OTA or ota may stand for:

• Off the Air, an Adult Swim television series
• Otakon, an annual anime convention in Baltimore, Maryland

• Ochratoxin A (also termed OTA), a mycotoxin
• Operational transconductance amplifier, a kind of operational amplifier
• Optical tube assembly, the tubular optical train of a telescope as referred by astronomers
• Over-the-air, another word for wireless communication
  • Over-the-air programming, a method of reprogramming smart phones and other mobile devices
  • OTA bitmap, a data format developed by Nokia for sending images via SMS
  • Over-the-air television (or terrestrial television), the traditional method of television broadcast signal delivery
  • Over-the-air performance testing, evaluation of the performance of a radio including the impact of its radiation pattern and its interaction with device circuitry.

• Ontario Temperance Act, 1916 Canadian law prohibiting the manufacture, transportation and sale of alcohol and alcoholic beverages

• 'ota', the ISO 639 code for the Ottoman Turkish language

• Officers Training Academy, an Indian military academy in Chennai
• Office of Technology Assessment, a United States Congress agency that operated from 1972 to 1995
• Oklahoma Turnpike Authority, organization that operates turnpikes within the state of Oklahoma
• OpenTravel Alliance and the OpenTravel XML data format for the travel industry
• Orascom Telecom Algeria, another name for Djezzy GSM (a branch of Orascom group)
• Organic Trade Association, a North American association that focuses on the organic business community
• Orthodontic Technicians Association, the professional body that represents orthodontic technicians based in the United Kingdom.
• Oxford Text Archive, an archive of electronic texts and other literary and language resources at the University of Oxford
• OTA Broadcasting LLC, unit of Michael Dell's investment company MSD Capital purchasing small television stations potentially for resale of licenses via FCC auction.
• Online travel agency, a travel website that specializes in offering online planning sources and booking capabilities

• Occupational therapy assistant

• Organized Team Activities, used to describe preseason training sessions during National Football League training camp

• Ohta (disambiguation)
• Ota (disambiguation)
• Over-the-air (disambiguation)

This disambiguation page lists articles associated with the title OTA.
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