OCA or Oca may refer to:

Places and jurisdictions

* The ancient town and bishopric Oca in Asia Minor (present Asia Turkey), now a Latin Catholic titular see * The former Spanish Oca, modern Villafranca Montes de Oca, also see of a medieval bishopric (Auca), now a Latin Catholic titular see *

Oca (river) , name_etymology = , image = Río Oca.JPG , image_size = 250px , image_caption = Watershed of the Oca at Villalbos (Valle de Oca) , map = Valle del Ebro.jpg , map_size = 350 , map_capt ...

, a tributary of the Ebro, Spain, having its source in the comarca of Montes de Oca *

Côte d'Azur Observatory The Côte d'Azur Observatory (french: Observatoire de la Côte d'Azur, OCA) is a network of astronomical observatories throughout southern France. It originated in 1988 with the merger of two observatories: # Nice Observatory # Centre de rech ...

, French name: Observatoire de la Côte d'Azur * Cerro Armazones Observatory * Orange County Airport, several airports in the United States *

Oregon Coast Aquarium __NOTOC__ The Oregon Coast Aquarium is an aquarium in Newport in the U.S. state of Oregon. Opened in 1992, the facility sits on along Yaquina Bay near the Pacific Ocean. The aquarium was home to Keiko, the orca who starred in the movie ''Fr ...

* Iruña de Oca, Spanish municipality

Business and society

Odisha Cricket Association Odisha Cricket Association (abbreviated OCA) is the governing body of the Cricket activities in the Odisha state of India and the Odisha cricket team. It was formed in the year of 1961 and its headquarters is in Cuttack Barabati Stadium Complex. ...

, state cricket body of BCCI *

Open Content Alliance The Open Content Alliance (OCA) was a consortium of organizations contributing to a permanent, publicly accessible archive of digitized texts. Its creation was announced in October 2005 by Yahoo!, the Internet Archive, the University of California ...

, consortium of organizations contributing to a publicly accessible archive of digitized texts *

Optimum currency area In economics, an optimum currency area (OCA) or optimal currency region (OCR) is a geographical region in which it would maximize economic efficiency to have the entire region share a single currency. The underlying theory describes the optimal cha ...

, geographical region which efficiently shares a single currency *

Oregon Citizens Alliance The Oregon Citizens Alliance (OCA) was a conservative Christian political activist organization, founded by Lon Mabon in the U.S. state of Oregon. It was founded in 1986 as a vehicle to challenge then–U.S. Senator Bob Packwood in the Republican p ...

, conservative Christian political activist organization *

Organic Consumers Association The Organic Consumers Association (OCA) is a non-profit advocacy group for the organic agriculture industry based in Minnesota. The organization's members include subscribers to their online newsletters, volunteers, supporters, and retail outlets ...

, consumer protection and organic agriculture advocacy group * Organization of Chinese Americans, national Asian Pacific American social and civic organization * Oxford Conservative Association, student political organisation at the University of Oxford

Education

Oakland Charter Academy Oakland Charter Academy (OCA) originally Jingletown Charter School, is a charter school in Oakland, California serving middle school students. Opened in 1994, it is the first and oldest charter school in Oakland and one of the first in California.< ...

, a member school of Amethod Public Schools *

Ontario College of Art Ontario College of Art & Design University, commonly known as OCAD University or OCAD, is a public art university located in Toronto, Ontario, Canada. The university's main campus is spread throughout several buildings and facilities within d ...

, former name for OCAD University * Open College of the Arts

Government

* Court of Appeal for Ontario, frequently referred to as the Ontario Court of Appeal *

Office of Consumer Affairs (Canada) The Office of Consumer Affairs (OCA; french: Bureau de la consommation) is a Government of Canada government agency, agency under Innovation, Science and Economic Development Canada, which is responsible for consumer protection and Promotion (market ...

, government agency of Industry Canada *

Olympic Council of Asia The Olympic Council of Asia (OCA) is a governing body of sports in Asia, currently with 45 member National Olympic Committees. The current Acting President is Raja Randhir Singh, substituting Sheikh Ahmad Al Fahad Al Sabah. The headquarters ...

, governing body of sports in Asia *

Organised and Financial Crime Agency of New Zealand The Organised and Financial Crime Agency of New Zealand (OFCANZ), generally referred to as the ''Organised Crime Agency,'' is an agency hosted within the New Zealand Police. The agency's stated objective is to "disrupt and combat organised crime ...

