The 921 earthquake (), also known as the 1999 Jiji earthquake () or simply 921 (), was a magnitude 7.6 earthquake which occurred at 1:47 local time (17:47 UTC) on September 21, 1999 in Jiji (Chichi, 集集), Nantou County, Taiwan. 2,416 people were killed, over 11,000 seriously injured, and NT$300bn worth of damage was done. It was the second-deadliest quake in recorded history in Taiwan, after the 1935 Hsinchu-Taichung earthquake. Rescue groups from around the world joined local relief workers and the ROC military in digging out survivors, clearing rubble, restoring essential services and distributing food and other aid to the more than 100,000 people made homeless by the quake. The disaster, dubbed the "Quake of the Century" by local media, had a profound effect on the economy of the island and the consciousness of the people, and dissatisfaction with government's performance in reacting to it was said by some commentators to be a factor in the unseating of the ruling Kuomintang party in the 2000 Presidential Election.

[Last contributor : Kuaile Long , Content under LGPL licence]