# OMA

OMA or Oma may refer to:

## Businesses

* Office for Metropolitan Architecture, architecture firm founded by Dutch architect Rem Koolhaas
* Oswalds Mill Audio (OMA), a lifestyle company manufacturing horn loudspeakers and high end audio equipment

## Communication

* OMA (time signal), a former Czech longwave call sign
* .oma, extension for files encrypted by OpenMG Audio for Sony's ATRAC3 format
* Open Mobile Alliance, a standards body for the mobile phone industry
* Optical modulation amplitude, an optical communication term
* Outdoor Media Association, the peak industry body representing the Out-of-Home advertising industry in Australia
* Outlook Mobile Access, a mobile phone email program using Microsoft Exchange Server

## Engineering

* Operational Modal Analysis, a form of modal analysis which aims at identifying the modal properties of a structure based on vibration data collected when the structure is under its operating conditions

## Entertainment

* OMA Awards, awards created by MTV
* Oma Ichimura (born 1977), Japanese voice actor
* Oma Irama Penasaran, an Indonesian film released in 1976
* Oma Marilyn Anona (born 1986), Nigerian multi-media personality
* One Man Army (band), a California punk rock band formed in 1996
* Only Men Aloud!, young Welsh male voice choir

## Fictional characters

* Oma Desala, a character in the television series Stargate SG-1
* Ōma Kurogane (黒鉄 王馬, Kurogane Ōma), a character in Japanese light novel series Chivalry of a Failed Knight
* Kokichi Ōma (王馬 小吉, Ōma Kokichi), a character in the video game Danganronpa V3: Killing Harmony
* Shu Ouma (桜満 集, Ōma Shū), a character and protagonist in the Japanese anime television series Guilty Crown
* Ohma Tokita (十鬼蛇 王馬, Tokita Ōma), a character and main protagonist from the Japanese manga series Kengan Ashura
* Ohma Zi-O (オーマジオウ, Ōma Jiō), alternately spelled Oma Zi-O, a character and the main antagonist of the 29th season of the Kamen Rider Series, Kamen Rider Zi-O

## Medicine

* Ontario Medical Association, a professional organization for physicians in Ontario, Canada
* Opsoclonus Myoclonus Ataxia, a neurological disorder also known as Opsoclonus myoclonus syndrome
* Otitis media acuta, an acute infection of the middle ear

## Places

* Ōma, a town in Aomori Prefecture, Japan
* Ōma Nuclear Power Plant, in Japan
* Oma, Russia, a village in Nenets Autonomous Okrug
* Oma River, Nenets Autonomous Okrug, Russia
* Oma, Wisconsin, a town in Iron County
* Oman, IOC country code OMA

## Transportation

* Eppley Airfield, northeast Omaha, Nebraska, by IATA airport code
* Grupo Aeroportuario Centro Norte, a Mexican airport operating company, by Mexican stock market ticker symbol
* Omaha (Amtrak station), station code
* ICAO designator for Oman Air, an Omani airline

## Other uses

* Cyclone Oma, impacted Vanuatu, New Caledonia and the Solomon Islands in 2019
* Object Management Architecture, a vision for the component software environment
* Office of Multicultural Affairs, an Australian Government agency from 1987 to 1996
* Oklahoma Military Academy, from 1919–1982, the former name of Rogers State University in Claremore, Oklahoma
* Olympic Moustakbel d’Arzew, an Algerian football team
* Open Mashup Alliance, an industry group for enterprise mashups
* Orlando Museum of Art, an art museum in Orlando, Florida
* Orthologous MAtrix, a database of orthologous genes across multiple species
* Orderly marketing arrangement, a quantitative trade barrier