Philosophic principle
* Yi (philosophy) (义; 義, righteousness, justice) among the Three Fundamental Bonds and Five Constant VirtuesEthnic groups
* Dongyi, the Eastern Yi, or Tung-yi (Chinese: , ''Yí''), ancient peoples who lived east of the Zhongguo in ancient China * Yi people (Chinese: , ''Yí''; Vietnamese: ''Lô Lô''), an ethnic group in modern China, Vietnam, and ThailandLanguage
* Yi (Cyrillic), the letter of the Ukrainian alphabet written "Ї" and "ї" * Yi language or the Nuosu language spoken by the Yi people of China *Mythology and religion
* Yi the Archer or Houyi, a heroic archer and hunter in Chinese mythology * Yi (husbandman), also known as Boyi or Bo Yi, a heroic user of fire and government minister in Chinese mythologyPeople
Surname
* Yi (surname 易) * Yi (surname 伊) * Yi (Korean surname), including ** House of Yi, household of Joseon and the Korean Empire ** Yi Sun-sin (1545–1598), Korean admiralGiven name
* Lu Yi (disambiguation), several persons * Wu Yi (politician) (born 1938), Vice Premier of ChinaPlaces
* Yi County (disambiguation), two counties in China * Yí River, a river in Uruguay * Yi River (Henan), a river in China *Other uses
* ''Yi'' (dinosaur) * Yi (drinkware) (), former name for the ''zun'', a traditional bronze drinkware of ancient China * Yi (prefix symbol), the prefix symbol of the binary unit prefix ''yobi'', representing 280, the equivalent of the decimal prefix ''yotta-'' (Y) * ''Yi'' ( zh, t=億 , s=亿, link=no), an East Asian counting unit meaning 100,000,000 * Yi (vessel) (), a different kind of bronze vessel used in traditional rituals in ancient China * YI Technology, a Chinese company that manufactures cameras and computer vision technologies * ''See also
* Yii * Yi Prefecture (disambiguation) {{disambiguation, geo Language and nationality disambiguation pages