Otto A. Zdansky (28 November 1894 – 26 December 1988) was an Austrian paleontologist.
He is best known for his work in China, where he, as an assistant to Johan Gunnar Andersson, discovered a fossil tooth of the Peking Man in 1921 at the Dragon Bone Hill, although he did not disclose it until 1926  when he published it in Nature after an analysis by Davidson Black.The human teeth attributed to Homo erectus, called sinanthropus pekinensis, discovered by Otto Zdansky are two premolars and a superior wisdom tooth.
He is also famous for his excavations of mammal fossils in Baode County area (Pao Te Hsien), Shanxi Province.
Jokela, T., Eronen, J. T., Kaakinen, A., Liping, L., Passey, B. H., Zhaoqun, Z., & Mingkai, F. (2005). "Translation of Otto Zdansky’s "The Localities of the Hipparion Fauna of Baode County in Northwest Shanxi"(1923)" (PDF). Palaeontologia Electronica 8 (1).