SA

SA or sa may stand for:

• arsine, a toxic gas
• samarium, until the 1920s, when the symbol Sm became universal
• Salvation Army
• San Antonio
• Saudi Arabia (ISO country code)
• seaman apprentice
• selective availability, the mechanism for deliberately degrading the precision of the civilian GPS network
• sine anno, used in bibliographies to indicate that a publication date is unknown
• social anxiety (also known as "social phobia" or "social anxiety disorder")
• Socialist Alliance
• Sociedad Anónima (Spanish), see S.A. (corporation)
• Société Anonyme (French), see S.A. (corporation)
• South Africa
• South America
• South Australia
• structured analysis (software engineering)
• Sturmabteilung (SA, Storm Troopers as in Nazi Germany)
• surface-to-air missile
• system administrator (computer industry)