Sanxingdui is an archaeological site and a major Bronze Age culture in modern Guanghan, Sichuan, China. Largely discovered in 1986, following a preliminary finding in 1927, archaeologists excavated artifacts that radiocarbon dating placed in the 12th–11th centuries BC. The type site for the Sanxingdui culture that produced these artifacts, archeologists have identified the locale with the ancient kingdom of Shu. The artifacts are displayed in the Sanxingdui Museum located near the city of Guanghan.
The discovery at Sanxingdui, as well as other discoveries such as the Xingan tombs in Jiangxi, challenges the traditional narrative of Chinese civilization spreading from the Central Plain along the Yellow River, and Chinese archaeologists have begun to speak of "multiple centers of innovation jointly ancestral to Chinese civilization."
Sanxingdui, along with the Jinsha site and the Tombs of boat-shaped coffins, is on UNESCO's list of tentative world heritage sites.