OTA

OTA or ota may stand for:

Art, entertainment, and media

Ochratoxin A (also termed OTA), a mycotoxin
Operational transconductance amplifier, a kind of operational amplifier
Optical Tube Assembly, the tube 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

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

New South Wales Operating Theatre Association, an Australian non-profit perioperative nursing professional association
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 representing orthodontic technicians 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.

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