OTA or ota may stand for:

Art, entertainment, and media

* '' Off the Air'', an Adult Swim television series *

Otakon Otakon ( ) is an annual three-day anime convention held during July/August. It stands for Otaku Convention. From 1999 to 2016, it took place at the Baltimore Convention Center in Baltimore, Maryland's Inner Harbor district; in 2017, it moved to ...

, an annual anime convention in Baltimore, Maryland

Electronics, science, and technology

* Ochratoxin A (also termed OTA), a mycotoxin *

Operational transconductance amplifier The operational transconductance amplifier (OTA) is an amplifier whose differential input voltage produces an output current. Thus, it is a voltage controlled current source (VCCS). There is usually an additional input for a current to control t ...

, a kind of operational amplifier * Optical tube assembly, the tubular

optical train An optical train, also called an optical assembly, is an arrangement of optical components (e.g. lenses, mirrors, Prism (optics), prisms) to guide a sightline, line of sight and/or a laser beam. For example, the position and angle of lenses may b ...

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 OTA Bitmap was a specification designed by Nokia for black and white images for mobile phones. Introduction The OTA or ''Over The Air'' Bitmap was defined by Nokia Corporation as part of their Smart Messaging Specification, to send pictures as a ...

, 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.

Law and government

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

Language

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

Organizations

New South Wales Operating Theatre Association The New South Wales Operating Theatre Association Incorporated otherwise known as the Operating Theatre Association Inc. (NSWOTA, NSW OTA or OTA) is an Australian State/Territory-based non-profit perioperative nursing professional association t ...

, an Australian non-profit perioperative nursing professional association *

Officers Training Academy The Officers Training Academy (OTA) is a training establishment of the Indian Army that trains officers for the Short Service Commission (SSC). The 49-week course at the OTA prepares graduates for all branches of the Army, except for the Army Me ...

, 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

Professions

Occupational therapy Occupational therapy (OT) is a global healthcare profession. It involves the use of assessment and intervention to develop, recover, or maintain the meaningful activities, or ''occupations'', of individuals, groups, or communities. The field of ...

assistant

Sports

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