Ju (Chinese: 莒; pinyin: Jǔ) was an Dongyi state in modern Shandong province during the Zhou dynasty (1046–256 BCE) of ancient China. The rulers of Ju had the surname of Ji 己. According to the Shuowen Jiezi, "Ju" means taro or a wooden tool. It was weakened by wars with the states of Chu and Qi. Eventually the state was annexed by Qi, and the City of Ju became a major stronghold of Qi.
- "Research into the toponymy of Ju County (莒县地名文化调查材料)" (in Chinese). Retrieved November 23, 2010.
- Gu Derong (顾德融); Zhu Shunlong (朱顺龙) (2003). 春秋史 [History of the Spring and Autumn Period]. Shanghai People's Publishing House. p. 29. ISBN 978-7-208-04544-6.
- 莒国文明注青史 激荡演义六百年
- "Three questions regarding the origin of the State of Ju (有关莒国史三个问题的考辨)" (in Chinese). Retrieved November 23, 2010.