed suicide at a nearby Catholic church.17–18 May 2007Nagakute, Aichi Prefecture134Nagakute hostage incident: A man took his ex-wife hostage in a siege that lasted 29 hours and resulted in the death of a SAT member of the Aichi Prefectural Police, as well as injuries to another officer, his ex-wife, and child.25 January 2003Maebashi, Gunma Prefecture426Four people were killed and two others injured in a gang-related shooting.

20th century DateLocationDeadInjuredTotalDescription17 October 1996Kitakata, Miyazaki Prefecture178A man armed with a shotgun killed a man and wounded six police officers during the ensuing chase, before being wounded himself.27 February 1984Yamaguchi, Yamaguchi Prefecture1341984 JSDF Yamaguchi training ground shooting incident: A Ground Self-Defense Force corporal shot four other soldiers during a training exercise, fatally wounding one. He was arrested five hours later.31 January 1980Kumano, Mie Prefecture8Five by gunfire311 : A farmer shot his two sisters, brother, and brother-in-law to death with a shotgun after killing his mother and two children with an axe. The gunman also wounded his wife and two neighbors before committing suicide.26 January 1979Sumiyoshi-ku, Osaka, Osaka Prefecture5611Mitsubishi Bank hostage incident: A multiple hostage bank robbery that left several people dead and wounded.6 November 1975Aki, Kōchi Prefecture6281975 Aki shooting: A man shot and killed six neighbours and injured two others.29 July 1965Zama, Kanagawa Prefecture and Shibuya, Tokyo11718Zama and Shibuya shootings: A double spree shootings in which a man shot and killed one police officer and wounded seventeen others.12 December 1953Nakatsugaru District, Aomori Prefecture8Seven by gunfire19: A man armed with a shotgun killed seven members of his family. He lit the house on fire, killing another. One person was wounded.30 December 1949Tokyo314An American soldier shot and killed two people, wounded another and killed himself.21 May 1938Kamo, Tsuyama, Okayama Prefecture31334Tsuyama massacre: A man killed 30 people, including his grandmother, with a Browning shotgun, katana, and axe, and seriously injured three others before killing himself with the shotgun in a spree killing. He was motivated by revenge for sexual and social rejection. It is the deadliest shooting by a lone gunman in Japanese history.

List of mass shootings in Japan

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