Zheng Tian (traditional Chinese: 鄭畋; simplified Chinese: 郑畋; pinyin: Zhèng Tián, 821?/825?–883?), courtesy name Taiwen (臺文), formally Duke Wenzhao of Xingyang (滎陽文昭公), was a chancellor of late Tang Dynasty, serving two terms as chancellor during the reign of Emperor Xizong. He was heavily involved in the Tang campaign against the agrarian rebel Huang Chao and Huang Chao's state of Qi.