Zhong Acheng (simplified Chinese: 钟阿城; traditional Chinese: 鍾阿城; pinyin: Zhōng Āchéng; born 1949), often known by his pseudonym Ah Cheng, is a Chinese author and screenwriter.
In 1979, together with Ma Desheng, Wang Keping, Huang Rui, Li Shuang, Qu Leilei, Ai Weiwei, A Cheng founded the Stars Group (XingXing), an assembly of untrained, experimental artists who challenged the strict tenets of Chinese politics. As a political and artistic group, they staged exhibitions around Beijing, making way for avant-garde art in China.