Yang Chih-yuan (born 21 January 1990) is a Taiwanese political activist. He is one of the founders of the now defunct .
Yang was born in Taichung.
Yang registered an account on the website of the National Socialism Association in 2006, when he was in middle school.
In 2008, Yang joined the Democratic Progressive Party (DPP) and took part in Wild Strawberries Movement. He quit the DPP in 2009.
In 2014, Yang and his friend Wu Bai-wei formed the "Tridemist Youth League" (), during which he met and discussed cooperation with Chang An-lo, president of the Chinese Unification Promotion Party, which appeal to Chinese unification. This Youth League shares the same name with Kuomintang's historical youth wing (1938âÂÂ1947).
In 2020, a 25-year-old woman accused Yang of sexual harassment.
On 3 August 2022, the Chinese ministry of state security detained Yang in Wenzhou, Zhejiang, on suspicion of endangering national security. He was formally arrested on 24 April 2023, and handed a nine-year prison term on 6 September 2024.
Yang was listed as a political prisoner in the U.S. Congressional-Executive Commission on China annual report of 2025.