Or may refer to:

• grammatical conjunction
• Exclusive or, a logical operation (e.g. "A or B, but not both")
• Inclusive or (Logical disjunction), a logical operation (e.g. "A or B or both")

OR, O.R. or or may also refer to:

Computing and technology[edit]

• Bitwise OR, an operator in computer programming
• Onion routing, anonymous networking technique (also Onion Router)
• OR gate, an integrated circuit in electronics

Music[edit]

• "Or", a song by Israeli singer Chen Aharoni in Kdam Eurovision 2011
• Or (album), a 2002 album by Golden Boy with Miss Kittin
• Or Records, a record label
• Organized Rhyme, a Canadian hip-hop group featuring Tom Green

Film and television[edit]

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

Education[edit]

• Old Roedenian, a former pupil of Roedean School in England
• Old Roedenian, a former pupil of Roedean School (South Africa)
• Old Rugbeian, a former pupil of Rugby School
• Old Ruymian, a former pupil of Chatham House Grammar School and latterly The Chatham and Clarendon Grammar School

Places[edit]

• Or (Crimea)
• Oregon, a state in the United States, whose postal abbreviation is "OR"

Linguistics[edit]

• Or, a digraph in the Taiwanese phonetic transcription system daighi tongiong pingim
• Odia language's ISO 639 alpha-2 code

Titles and military ranks[edit]

• Official Receiver, a statutory office holder in England and Wales
• Other ranks (Denmark), military personnel in all branches of the Danish military that are not officers by the NATO system of ranks and insignia
• Other ranks (UK), those personnel who are not commissioned officers, usually including non-commissioned officers (NCOs), in the British Army, Royal Marines, Royal Air Force and in the armies and air forces of many other Commonwealth countries

Other uses[edit]

• Arkefly, Arke (formerly Arkefly), a Dutch charter airline headquartered in Schiphol-Rijk, Netherlands, IATA airline designator
• OR, a previous title of the Journal of the Operational Research Society
• Odds ratio, a measure of effect size in statistics
• Official Records of the American Civil War
• Olympic record, a term for the best performances in Olympic Games
• Operating room
• Operations research, or operational research in British English
• Or (heraldry), a gold or yellow tincture (from the French word for "gold")
• Or (political party)
• O.R. or OR, post-nominal letters of the Order of Roraima of Guyana, an award of the Republic of Guyana
• Owasco River Railway's reporting marks
• Own Recognizance, the basis for releasing someone awaiting trial without bail
• Province of Oristano's vehicle code
• '0r' (zero r) may mean "no roods", in old measurements of land area
• Operations readiness
• Or Sasson (born 1990), Israeli judoka

See also[edit]

• And (disambiguation)
• OAR (disambiguation)
• Ore (disambiguation)