ATA stands for:

• the Advanced Technology Attachment computer disk drive interface standard
• ATA Airlines (formerly America Trans Air)
• the Air Transport Association
• the US Navy hull classification symbol for Auxiliary Ocean Tug
• the American Topical Association
• an Analog Telephony Adapter, a device for connecting analog telephones to a Voice over IP system
• the Allegheny Trail Alliance (http://atatrail.org) 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.
• the American Taekwondo Association
• the Alberta Teacher's Association, the teacher's union for the province of Alberta, Canada

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