TSA explained

TSA most frequently refers to:

• Technology Student Association, organization of technology students.
• Tourette Syndrome Association, advocacy organization
• Transportation Security Administration, in the United States Department of Homeland Security

TSA may also refer to:

• Tattnall Square Academy, a private school located in Macon, Georgia
• Taipei Songshan Airport's IATA code
• Tax Sheltered Annuity, an investment vehicle. For example, a 403(b) may be a TSA.
• Temporal Security Agency, a fictional organization from The Journeyman Project
• Tenant Services Authority, a United Kingdom regulatory body
• Texas Soaring Association, a glider club near Dallas, Texas
• Thai Student Association, a group of organizations for expatriate Thai students
  • Various Taiwanese, Turkish, Thai, and Tamil Student Associations utilize this abbreviation
• The Scout Association in the UK
• Theosophical Society in America
• Timestamp when issued by a trusted third party (TTP) acting as a timestamping authority (TSA)
• Trans States Airlines, a US regional airline
• Transformation Story Archive, a type of online fiction archive
• Trichostatin A, an inhibitor of histone deacetylases
• Trypticase soy agar, a common laboratory plating media
• TSA (band), a Polish heavy metal/hard rock band
• Tulane School of Architecture in New Orleans, Louisiana
• Transmission Service Area, often used by organisations such as Ofcom in the UK, as denoting the allotted geographic reach of a radio station.