Zhang Dun (simplified: 张惇, traditional: 張惇, pinyin: Zhāng Dūn) was the brother of Zhang Bu. In 258, when Sun Xiu and Zhang Bu had Sun Lin seized and executed, Zhang Dun was enfeoffed as Marquis of Duting (都亭侯) with three hundred troops. His brother Zhang Xun was made a Colonel. Few other details are recorded in the sources.
Zhang Dun 張惇
Brother of Zhang Bu; enfeoffed as Marquis of Duting with three hundred troops after Sun Lin's fall in 258.