Since 1998, the Casia Corporation Holland have been working on The Definitive TLA Wörterbuch to help people find their way in the ever growing intellectual chaos caused by the late-twentieth century tendency to use as many acronyms in the daily communication as possible. Especially acronyms with a length of three letters have been and continue to be immensly popular, not only in Information and Communication Technology circles, but also among people in more mundane fields of labour; a tendency that has mushroomed with the advent of mobile communication and the combined growing popularity of Short Message Services.
At present, there are 4895 (3244 distinct) TLA's in the database.
Please click on a bar in the diagram that is displayed below, or enter a search-string.
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| O | ||
| OAA | Oxaloacetic acid | |
| OAP | Old Age Pensioner | |
| OAS | Oracle Application Server | |
| OBA | Octave Band Analyzer | |
| OBB | Oriented Bounding Box | |
| OBC | Obscured By Clouds | |
| OBE | Officer of the British Empire | |
| Oracle By Example | ||
| Order of the British Empire | ||
| OBJ | Offences Brought to Justice | |
| OBS | Openbare BasisSchool | |
| OCA | Offensive Counter Air | |
| OCC | Old-timer Caravan Club | |
| Optimistic Concurrency Control | ||
| Organic Cardamom Cookies | ||
| OCD | Obsessive Compulsive Disorder | |
| OCF | Object craft file | |
| OCG | Organised Crime Group | |
| OCI | Oracle Call Interface | |
| OCL | Open Computing Language | |
| OCM | Othniel Charles Marsh | |
| OCR | Optical Character Recognition | |
| Oxford Cancer Research | ||
| OCU | Operational Command Unit | |
| OCW | Onderwijs, Cultuur en Wetenschappen | |
| ODD | Optical Disc Drive | |
| ODE | Open Distance Education | |
| Open Dynamics Engine | ||
| ODI | One-Day International | |
| ODP | Onderste Dode Punt | |
| ODS | Other Digital Stuff | |
| OED | Oxford English Dictionary | |
| OEI | Office of Environmental Information | |
| OEM | Original Equipment Manufacturer | |
| OER | Onderwijs en Examen Regeling | |
| OEV | Omnia Est Vagina | |
| Onder Eervolle Vermelding | ||
| Oranje Evenementen Vereniging | ||
| Orde Eendracht Vreugde | ||
| OFF | Oriental Fruit Fly | |
| OFT | Office of Fair Trading | |
| OGL | Onbetwiste Groene Leidster | |
| OGM | O George Michael | |
| OGV | Onder Gebruikelijk Voorbehoud | |
| OHA | Occupational Health Assistant | |
| OHL | Oberste Heeresleitung | |
| OHM | Ongelooflijke HOMO muziek | |
| OIA | Of Iets Anders | |
| Ondoordachte Impulsieve Actie | ||
| OIC | Oh I See | |
| OIE | World Organization for World Health | |
| OIG | Ouranos Informatica Groep | |
| OII | Oxford Internet Institute | |
| OIO | Onderzoeker In Opleiding | |
| OKZ | Ongelooflijke Kanker Zooi | |
| OLA | Optisch Leesbare Acceptgiro | |
| OLB | On Line Borrel | |
| OLD | One-Line Diagram | |
| Operational Logic Diagram | ||
| Optical Line Driver | ||
| Oxford Latin Dictionary | ||
| OLE | Object Linking and Embedding | |
| OLO | Ongeidentificeerd Lopend Object | |
| OLS | OffLine Scheduler | |
| OLT | Optical Line Termination | |
| OLZ | Orientaische LiteraturZeitung | |
| OMA | Office for Metropolitan Architecture | |
| OMD | Oh My Dawkins! | |
| Orchestral Manoeuvres in the Dark | ||
| OMG | Object Management Group | |
| Oh My God | ||
| orthomanuele geneeskunde | ||
| OMS | Order Management System | |
| OMW | On My Way | |
| ONK | Ongelooflijk Niet Kut | |
| ONN | Onion News Network | |
| ONR | Office of Naval Research | |
| ONS | One Night Stand | |
| OOC | Out Of Character | |
| OOK | Omituisten Otusten Kerho | |
| On-Off Keying | ||
| Out Of Kilter | ||
| OOO | Out of Office | |
| OPC | Optimal Power Calibration | |
| OPL | FM Operator Type-L | |
| Organiser Programming Language | ||
| OPR | Office of Primary Responsibility | |
| OPT | Optimised Production Technology | |
| ORB | Object Request Broker | |
| ORM | Object Relational Mapping | |
| Object Role Modelling | ||
| ORS | Oral Rehydration Salts | |
| OSA | Official Secrets Act | |
| OSC | Oxford Synthesizer Company | |
| OSD | On Screen Display | |
| OSF | Open Software Foundation | |
| Open Source Foundation | ||
| OSG | Open Services Gateway | |
| OSM | Ons Soort Mensen | |
| Original State Management | ||
| OSO | Onvoldoende Studeerbare Opleiding | |
| OTA | Over The Air | |
| OTB | Open To Buy | |
| OTC | Order To Cash | |
| OTK | Overeen Te Komen | |
| OTL | Ongelovelijke Tering Leier | |
| OTN | Official TLA Now | |
| OTP | One-Time Pad | |
| OTT | Old Tongham Tasty | |
| Onvoltooid Toekomende Tijd | ||
| Over The Top | ||
| OTW | Off The Wall | |
| OUD | Office of Undergraduate Development | |
| Office of Urban Development | ||
| OUR | Oxygen Uptake Rate | |
| OVE | L'Observatoire de la Vie Etudiante | |
| Observatorio Voto Electrónico | ||
| OmgevingsVergunning Eindhoven | ||
| Omnia Vagina Est | ||
| Ondernemersvereniging Edam | ||
| Österreichischer Verband für Elektrotechnik | ||
| OVS | Openbaar Vervoer Studentenkaart | |
| OVT | Onvoltooid Verleden Tijd | |
| OWA | Open World Assumption | |
| Oracle Web Agent | ||
| Outlook Web Access | ||
| OWL | Object Windows Library | |
| Office Workstations Limited | ||
| Older Women's League | ||
| One World Language | ||
| Online Watch Link | ||
| Online Writing Lab | ||
| Ordinary Wizarding Level | ||
| Overwhelmingly Large Telescope | ||
| OZB | Onroerende Zaken Belasting | |
