HSA may refer to:

Aviation[link]

• East African Safari Air ICAO code
• Stennis International Airport in Bay St. Louis, Mississippi (FFA airport code)

Education[link]

• The Harlem School of the Arts
• Success Academy Charter Schools, formerly Harlem Success Academy, including formerly HSA, HSA 1, HSA 2, etc.
• Harmony Science Academy school system in Texas and Louisiana
• Horizon Science Academy, a Columbus, OH, school
• Maryland High School Assessments, a public school standardized test

Engineering[link]

• Hill Start Assist and Hill Start Aid, an automotive mechanism
• Heterogenous System Architecture, formerly known as the Fusion architecture, an open specification by AMD for heterogenous computing

Healthcare[link]

• Health Savings Account, a US health benefit account
• Health Spending Account, a Canadian health benefit account
• Health Sciences Authority, a statutory board of the Ministry of Health of Singapore

Law[link]

• Homeland Security Act, an American law
• Human Security Act, a Philippine law
• Humane Slaughter Act, an American law

Organizations[link]

• Haiku Society of America
• Harvard Student Agencies, world's largest student-run corporation
• Hawker Siddeley Aviation
• Hispanic Student Association, a type of student organization
• Hmar Students Association
• Hoffman Sports Association, an organizing body for Freestyle BMX events worldwide
• Hunt Saboteurs Association, an animal rights organization
• High Speed Alliance, a Dutch high-speed rail company

Other[link]

• Book of Hosea, abbreviated Hsa, a book in the Hebrew Bible
• Heat stable antigen CD24, a cluster of differentiation
• Human serum albumin, a type of protein in human blood plasma

See also[link]

• HSAS (disambiguation)

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