Bo Yang (柏楊, born 1920) is a Mainlander-born writer based in Taiwan.

Born Guo Libang (郭立邦) in Kaifeng, Henan Province, he later changed his name to Guo Yidong (衣洞), apparently as a result of a falling out with his father and stepmother. He moved to Taiwan in 1949. He started using the penname Bo Yang in 1960 to write critical essays. He was imprisoned as a political prisoner on Green Island for nine years because of his criticism of Chiang Kai-shek and in particular a translation of a comic strip of Popeye. In the strip, Popeye is in a boat at sea, holding Swee'Pea. Pointing toward an island in the distance, he says: "I will be king of that island and you will be my darling prince." Chiang was displeased because he saw this as a parody of his installing his son Chiang Ching-kuo as heir apparent.

One of his best known books is The Ugly Chinaman (醜陋的中國人). During his imprisonment, Bo Yang wrote a number of works on Chinese history.

He lives in Taipei and currently carries the honorary title of national policy advisor to the administration of President Chen Shui-bian, but appears to lack actual influence.

Some accounts say his birthplace is Hui County (輝縣), now part of Xinxiang, Henan.

（The Ugly Chinaman ）