ATL

ATL may refer to:

Places

 * Atlanta, the capital and most populous city of the U.S. state of Georgia
 * Hartsfield–Jackson Atlanta International Airport (IATA airport code)
 * Peachtree station (Amtrak station code)
 * Attleborough railway station, in Norfolk, England (National Rail code)

Media

 * ATL (film), a 2006 film set in the city of Atlanta, Georgia, United States
 * Across the Line (radio show), a BBC Northern Ireland music brand
 * ATL (band), an R&B boy band
 * Above the Law (group), a Los Angeles–based rap group
 * All Time Low, a pop punk band from Lutherville-Timonium, Maryland
 * Among the Living, an album by heavy metal band Anthrax

Technology

 * Advanced Tactical Laser, a US military program to mount a laser weapon on an aircraft for use against ground targets
 * Americans for Technology Leadership, an organization that advocates limited government regulation of technology
 * Active Template Library, from Microsoft
 * ATLAS Transformation Language, a QVT model transformation language for model-driven engineering
 * A retired US Navy hull classification symbol: Atlantic tank landing ship (ATL)

Other

 * Adult T-cell leukemia, a rare cancer of the immune system's own T-cells
 * Alternating-time Temporal Logic, a branching-time temporal logic that naturally describes computations of multi-agent system and multiplayer games
 * ATL (Amperex Technology Limited), a Chinese battery manufacturing company
 * The Appropriate Technology Library, a library on 29 subject areas of small scale, do-it-yourself technology
 * Anti-Terrorism Law, a law that aims to prevent, prohibit, and penalize terrorism in the Philippines
 * Association of Teachers and Lecturers, an education union in the UK
 * Atlanta, Georgia's major professional sports teams:
 * Atlanta Braves, the city's Major League Baseball team
 * Atlanta Falcons, the city's National Football League team
 * Atlanta Hawks, the city's National Basketball Association team
 * Atlanta United FC, a Major League Soccer team
 * Avion Très Léger or Robin ATL, a light aircraft manufactured by Avions Pierre Robin
 * The ATL proposed rebrand of Metropolitan Atlanta Rapid Transit Authority (MARTA)
 * Azienda Trasporti Livornese, former Livorno bus transport company