Tianyuan may refer to:Tianyuan (Go) (天元), centre of a Go board or a Go competition in China Tianyuan District (天元区), Zhuzhou, Hunan Tianyuan, Cixi (天元镇), town in Cixi City, Zhejiang Tianyuan Cave (田园洞), cave near Beijing where the Tianyuan man was found Tianyuan man (田园洞人), one of the earliest modern humans to inhabit eastern Asia Tian yuan shu (天元術), a Chinese system of algebra for polynomial equations created in the 13th century