Changgeng (長庚), meaning "the excellent west one", is a historical Chinese name for the planet Venus.
Changgeng may also refer to:
People Changgeng, Qing's last Viceroy of Shaan-Gan Cheng Changgeng (1811–1880), a Qing dynasty opera artist Li Changgeng (李长庚), a contestant in Idol Producer
Places Changgeng Subdistrict (长庚街道), Wuling, Changde, Hunan Province, China Changgeng Village (长庚村), Taiping Township, Wudalianchi, Heihe, Heilongjiang, China Linkou Chang Gung Memorial Hospital, a hospital in Guishan District, Taoyuan City, Taiwan