Taiyi, Tai-yi, or Tai yi may refer to:
Religion and philosophy Donghuang Taiyi, a Chinese name and concept of God Taiyi Shengshui (太一生水), Taoist creation myth written about 300 BC Taiyi Taoism, school of Taoism during the Jin dynasty Taiyi Zhenren, Daoist deity and folklore character Tàiyī Yuánjūn or Doumu, goddess in Chinese religion and Taoism Taiyi jinhua zongzhi, Chinese for The Secret of the Golden Flower, Taoist classic on neidan meditation
People and places
Tai Yi, ancient Chinese name for Mount Taibai in Shaanxi Province Tai-yi, courtesy name for Tang of Shang, first king of the Shang dynasty Tai-yi Lin (1926–2003), Chinese-American writer and translator Taiyi Mountains or Zhongnan Mountains, branch of the Qin Mountains in Shaanxi Province Tai Yi Shan, one historic name for Lantau Island, in Hong Kong Tái yī xiàn, Chinese for Provincial Highway 1 (Taiwan), a major north-south highway
Other
Taiyi, the International Astronomical Union approved name for the star 8 Draconis Taiyi, name for ST-23, an acupuncture point Tai Yi Shen Shu, a Chinese metaphysical predictive art