Yi or YI may refer to:
In Chinese philosophy, yin and yang (also yin–yang or yin yang, 陰陽 yīnyáng "dark–bright") describe how seemingly opposite or contrary forces may actually be complementary, interconnected, and interdependent in the natural world, and how they may give rise to each other as they interrelate to one another.
Yingluck Shinawatra (Thai: ยิ่งลักษณ์ ชินวัตร, rtgs: Yinglak Chinnawat, pronounced [jîŋ.lák tɕʰīn.ná.wát]; born 21 June 1967), nicknamed Pu (Thai: ปู, pronounced [pūː], meaning "crab"), is a Thai businesswoman and politician, a member of the Pheu Thai Party who became the 28th Prime Minister of Thailand following the 2011 general election.
Yitzhak Rabin (Hebrew: יצחק רבין; IPA: [jitsˈχak ʁaˈbin]; 1 March 1922 – 4 November 1995) was an Israeli politician, statesman and general.
A yield strength or yield stress is the material property defined as the stress at which a material begins to deform plastically whereas yield point is the point where nonlinear (elastic + plastic) deformation begins.
Yiddish words may be used in a primarily English language context. An English sentence that uses these words sometimes is said to be in Yinglish or Hebronics; however, the primary meaning of Yinglish is an anglicism used in Yiddish.