ATT

ATT may refer to:

• AT&T, an American telecommunications company
• Amadou Toumani Touré, President of Mali
• American Telephone & Telegraph, a former telecommunications company
• American Tobacco Trail
• American Top Team, a mixed martial arts team based in Florida
• Arms Trade Treaty, A UN treaty to control the illicit trade of weapons
• Association of Taxation Technicians, a United Kingdom professional association
• ATI Tray Tools - freeware program developed by Ray Adams for ATI Radeon video cards
• Atmautluak Airport (IATA: ATT), an airport in Alaska
• The National Rail code for Attadale railway station, United Kingdom
• Attorney at law
• In biology, the name of a set of bacterial and bacteria-infecting virus (bacteriophage) genes involved in prophage integration.
• Attitude (disambiguation)
• Authorization to Transport, a permit issued in Canada to transport Restricted and Prohibited firearms
• Authorization to Test, in medical school