張勃係西漢宣帝、元帝時大臣。佢係武帝時名臣張湯之後，宣帝時大司馬張安世個孫，富平侯張延壽個仔。
Zhang Bo was the minister of Emperor Xuan and Emperor Yuan of the Western Han Dynasty. He was the grandson of Zhang Anshi, the great Sima Zhang Anshi of Emperor Xuan, and the son of Zhang Yanshou, Marquis of Fuping.