HSA

HSA may refer to:

• Hellenic Space Agency, Greece
• Haiku Society of America
• Harvard Student Agencies
• Hawker Siddeley Aviation
• Hayel Saeed Anam Group, a Yemeni conglomerate
• Health Sciences Authority, Singapore
• Health and Safety Authority, Ireland
• Hmar Students' Association, in Imphal, Manipur, India
• HSA Bank, US
• Hunt Saboteurs Association, UK
• Hospital Saving Association, UK, now Simplyhealth

• The Harlem School of the Arts

• Heat stable antigen, a protein
• Human serum albumin

• East African Safari Air, by ICAO code
• Harry Stern Airport, in Richland County, North Dakota, US
• Stennis International Airport, in Bay St. Louis, Mississippi, US, FAA airport code
• High Speed Amphibian, an amphibious vehicle created by Alan Gibbs

• Health savings account, US
• Health Spending Account, Canada
• Healthcare Spending Account, Canada
• Heterogeneous System Architecture, in computing
  • HSA Foundation
• Homeland Security Act, US
• Sultanah Aminah Hospital, Johor, Malaysia
• Host State Act (Switzerland)