Chang Jian (Chinese: 張儉, Chinese style name Shiyue 師約) (died 651) 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. Canonised as Mi (密).
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.