TSA

TSA may refer to:

Organizations

• Transportation Security Administration, of U.S. Department of Homeland Security
• Technology Student Association
• Tenant Services Authority, British regulatory body
• Thai Student Association, of expatriate Thai student groups
• Theosophical Society in America
• The Scout Association, British National Scouting Organisation
• Tourette Syndrome Association
• Trans States Airlines, United States, logo

Education

• Tattnall Square Academy, Macon, Georgia, United States
• Thinking Skills Assessment, generic university admissions test
• Tiong Se Academy, Chinese school, the Philippines
• The Sharon Academy, Vermont, United States
• Territory-wide System Assessment, a Hong Kong academic assessment program
• Tulane School of Architecture, New Orleans, Louisiana, United States

Entertainment

• TSA (band), a Polish heavy metal/hard rock band ("Tajne Stowarzyszenie Abstynentów" or "Teetotallers' Secret Association")

Places

• Taipei Songshan Airport IATA code
• Titanium Security Arena, an Australian privately-owned multipurpose indoor sports stadium located in Findon, Adelaide, South Australia

Science and technology

• Timestamping authority, carrying out cryptographic trusted timestamping
• Trichostatin A, an inhibitor of histone deacetylases
• Trypticase soy agar, a common laboratory plating media
• Tumor-specific antigen, see Tumor antigen

Other uses

• Technicien supérieur de l'aviation, a certification in French civil aviation
• Toilet Safety Administration, parody of US Transportation Security Administration in TV episode "Reverse Cowgirl" (South Park)
• Transformation Story Archive, Web site archiving amateur fiction
• Treasury single account, a financial policy in Nigeria