Or or OR may refer to:

Arts and entertainment

Film and television

* "O.R.", a 1974 episode of ''List of M*A*S*H episodes (Season 3), M*A*S*H'' * ''Or (My Treasure)'', a 2004 movie from Israel (''Or'' means "light" in Hebrew)

Music

* Or (album), ''Or'' (album), a 2002 album by Golden Boy (award), Golden Boy with Miss Kittin * ''*O*R'', the original title of Olivia Rodrigo's album ''Sour (album), Sour'', 2021 * "Or", a song by Israeli singer Chen Aharoni in Kdam Eurovision 2011 * Or Records, a record label * Organized Rhyme, a Canadian hip-hop group featuring Tom Green

Businesses and organizations

* Or (political party) (), Israel * OR Books, an American publisher * Owasco River Railway, Auburn, New York, U.S. (by reporting mark) * TUI fly Netherlands, formerly ''Arke'', a Dutch charter airline (by IATA designator)

Language and linguistics

* Or (digraph), in the Uzbek alphabet * Or (letter) (or ''forfeda''), in Ogham, the Celtic tree alphabet * Odia language, a language spoken in East India (ISO 639) * Or, an English grammatical conjunction * -or, an English agent noun suffix * Or, a digraph in Taiwanese's Daī-ghî tōng-iōng pīng-im phonetic transcription

Places

Europe

* Or (Crimea), an isthmus of the Black Sea * Or (river), a tributary of the Ural * Province of Oristano, Italy (by vehicle code)

United States

* Oregon state postal abbreviation * Orange Line (Washington Metro)

India

* Odisha formerly Orissa, a state of India

Science, technology, and mathematics

Computing and mathematics

* Or (logic), logical disjunction * Exclusive or (XOR), a logical operation * Bitwise OR, an operator in computer programming, typically notated as or or , * The short-circuit operator ''or'', notated or, , , , or or else * Elvis operator, an operator in computer programming that returns its first operand if its value is considered true, and its right operand if not * Null coalescing operator, an operator in computer programming * Onion routing, anonymous networking technique (also Onion Router) * OR gate, an integrated circuit in electronics * Object–relational mapping

Other uses in science and technology

* Odds ratio, a measure of effect size in statistics * ''OR'', a previous title of the ''Journal of the Operational Research Society'' * Operating room, in medicine * Operations research, or operational research, in British English * Operations readiness and assurance, Operations readiness

Titles and ranks

* Official receiver, a statutory office holder in England and Wales * Order of Roraima of Guyana, an award of the Republic of Guyana * Other ranks, personnel who are not commissioned officers, usually including non-commissioned officers (NCOs), in militaries of many Commonwealth countries

Other uses

* Or (name), a list of people with the Hebrew given name and surname * Official Records of the American Civil War * Olympic record, a term for the best performances in Olympic Games * Or (heraldry), ''Or'' (heraldry), a gold or yellow tincture (from the French word for "gold") * Own recognizance, the basis for releasing someone awaiting trial without bail