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Opa or OPA may refer to:

Arts and media

Fictional characters and entities

• Olivia Pope & Associates, a fictional crisis management firm in Scandal
• Outer Planets Alliance, a fictional organization in James S.A. Corey's Leviathan Wakes books and the TV series The Expanse based upon them
• Opa-Opa, a character in the Fantasy Zone video game series

Film

• Opa!, a film starring Matthew Modine, Kosta Zorbas and Agni Scott

Music

• Opa (Swedish band), a pop/folk band formed in 2012
• Opa (Uruguayan band), a 1969-1977 US-based jazz fusion group
• "Opa" (song), by Giorgos Alkaios, representing Greece at Eurovision 2010
• "Opa Opa", a 1992 song by Notis Sfakianakis; covered by Antique (1999) and Despina Vandi (2004)
• Opa Opa (album), or Mera Me Ti Mera, by Antique, 1999

Laws and international agreements

• Obscene Publications Act 1959, an Act of Parliament in the United Kingdom
• Oil Pollution Act of 1990, a United States law
• Ouagadougou Peace Agreement, that put an end to the Ivorian Civil War
• Outward Processing Arrangement, a trade agreement between Hong Kong and mainland China

Organizations

Government agencies

• Office of the Pardon Attorney, an agency of the United States Department of Justice
• Office of Population Affairs, a United States agency providing advice on population issues
• Office of Price Administration, a United States government office set up to stabilize prices and coordinate rationing after the outbreak of World War II
• Oil and Pipelines Agency, a United Kingdom agency
• Ontario Power Authority, a government agency in Canada

Other organizations

• FC OPA, an association football club from Oulu, Finland
• Postnominal letters used by the Anglican Order of Preachers (Ordo Praedicatorum Anglicanus)
• Online Privacy Alliance, a coalition of Internet companies
• OPA Co., Ltd. (Oriental Park Avenue), a Japanese clothing retail chain and subsidiary of Daiei
• Ordre des Palmes Academiques, an Order of Chivalry of France for academics and cultural and educational figures
• Oregon Pioneer Association, a fraternal-lineage society first established as the Oregon Pioneer Society in 1867
• Oregon Potters Association, a not-for-profit group of clay artists

People

• Opa Muchinguri, a Zimbabwean politician
• Opa Nguette, a French footballer
• Opa, nickname of Dorus Rijkers, Dutch lifeboat captain who rescued over 500 people in his career

Science and technology

Chemistry

• OPA mixture, a mixture used in chemical weapons
• Ortho-phthalaldehyde, a dialdehyde used in the synthesis of heterocyclic compounds and a reagent in the analysis of amino acids

Physics

• Open Public Alert, a public alert of a gravitational wave event
• Optical parametric amplifier, a laser light source that emits light of variable wavelengths

Computing

• Opa (programming language), a web development platform
• Intel Omni-Path architecture, a design for high performance computing
• Open Platform Architecture, a software interface from Ericsson Mobile Platforms for use internally in cellular phones
• Open Policy Agent, an open source policy engine cloud infrastructure from the Cloud Native Computing Foundation
• Oracle Policy Automation, an enterprise applications suite

Medicine

• Oligo Pool Assay, a SNP genotyping platform from Illumina
• Oropharyngeal airway, a device used to keep the upper respiratory airway open
• Out-patient appointments
• Ovine pulmonary adenocarcinoma, a disease of the lungs in sheep and goats, also known as Jaagsiekte

Other uses

• Ambae Island, Vanuatu (also known as Opa)
• Opa (expression), an interjection used in various cultures
• Opa (roller coaster), a closed roller coaster in Wisconsin
• Toyota Opa, a car
• Opa Station, a North Korean railway station
• OPA grade tea
• Maricopa people, a Native American tribe

See also

• Hopa (disambiguation)

• Disambiguation pages