Taghachar, also spelled Tajir, Ta'achar (died c. 1296) was a commander in the army of the Mongol Empire. He was one of the conspirators involved in the overthrow of three Ilkhanate khans, and placed the short-lived Baidu on the throne in 1295. Taghachar was a member of the Suquai'ud branch of the Baarin clan. When Hulegu entered Persia in 1256, he commanded a battalion of his western wing.