TLA may refer to:
Organisations:
- Textile Labour Association, an Indian trade union, precursor of SEWA
- Tour de las Américas, a professional golf tour in Latin America
- Truppenluftabwehr, the German name of the Air Defence of the National People’s Army (Nationale Volksarmee), the former East German army
Computer Science
- Temporal Logic of Actions, a logic used to describe behaviours of concurrent systems
- Tom Lord's Arch, a revision control system now known as "GNU arch"
In entertainment:
- The TLA, or Theater of the Living Arts, a music venue in Philadelphia, Pennsylvania
- TLA Entertainment Group, a movie retailer and distributor
- TLA Releasing, a film distribution division
- The Lawrence Arms, punk band.
- TLA Entertainment Group, a movie retailer and distributor
- Avatar: The Last Airbender, a 2005-2008 cartoon series.
- The Last Airbender, a 2010 film based on the cartoon series Avatar: The Last Airbender
Other uses:
- Three-letter acronym, a common abbreviation for a short common phrase
- Tepehuán, (ISO 639-3 code), the South-West Tepehuán language of North-Western Mexico
- Teacher Learning Academy, a multi-stage training and mentoring program
- Teller Airport (IATA code), in Alaska, United States
- MX-TLA, the ISO 3166-2:MX code for the Mexican state of Tlaxcala
- Tom Lord's Arch, a component of the GNU arch revision control system
- Territorial Local Authority (New Zealand), see Territorial authorities of New Zealand
- Identifier of the Talla VOR