Zhang Jian (Chinese: 張儉; pinyin: Zhāng Jiǎn; died 651), courtesy name Shiyue (師約), was a relative of the Tang dynasty emperors who became a duke.
He was a great-nephew of Emperor Gaozu of Tang, the founder of the dynasty.
He did good service in aiding the Emperor to consolidate his power; and on one occasion rode alone into the camp of a revolted tribe of Turko-Scythians, and succeeded in gaining their submission.
He held many important posts, and was ennobled as Duke.
This article incorporates text from entry Chang Ch'ien in A Chinese Biographical Dictionary by Herbert A. Giles (1898), a publication now in the public domain.