Or or OR may refer to:

Arts and entertainment

Film and television

* "O.R.", a 1974 episode of ''

M*A*S*H ''M*A*S*H'' (an acronym for Mobile Army Surgical Hospital) is an American media franchise consisting of a series of novels, a film, several television series, plays, and other properties, and based on the semi-autobiographical fiction of Richa ...

'' * '' Or (My Treasure)'', a 2004 movie from Israel (''Or'' means "light" in Hebrew)

Music

* ''Or'' (album), a 2002 album by Golden Boy with Miss Kittin * ''*O*R'', the original title of Olivia Rodrigo's album ''

Sour The gustatory system or sense of taste is the sensory system that is partially responsible for the perception of taste. Taste is the perception stimulated when a substance in the mouth biochemistry, reacts chemically with taste receptor cells l ...

'', 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 OR Books is a New York City-based independent publishing house founded by John Oakes and Colin Robinson in 2009. The company sells digital and Print on demand, print-on-demand books directly to the customer and focuses on creative promotion throug ...

, 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) This is a list of digraphs used in various Latin alphabets. In the list, letters with diacritics are arranged in alphabetical order according to their base, e.g. is alphabetised with , not at the end of the alphabet, as it would be in Danish, ...

, in the Uzbek alphabet * Or (letter) (or ''forfeda''), in Ogham, the Celtic tree alphabet *

Odia language Odia (;"Odia"
''Lexico''. , ISO 15919, ISO: , ; formerly rendere ...

, a language spoken in East India (ISO 639) * Or, an English

grammatical conjunction In grammar, a conjunction (List of glossing abbreviations, abbreviated or ) is a part of speech that connects Word, words, phrases, or Clause, clauses'','' which are called its conjuncts. That description is vague enough to overlap with those of ...

* -or, an English

agent noun In linguistics, an agent noun (in Latin, ) is a word that is derived from another word denoting an action, and that identifies an entity that does that action. For example, ''driver'' is an agent noun formed from the verb ''drive''. Usually, '' ...

suffix * Or, a digraph in Taiwanese's

Daī-ghî tōng-iōng pīng-im Daī-ghî tōng-iōng pīng-im ( abbr: DT; ) is an orthography in the Latin alphabet for Taiwanese Hokkien based upon Tongyong Pinyin. It is able to use the Latin alphabet to indicate the proper variation of pitch with nine diacritic symbols.We ...

phonetic transcription

Places

Europe

* Or (Crimea), an isthmus of the Black Sea *

Or (river) The Or (, ) is a river in Orenburg Oblast of Russia and Aktobe Province of Kazakhstan. It is a left tributary of the Ural, and is 332 km long, with a drainage basin of 18 600 km2. The river is formed by the confluence of the rivers ...

, a tributary of the Ural *

Province of Oristano The province of Oristano (; ) is a Provinces of Italy, province in the autonomous island region of Sardinia, Italy. Its capital is the city of Oristano. There are 87 ''comuni'' (: ''comune'') in the province. It has an area of , a total populati ...

, Italy (by vehicle code)

United States

Oregon Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...

state postal abbreviation *

Orange Line (Washington Metro) The Orange Line is one of the six rapid transit lines of the Washington Metro system, consisting of 26 metro station, stations in Fairfax County, Virginia, Fairfax County and Arlington County, Virginia, Arlington in Northern Virginia; Washingt ...

India

Odisha Odisha (), formerly Orissa (List of renamed places in India, the official name until 2011), is a States and union territories of India, state located in East India, Eastern India. It is the List of states and union territories of India by ar ...

formerly Orissa, a state of India

Science, technology, and mathematics

Computing and mathematics

Or (logic) In logic, disjunction (also known as logical disjunction, logical or, logical addition, or inclusive disjunction) is a logical connective typically notated as \lor and read aloud as "or". For instance, the English language sentence "it is ...

