| Acronym | Definition |
|---|
| ATL➣Atlanta, GA, USA - Hartsfield International (Airport Code) |
| ATL➣Active Template Library |
| ATL➣Atlantic |
| ATL➣Authority to Leave (shipping industry) |
| ATL➣Atlanta Thrashers (NHL hockey) |
| ATL➣Association of Teachers and Lecturers (UK) |
| ATL➣All Time Low (band) |
| ATL➣Authority to Load (commercial trade) |
| ATL➣Above the Law (gaming clan; rap group; blog) |
| ATL➣Hartsfield International Airport (Atlanta, Georgia) |
| ATL➣Adobe Type Library (computing) |
| ATL➣Adult T-cell Leukemia |
| ATL➣Attitudes toward Learning (education) |
| ATL➣Above The Line (advertising) |
| ATL➣Advanced Transmission Line (loudspeakers) |
| ATL➣Anterior Temporal Lobectomy |
| ATL➣Advanced Technology Labs (Sprint) |
| ATL➣Actors Theatre of Louisville (Kentucky) |
| ATL➣Activex Template Library |
| ATL➣Atm Layer |
| ATL➣Aerodynamic Testing Laboratory |
| ATL➣Adobe Type Library |
| ATL➣Advanced Tactical Laser |
| ATL➣Ann Taylor Loft |
| ATL➣Antenna Transmission Line |
| ATL➣Attempt to Locate (police) |
| ATL➣Air Traffic Liability (accounting) |
| ATL➣Automated Tape Library |
| ATL➣Approach To Learning (educational term) |
| ATL➣Americans for Technology Leadership |
| ATL➣Algar Telecom Leste (cellular operator, Brazil) |
| ATL➣A Tu Lado (Spanish TV program) |
| ATL➣Assistive Technology Library (Minnesota) |
| ATL➣Assistant Team Leader |
| ATL➣ATLAS Transformation Language |
| ATL➣Advanced Technology Libraries (publication) |
| ATL➣Application Template Library |
| ATL➣Association Tutélaire de Lozère (French: Guardianship Association of Lozère; Lozère, France) |
| ATL➣Alternate Timeline |
| ATL➣Almost Too Late |
| ATL➣Abgasturbolader (German: turbocharger) |
| ATL➣Academic Technology Lab (various schools) |
| ATL➣Actual Total Loss |
| ATL➣Amazon Therapeutic Laboratories |
| ATL➣Automatic Tape Library |
| ATL➣Academy for Teaching and Learning |
| ATL➣Audit Team Leader |
| ATL➣Approved Textbook List (Singapore) |
| ATL➣Adaptive Threshold Learning |
| ATL➣Assistive Technology Lab |
| ATL➣Artificial Transmission Line |
| ATL➣Aviation Traders Limited |
| ATL➣Aqua Tourisme Loisirs (French tourism company) |
| ATL➣Accelerated Trade Liberalization (World Trade Organization) |
| ATL➣Adaptive Technologies Limited (Brighton & Hove, East Sussex, UK) |
| ATL➣Aerosol Technology Laboratory (Autonomous Research Laboratory at Texas A&M University; College Station, Texas) |
| ATL➣A Thousand Lights (UK band) |
| ATL➣Archer Technicoat Ltd (High Wycombe, UK) |
| ATL➣Acquisitions, Logistics, and Technology |
| ATL➣Acronimo de Tres Letras (Spanish: Three Letter Acronym) |
| ATL➣Aircraft Technical Library |
| ATL➣ActiveX Library Template (Microsoft) |
| ATL➣Adjustable Travel Limiter |
| ATL➣Accenture Technology Lab |
| ATL➣Automated Tax Law |
| ATL➣Accumulated Time of Leave (Australia) |
| ATL➣Arkkitehtitoimistojen Liitto RY (Finnish: Association of Finnish Architects' Offices RY) |
| ATL➣Automated Test Library |
| ATL➣ADSL Transmission Line |
| ATL➣Accredited Teacher Leadership (New South Wales Institute of Teachers; New South Wales, Australia) |
| ATL➣Account Technical Lead |
| ATL➣ATWCS Training Laboratory |
| ATL➣Angle Technology Ltd (UK) |