Dao (Chinese: 道; pinyin: Dào) was a Chinese vassal state during the Zhou Dynasty (1046 – 221 BCE) located in the southern part of Runan County, Henan. Dao existed in the shadow of the powerful neighbouring State of Chu which was held in check by the equally powerful State of Qi. Whilst Duke Huan of Qi remained alive as one of the Five Hegemons, Qi maintained friendly relations with Dao along with the other small states of Jiang (江国), Huang and Bai (柏国) amongst others.