, logical disjunction *

Exclusive or Exclusive or, exclusive disjunction, exclusive alternation, logical non-equivalence, or logical inequality is a logical operator whose negation is the logical biconditional. With two inputs, XOR is true if and only if the inputs differ (on ...

(XOR), a logical operation *

Bitwise OR In computer programming, a bitwise operation operates on a bit string, a bit array or a binary numeral (considered as a bit string) at the level of its individual bits. It is a fast and simple action, basic to the higher-level arithmetic opera ...

, an operator in computer programming, typically notated as or or , * The

short-circuit operator Short-circuit evaluation, minimal evaluation, or McCarthy evaluation (after John McCarthy) is the semantics of some Boolean operators in some programming languages in which the second argument is executed or evaluated only if the first argumen ...

''or'', notated or, , , , or or else *

Elvis operator In certain computer programming languages, the Elvis operator, often written ?:, is a binary operator that evaluates its first operand and returns it if its value is ''logically true'' (according to a language-dependent convention, in other word ...

, 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 The null coalescing operator is a binary operator that is part of the syntax for a basic conditional expression in several programming languages, such as (in alphabetical order): C# since version 2.0, Dart since version 1.12.0, PHP since versi ...

, an operator in computer programming *

Onion routing Onion routing is a technique for anonymous communication over a computer network. In an onion network, messages are encapsulated in layers of encryption, analogous to the layers of an onion. The encrypted data is transmitted through a series o ...

, anonymous networking technique (also Onion Router) *

OR gate The OR gate is a digital logic gate that implements logical disjunction. The OR gate outputs "true" if any of its inputs is "true"; otherwise it outputs "false". The input and output states are normally represented by different voltage levels. ...

, an integrated circuit in electronics *

Object–relational mapping Object–relational mapping (ORM, O/RM, and O/R mapping tool) in computer science is a programming technique for converting data between a relational database and the memory (usually the heap) of an object-oriented programming language. This ...

Other uses in science and technology

Odds ratio An odds ratio (OR) is a statistic that quantifies the strength of the association between two events, A and B. The odds ratio is defined as the ratio of the odds of event A taking place in the presence of B, and the odds of A in the absence of B ...

, a measure of effect size in statistics * ''OR'', a previous title of the ''

Journal of the Operational Research Society The ''Journal of the Operational Research Society'' is a monthly peer-reviewed academic journal covering operations research. It is an official journal of the Operational Research Society and publishes full length case-oriented papers, full length ...

'' *

Operating room Operation or Operations may refer to: Arts, entertainment and media * ''Operation'' (game), a battery-operated board game that challenges dexterity * Operation (music), a term used in musical set theory * ''Operations'' (magazine), Multi-Man ...

, in medicine *

Operations research Operations research () (U.S. Air Force Specialty Code: Operations Analysis), often shortened to the initialism OR, is a branch of applied mathematics that deals with the development and application of analytical methods to improve management and ...

, or operational research, in British English * 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 A commonwealth is a traditional English term for a political community founded for the common good. The noun "commonwealth", meaning "public welfare, general good or advantage", dates from the 15th century. Originally a phrase (the common-wealth ...

countries

Other uses

* Or (name), a list of people with the Hebrew given name and surname *

Official Records of the American Civil War The ''Official Records of the Union and Confederate Armies in the War of the Rebellion'', commonly known as the ''Official Records of the Union and Confederate Armies'' or Official Records (OR or ORs), is the most extensive collection of Americ ...

Olympic record Olympic records are the best performances in a specific event in that event's history in either the Summer Olympic Games or the Winter Olympic Games. Summer Olympics * Archery at the Summer Olympics, Archery (List of Olympic records in archery, li ...

, a term for the best performances in Olympic Games * ''Or'' (heraldry), a gold or yellow tincture (from the French word for "gold") * Own

recognizance In some common law nations, a recognizance is a conditional pledge of money undertaken by a person before a court which, if the person defaults, the person or their sureties will forfeit that sum. It is an obligation of record, entered into before ...

, the basis for releasing someone awaiting trial without bail