QSA

QSA may refer to:

• Qt Script for Applications, a scripting engine
• Quaker Social Action
• Qualified Security Assessor, a certification by the Payment Card Industry (PCI) Security Standards Council
• Quantification Settlement Agreement, a water distribution plan
• Queens of the Stone Age, a band
• Queen's Scout Award
• Queen's South Africa Medal for service in the Boer War
• Queensland State Archives
• Queer-straight alliance

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