TLA is an abbreviation for:

  • Temporal logic of actions, a form of propositional logic
  • Three -letter abbreviation, see Three -letter abbreviation
  • Tyrolean Provincial Archives, the historic Central Archive in Innsbruck
  • Tom Lord 's Arch, a version control software, see GNU arch
  • Air defense of the GDR, see air defense ( NVA)
  • Disambiguation
  • Abbreviation