Tyzen Hsiao (traditional Chinese: 蕭泰然; simplified Chinese: 萧泰然; pinyin: Xiāo Tàirán; Pe̍h-ōe-jī: Siau Thài-jiân) (b. 1938) is a Taiwanese composer of the neo-Romantic school. Many of his vocal works set poems written in Taiwanese, the mother tongue of the majority of the island's residents. His compositions stand as a musical manifestation of the Taiwanese literature movement that revitalized the island's literary and performing arts in the 1970s and 1980s. Hsiao's career in music includes additional success as a pianist and conductor.
The pronunciation of the composer's given name approximates the sound of the English words tie-run.