HCA
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HCA may refer to:
Organizations
Europe
- Hall–Carpenter Archives, an archive of materials related to gay activism in Britain
- Heidelberg Center for American Studies, an institute at Heidelberg University, Germany
- Helsinki Citizens’ Assembly, a nongovernmental organization dedicated to peace, democracy and human rights in Europe
- Heritage Crafts Association, a UK charity that helps to preserve traditional hand crafts
- Homes and Communities Agency, a UK non-departmental public body
United States
- Heritage Christian Academy (disambiguation), several private Christian schools:
- Hopkins Consulting Agency, a student-run technology consulting company at The Johns Hopkins University
- Hospital Corporation of America, an operator of health care facilities
Other organizations
- Haryana Chess Association, the official body for chess in Haryana, India
- High Court of Australia, the supreme court in the Australian court hierarchy and the final court of appeal in Australia
- Hillcrest Christian Academy, an independent primary school in South Africa
- Holy Child Academy, a Catholic school in Pagadian City, Philippines
Science and technology
- Heterocyclic amine, a type of chemical compound containing at least one heterocyclic ring
- Hexachloroacetone, an organic compound also called hexachloropropanone or perchloroacetone
- Hierarchical cluster analysis, a method of cluster analysis used in data mining
- High content analysis, a laboratory microscopic technique
- Host Channel Adapter, in electronic communications
- Hydroxycitric acid
- Holloway Cut Advisor, a method of rating brilliant cut diamonds
- Hot Cranking Amps, a measurement of the current provided by a car battery
Other uses
- HC Andersen (band), Finnish rock band
- Healthcare Assistant, a UK name for a job class of medical paraprofessionals
- Hennepin Center for the Arts, a building in Minneapolis, Minnesota, US
- Historical cost accounting