Chaotian may refer to:

Chaotian District, in Guangyuan, Sichuan, China Chaotian Palace, in Nanjing, Jiangsu, China Chaotian Temple, in Beigang, Yunlin County, Taiwan Chaotian (geology), an unofficial proposed subdivision of the Hadean eon Chaotian jiao, the Mandarin Chinese name for the Facing heaven pepper