Eastern Wu, also known as Sun Wu, is one the three states competing for control of China during the Three Kingdoms period after the fall of the Han Dynasty.

It is based in the Jiangnan (Yangtze River Delta) region of China.

During its existence, its capital is at Jianye ( present-day Nanjing, Jiangsu), but at times it was also at Wuchang (present-day Ezhou, Hubei).