Ruan Xiaohuan (Chinese: 阮晓寰; pinyin: *Ruǎn Xiǎohuán*; born 10 June 1977) is a Chinese dissident, blogger, and information security specialist. In 2009, Ruan started an anonymous blog named ProgramThink (Chinese: 编程随想; pinyin: *Biānchéng Suíxiǎng*) on Blogger, covering various topics from network security, methods to bypass the internet blockade in mainland China, to his own political commentaries (including criticism of the Chinese Communist Party) and book recommendations.