Cheng Tsao-Ju (Chinese: 鄭藻如; pinyin: Zhèng Zǎorú; 1827–1894), courtesy name Zhixiang (Chinese: 志翔), was the second Chinese Ambassador to the United States during the Qing dynasty.

In 1851, he passed the provincial examination and was subsequently assigned to work in the Shanghai Machinery Bureau.

During the Guangxu period, he was transferred to the Tianjin Customs Road in Zhili.

[1] In 1881, he was appointed as the imperial envoy to the United States, Spain and Peru.

In the tenth year of Guangxu's reign (1884), he served as deputy envoy of the General Affairs Department, and the following year he was promoted to minister of Guanglu Temple.