As a three letter acronym, TLA can be:

• TLA, a three letter acronym for "three-letter acronym" or "three-letter abbreviation" (see also Self-referential humor)
• TLA, "Three-Letter Agency" (used to refer to law enforcement or intelligence agencies which are often three words in length, FBI, CIA, NSA, etc.)
• Theater of the Living Arts, a concert hall in Philadelphia, Pennsylvania, USA
• TLA Video, a Philadelphia-based company that focuses on selling, renting and distributing independent, gay/lesbian, and arthouse films, as well as some Hollywood movies
• Territorial local authority, in New Zealand
• Travel Lodging Allowance in U.S. armed forces terminology
• Tektronix TLA series of logic analyzers
• Tom Lord's Arch, a component of the GNU arch revision control system

TLA can refer to several different organizations:

• Theater Libraries Association
• Texas Lawyers Auxiliary
• Thai Libraries Association in Thailand
• Texas Library Association in Texas, USA
• Tennessee Library Association in Tennessee, USA
• Technology Leadership Academy in Missouri, USA
• Texas Locksmiths Association
• Tasmanian Logging Association

TLA may also refer to several technical terms:

• Telemetry link adapter
• Telephone line adapter
• Thin layer activation
• Temporal Logic of Actions
• Top Level Aggregator in the IPv6 protocol

TLA | TLA