ATA stands for:

• Ancient Technology Activation gene: an Ancient technology from the series Stargate Atlantis and Stargate SG-1
• ATA is the ISO 3166-1 3-letter "country" code for Antarctica.
• The US Navy hull classification symbol for Auxiliary Ocean Tug.
• Artists Television Access: Since the early 80's a non-profit screening venue in San Francisco.
• The IATA code for the Comandante FAP Germán Arias Graziani Airport in Huaraz, Ancash, Peru.
• In Turkish means father or baba.
• Automatic Tracking Aid: see Radar.

Technology

• Advanced Technology Attachment: computer disk drive interface standard
• Air To Air: form of Intercooler
• Allen Telescope Array: an antenna array dedicated to SETI
• Analog Telephony Adapter: a device for connecting analog telephones to a Voice over IP system

Organizations

• Archery Trade Associaton The industry trade group for the Archery and Bowhunting Industry
• Adams-Toman Aircraft Company, an aircraft manufacturer in Aberdeen, Washington during the 1920s
• Air Trans Africa: A Rhodesian airline
• Air Transport Association of America
• Air Transport Auxiliary of Royal Air Force
• Atlantic Treaty Association
• Alberta Teachers' Association: the public teacher's union for the province of Alberta, Canada
• Allegheny Trail Alliance: a group of seven rails to trails organizations building the Great Allegheny Passage, a 152 mile bicycle and walking trail connecting Cumberland, MD with Pittsburgh, PA.
• American Telemedicine Association
• American Topical Association
• American Translators Association
• ATA Airlines: formerly American Trans Air
• American Taekwondo Association: the ATA is the largest Taekwondo franchise in the United States

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