South Kantō earthquakes (Japanese: 南関東直下地震) or Greater Tokyo Area earthquakes (Japanese: 首都直下地震) are general terms for major earthquakes that occurs repeatedly historically in the southern part of Kanto region (Tokyo, Kanagawa, Chiba, Saitama, etc, Greater Tokyo Area) in Japan.^[1][2][3] It has been announced that there is a 70% chance that earthquakes of about M7 will occur in the southern part of the Kanto region within the next 30 years.^[4][5][6]

You can help expand this article with text translated from the corresponding article in Japanese. (May 2021) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 1,053 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Japanese Wikipedia article at [[:ja:南関東直下地震]]; see its history for attribution. You may also add the template {{Translated|ja|南関東直下地震}} to the talk page. For more guidance, see Wikipedia:Translation.

Tokyo (Greater Tokyo Area) is one of the largest cities in the world (populated area), if a large earthquake occurs in the southern part of the Kanto region, the damage is expected to be enormous.^[7][8] And also, indirect damage caused by the earthquake is thought to extend to the entire world for a long period of time. It has been announced that if a large earthquake occurs in the Greater Tokyo Area, would kill 23,000 people in the worst case.^[9][10]

This is a list of major earthquakes that have caused damage to the southern part of the Kanto region in the past.

• 1293 Kamakura earthquake
• 1703 Genroku earthquake
• 1855 Edo earthquake
• 1894 Tokyo earthquake
• 1923 Great Kantō earthquake

• Sagami Trough