Dayu may refer to: * Dayu, Banmauk, Sagaing Region, Burma * Yu (Stargate), a Goa'uld System Lord in the TV show ''Stargate SG-1'' * Softstar (大宇資訊), a Chinese language video game developer and publisher.

China

* Yu the Great (大禹), legendary monarch of the Xia Dynasty * Dayu County (大余县), in Ganzhou, Jiangxi * Dayu, Handan (大峪镇), a town in Fengfeng Mining District, Handan, Hebei * Dayu, Jianghua Yao County (大圩镇), a town in Jianghua Yao Autonomous County, Hunan * Dayu, Rudong County (大豫镇), a town in Rudong County, Jiangsu * Dayu, Yangqu County (大盂镇), a town in Yangqu County, Shanxi

Iran

* Dayu, Ardabil, a village in Ardabil Province, Iran * Dayu, Bushehr, a village in Bushehr Province, Iran {{disambiguation, geo