Zheng Xiaoxu (Cheng Hsiao-hsu; simplified Chinese: ???; traditional Chinese: ???; pinyin: Zhèng Xià oxu; Wade–Giles: Cheng4 Hsiao4-hsu1; Hepburn: Tei Kosho) (2 April 1860 – 28 March 1938) was a Chinese statesman, diplomat and calligrapher.
He served as the first Prime Minister of Manchukuo.