Xihe Commandery (Chinese: 西河郡) was a historical commandery of China, located in modern northern Shanxi and part of Inner Mongolia. The name "Xihe" referred to a southward section in the middle reaches of the Yellow River. During the Sui and Tang dynasties, Xihe Commandery became an alternative name for Fen Prefecture (汾州). In 741 AD, it administered 5 counties, namely Xihe (formerly Xicheng), Xiaoyi (formerly Yong'an), Jiexiu, Pingyao and Lingshi. The total population was 320,230, or 59,450 households.