code) OJT – On-the-Job Training OK OK (s) Oklahoma (postal symbol) (i) oll korrect (facetious alteration of "all correct", 1839) OKC – (a) Oklahoma City OL OLED – (a) Organic Light-Emitting Diode OLS – (i) Operational Linescan System OM om – (s) Oromo language (ISO 639-1 code) OM – (s) Oman (ISO 3166 digram) – Olympique de Marseille (French football club) OMA – (i) Open Mobile Alliance – Operations & Maintenance, Army OMB – (i) U.S. Office of Management and Budget – Ontario Municipal Board – (i) Order of Mapungubwe in Bronze OMD – (i) Orchestral Manoeuvres in the Dark (1980s pop group) OME – (i) Osaka Mercantile Exchange OMFG – (i) Oh My F**king God OMG – (i) Oh My God or Or My Gosh OMGW – (i) "Oh My Gosh it's Windy" OMN – (s) Oman (ISO 3166 trigram) OMNCS – (i) U.S. Office of the Manager for the National Communications System OMP – (i) Order of Mapungubwe in Platinum OMR – (s) Omani rial (ISO 4217 currency code) OMS – (i) Order of Mapungubwe in Silver OMT – (i) Object Model Template OMW – (i) On My Way, Oh My Word ON ON – (s) Ontario (postal symbol) Onna – Oniong, Nnung Ndem, and Awa, a Local Government Area in Nigeria ONC – (i) Orthopaedic Nurse Certified ONCE – (a) Organización Nacional de Ciegos Españoles (Spanish, "National Organization for the Spanish Blind") ONÉRA – (a) Office national d'études et de recherches aérospatiales (French, "Aeronautics and Space Research Center") ONG – (i) Orthodontic National Group ONH – (i) Óglaigh na hÉireann (Irish idiom for "soldiers of Ireland"), used for the following: Historically, as the Irish-language name for the original Irish Republican Army ("Old IRA") In modern times, as the Irish-language name of the Defence Forces of Ireland The name of two groups claiming descent from the Old IRA, one a currently inactive splinter group of the Continuity IRA and the other an active splinter group of the Real IRA ONI – (i) (U.S.) Office of Naval Intelligence ONS – (i) Operational Needs Statement OO OO – (i) Object Oriented – Over & Out OOO – (i) Out Of the Office OOAD – (i) Object-Oriented Analysis and Design OOBE – (a) Out-of-body experience OOCL – (i) Orient Overseas Container Line OODA – (i) Observation, Orientation, Decision, Action loop (a.k.a. Boyd's Loop) OOMF – (i) One Of My Followers OOP