, formerly known as the Organised Crime Agency *

Organized Crime Agency of British Columbia The Organized Crime Agency of British Columbia (OCABC) is a Designated Policing and Law Enforcement Unit under the Police Act (B.C.) established on March 11, 1999. Similar to the structure and authority of municipal police departments in British ...

(1999–2004), predecessor of the Combined Forces Special Enforcement Unit *

Outback Communities Authority The Outback Communities Authority (OCA) is a statutory authority in South Australia (SA) created under the ''Outback Communities (Administration and Management) Act 2009''. It has been established to "manage the provision of public services and ...

, an authority providing municipal services to communities in Outback South Australia

Medicine

OCA1 Oculocutaneous albinism type I or type 1A is an autosomal recessive skin disease. This subtype of oculocutaneous albinism is caused when the gene for tyrosinase (symbol TYR or OCA1) does not function properly. The location of OCA1 may be written ...

, a gene associated with oculocutaneous albinism *

Oculocutaneous albinism Oculocutaneous albinism is a form of albinism involving the eyes ('' oculo-''), the skin (''-cutaneous''), and the hair. Overall, an estimated 1 in 20,000 people worldwide are born with oculocutaneous albinism. OCA is caused by mutations in seve ...

, a form of albinism involving the eyes and skin

Religion

Orthodox Church in America The Orthodox Church in America (OCA) is an Eastern Orthodox Christian church based in North America. The OCA is partly recognized as autocephalous and consists of more than 700 parishes, missions, communities, monasteries and institutions ...

, autocephalous Eastern Orthodox Church in North America *

Oxford Capacity Analysis The Oxford Capacity Analysis (OCA), also known as the American Personality Analysis, is a list of questions which is advertised as being a personality test and that is administered for free by the Church of Scientology. The OCA test is offered ...

, also known as the American Personality Analysis, a personality test used in Scientology * Oca (bishopric), a now titular Catholic see in Asia Minor

Technology

Odoo Community Association Odoo is a suite of business management software tools including, for example, CRM, e-commerce, billing, accounting, manufacturing, warehouse, project management, and inventory management. During Odoo experience which took place in Belgium i ...

, an organization supporting the

Odoo Odoo is a suite of business management software tools including, for example, CRM, e-commerce, billing, accounting, manufacturing, warehouse, project management, and inventory management. During Odoo experience which took place in Belgium i ...

(formerly OpenERP) community *

Open Control Architecture The Open Control Architecture (OCA) is a communications protocol architecture for control, monitoring, and connection management of networked audio and video devices. Such networks are referred to as "media networks". The official specification of ...

, network control protocol for audio and video devices (AES70) * Optically Clear Adhesives, bonding agents used for light-emitting devices like OLED and LEC; see Liquid optically clear adhesive * Oracle Certified Associate, a level of the Oracle Certification Program

Other uses

* Oca (structure), a kind of Brazilian indigenous dwelling * ''

Oxalis tuberosa ''Oxalis tuberosa'' is a perennial herbaceous plant that overwinters as underground stem tubers. These tubers are known as uqa in Quechua, oca in Spanish, yam in New Zealand and a number of other alternative names. The plant was brought into cult ...

'', a South American tuber known as oca in Spanish *

Offensive counter air Offensive counter-air (OCA) is a military term for the suppression of an enemy's military air power, primarily through ground attacks targeting enemy air bases: disabling or destroying parked aircraft, runways, fuel facilities, hangars, air traffi ...

, military term * Old

Croton Aqueduct The Croton Aqueduct or Old Croton Aqueduct was a large and complex water distribution system constructed for New York City between 1837 and 1842. The great aqueducts, which were among the first in the United States, carried water by gravity fro ...

, especially when referring to the hiking trail *

Open coloring axiom The open coloring axiom (abbreviated OCA) is an axiom about coloring edges of a graph whose vertices are a subset of the real numbers: two different versions were introduced by and by . Statement Suppose that ''X'' is a subset of the reals, and ...

in mathematics * Operation Crossroads Africa, a volunteer organization * Optical clearing agent, substance used in microscopy to make samples transparent * Orange County Astronomers, an amateur astronomy club based in Orange County, California