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 U.S. Office of Palestinian Affairs, a United States government office in Jerusalem managing Palestinian relations 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 Omega Phi Alpha, a service sorority
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 Optical phased array
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)