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 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 7611 TLAs in the database.
Of these, 4520 are distinct, out of 17576 possible (25.72%).
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 | |
| OAM | Open Application Model | |
| Order Of Australia | ||
| OAP | Old Age Pensioner | |
| Over-Anxious Parent | ||
| Overig Academisch Personeel | ||
| OAS | OpenAPI Specification | |
| Oracle Application Server | ||
| OAT | Outside Air Temperature | |
| OBA | Object-Based Audio | |
| Octave Band Analyzer | ||
| OBB | Oriented Bounding Box | |
| OBC | Obscured By Clouds | |
| OBE | Officer of the British Empire | |
| Old Bottle Effect | ||
| Oracle By Example | ||
| Order of the British Empire | ||
| OBI | Ontologische Basis Intuïtie | |
| OBJ | Offences Brought to Justice | |
| OBP | Object Based Programming | |
| Octamer Binding Protein | ||
| Officiële Belgische Postzegelcatalogus | ||
| On Base Percentage | ||
| Onafhankelijke Burger Partij | ||
| Ondersteunend en beheerspersoneel | ||
| Online Brand Protection | ||
| Open Bridging Protocol | ||
| OpenBoot PROM | ||
| Optimized Business Process | ||
| Orange Blossom Pilsner | ||
| Oregon Board Of Pharmacy | ||
| OBR | Office for Budget Responsibility | |
| OBS | Open Broadcaster Software | |
| Openbare BasisSchool | ||
| OCA | Offensive Counter Air | |
| Office of Compliance Analytics | ||
| OCC | Old-timer Caravan Club | |
| Optimistic Concurrency Control | ||
| Organic Cardamom Cookies | ||
| OCD | Obsessive Compulsive Disorder | |
| OCF | Object craft file | |
| OCG | Organised Crime Group | |
| OCI | Optical Compute Interconnect | |
| 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 | |
| OCZ | OverClockerZ | |
| ODD | Optical Disc Drive | |
| ODE | Offline Diagnostics Environment | |
| Open Distance Education | ||
| Open Dynamics Engine | ||
| ODF | Open Dutch Fiber | |
| ODI | One-Day International | |
| ODN | Optical Distribution Network | |
| ODP | Onderste Dode Punt | |
| ODS | Other Digital Stuff | |
| OED | Operation Early Dawn | |
| Oxford English Dictionary | ||
| OEE | Overall Equipment Effectiveness | |
| 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 | ||
| OFC | old-fashioned C-string | |
| OFF | Oriental Fruit Fly | |
| OFK | Official Flight Kit | |
| OFM | Only For Men | |
| Open Fiets Map | ||
| OFT | Office of Fair Trading | |
| OGD | Organization and Guidance Department | |
| OGL | Onbetwiste Groene Leidster | |
| OGM | O George Michael | |
| OGS | Old Ground Surface | |
| Orbit Ground School | ||
| 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 | |
| OIH | Organisationally Induced Helplessness | |
| OII | Oxford Internet Institute | |
| OIL | Operational Intervention Levels | |
| OIO | Onderzoeker In Opleiding | |
| OIS | Oxygen Isotope Stage | |
| 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 | |
| OLP | Opleidingsplanner | |
| Orbital Launch Pad | ||
| OLS | OffLine Scheduler | |
| Ordinary Least Square | ||
| 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 | ||
| Operation Market Garden | ||
| orthomanuele geneeskunde | ||
| outlaw motorcycle gang | ||
| OMI | Onderwijs Media Instituut | |
| OMS | Order Management System | |
| OMT | Outbreak Management Team | |
| OMW | Officieel Mooi Weer | |
| On My Way | ||
| OMZ | Oh My Zsh | |
| ONK | Ongelooflijk Niet Kut | |
| ONL | ongehoord nederland | |
| ONN | Onion News Network | |
| ONR | Office for Nuclear Regulation | |
| Office of Naval Research | ||
| ONS | Office for National Statistics | |
| One Night Stand | ||
| ONS Nederlands Softwarebedrijf | ||
| ONT | Optical Network Terminal | |
| OOC | Out Of Character | |
| OOD | Obsessive Oliebollen Disorder | |
| OOK | Omituisten Otusten Kerho | |
| On-Off Keying | ||
| Out Of Kilter | ||
| OOO | Out of Office | |
| OOP | Object-Oriented Programming | |
| OPC | Obsolete Procedure Call | |
| Optimal Power Calibration | ||
| Ordinary Portland Cement | ||
| OPD | Outraging Public Decency | |
| OPL | FM Operator Type-L | |
| Organiser Programming Language | ||
| OPR | Office of Primary Responsibility | |
| OPT | Optimised Production Technology | |
| Optimized Production Technology | ||
| OQL | Object Query Language | |
| ORB | Object Request Broker | |
| Operational Relay Box | ||
| ORM | Object Relational Mapping | |
| Object Role Modelling | ||
| ORP | Occupational Radiation Protection | |
| ORS | Oral Rehydration Salts | |
| ORV | Overlijdensrisicoverzekering | |
| OSA | Official Secrets Act | |
| OSB | Oriented Strand Board | |
| OSC | Operational Support Centre | |
| Oxford Synthesizer Company | ||
| OSD | On Screen Display | |
| OSF | Onafhankelijke Senaatsfractie | |
| Open Society Foundations | ||
| Open Software Foundation | ||
| Open Source Foundation | ||
| OSG | Open Services Gateway | |
| Openbare ScholenGemeenschap | ||
| OSI | Open Society Institute | |
| OSL | Open Source Lab | |
| Optically Stimulated Luminescence | ||
| OSM | Ons Soort Mensen | |
| Open Street Map | ||
| Original State Management | ||
| OSO | Onvoldoende Studeerbare Opleiding | |
| OST | Original Sound Track | |
| Outer Space Treaty | ||
| OSV | Onset of significant void | |
| Operating Supply Voltage | ||
| OSZ | Onderwijs- en Studentenzaken | |
| OTA | Over The Air | |
| OTB | Open To Buy | |
| OTC | Order To Cash | |
| OTF | OpenType Font | |
| OTG | On-The-Go | |
| OTK | Overeen Te Komen | |
| OTL | Ongelovelijke Tering Leier | |
| Operator Type Library | ||
| Overland Telegraph Line | ||
| OTN | Official TLA Now | |
| OTP | One True Pairing | |
| One-Time Pad | ||
| OTR | Off The Road | |
| OTT | Old Tongham Tasty | |
| Onvoltooid Toekomende Tijd | ||
| Orange Treasonous Traitor | ||
| Over The Top | ||
| OTW | Off The Wall | |
| OUD | Office of Undergraduate Development | |
| Office of Urban Development | ||
| OUG | Occam User Group | |
| OUI | Organic User Interface | |
| OUP | Oxford University Press | |
| 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 | ||
| OVH | On Vous Héberge | |
| Online Virtual Hosting | ||
| 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 | ||
| OWS | Olympische Winterspelen | |
| OZB | Onroerende Zaken Belasting | |
| Overdekte Zwem- en Badinrichting | ||
