OTA

OTA is a three-letter acronym which may stand for:

Electronics

Operational transconductance amplifier, a kind of operational amplifier
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

Office of Technology Assessment, a United States Congress agency disbanded in 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
Ordo Templi Astartes, a neo-pagan Canaanite magickal order

Occupational Therapy Assistant
Ochratoxin A, a mycotoxin
Off the Air, an Adult Swim television series
Online Travel Agency, online (e.g. Web) presence for a Travel Agency
Optical Tube Assembly, the tube of a telescope as referred by astronomers
Organized Team Activities, off-season training sessions during Training Camp (National Football League)
Otakon, Baltimore's anime convention