Wu, also referred to as Huainan (淮南), Hongnong (弘農), Southern Wu (南吳), or Yang Wu (楊吳), was a dynastic state of China and one of the Ten Kingdoms during the Five Dynasties and Ten Kingdoms period. It existed from 907 to 937 with capital at Jiangdu Municipality.

For most of its history, China was organized into various dynastic states under the rule of hereditary monarchs. Beginning with the establishment of dynastic rule by Yu the Great c. 2070 BC, and ending with the abdication of the Xuantong Emperor in AD 1912, Chinese historiography came to organize itself around the succession of monarchical dynasties. Besides those established by the dominant Han ethnic group or its spiritual Huaxia predecessors, dynasties throughout Chinese history were also founded by non-Han peoples.