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IT Abbreviations & Acronyms: Comprehensive Glossary

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There are currently 85 acronyms in this directory beginning with the letter O.
O
OA&M
Operations, Administration, and Management
OAB
Offline Address Book
OASIS
Organization for the Advancement of Structured Information Standards
OBI
Open Buying On The Internet
OCM
Organizational Change Management
OCNCC
Oracle Communications Network Charging and Control
OCR
Optical Character Recognition
OCSP
Online Certificate Status Protocol
OCW
MIT Opencourseware
OCx
Optical Carrier Levels
ODBC
Open Database Connectivity
ODCA
Open Data Center Alliance
ODF
Open Document Format
ODI
Open Data-Link Interface
ODIN
Open Device Identification Number
ODL
Open and Distance Learning
ODM
Original Design Manufacturer
ODMA
Open Document Management Api or Application Program Interface
ODMR
On-Demand Mail Relay
ODP
Open Directory Project
ODS
Operational Data Store
ODX
Offloaded Data Transfer
OEBF
Open Electronic Book Forum
OEE
Original Equipment Effectiveness
OEM
Original Equipment Manufacturer
OF-Config
Openflow Configuration and Management Protocol
OFB
Output Feedback
OFDM
Orthogonal Frequency-Division Multiplexing
OFPP
Office Of Federal Procurement Policy
OGSA
Open Grid Services Architecture
OHA
Open Handset Alliance
OID
Object ID or Object Identification
OLA
Operational-level Agreement
OLAP
Online Analytical Processing
OLE
Object Linking and Embedding
OLED
Light-Emitting Diode
OLPC
One Laptop Per Child
OLT
Optical Line Terminal
OLTP
Online Transaction Processing
OMAP
Open Multimedia Application Platform
OMB
Office Of Management and Budget
OMG
Object Management Group
OMSS
Oracle Mobile Security Suite
ONF
Open Networking Foundation
OODBMS or ODBMS
Object-oriented Database Management System
OoOE
Out-of-order Execution
OOP
Object-oriented Programming
OOPSLA
Object-oriented Programming Systems, Languages and Applications
OOXML
Office Open Extended Markup Language
OPAC
Online Public Access Catalog
OpenGL
Open Graphics Library
OpenNMS
Open Network Management System
OpenVPN
Open Source Virtual Private Network
Opex
Operational Expenditure
OPM
Operational Performance Management
OPML
Outline Processor Markup Language
OPS
Open Profiling Standard
OPT
Optimized Production Technology
or
Operations Research
orB
Object Request Broker
orBS
Open Relay Behavior-Modification System
orM
Object-Relational Mapping
OS
Operating System
OSA
Open System Authentication
OSBI
Open Source Business Intelligence
OSCI
OS Command Injection
OSD
Object Storage Device
OSDL
Open Source Development Labs
OSF
Open Software Foundation
OSGi
Open Service Gateway Initiative
OSHA
Occupational Safety and Health Administration
OSI
Open Systems Interconnection
OSP
Online Service Provider
OSPF
Open Shortest Path First
OSS
Open Source Software
OTA
Over The Air
OTC
On-Time Delivery To Commit Date
OTCR
On-Time Delivery Performance To Customer Request Date
OTFT
organic Thin-Film Transistor
OTM
Optivity Telephony Manager
OTP
One-Time Password
OU
Organizational Unit
OVSDB
Open Vswitch Database Management Protocol
OWA
Microsoft Outlook Web App
OWASP
Open Web Application Security Project

A quick reference guide for Information Technology (IT) related acronyms and abbreviations.

As a service to IT personnel everywhere (and also for ourselves) we’ve compiled a comprehensive list of IT-related acronyms and abbreviations.

Acronyms can be pronounced as words, like NASA and UNESCO; as individual letters, like FBI, TNT, and ATM; or as both letters and words, like JPEG (pronounced JAY-peg).

Abbreviations formed from a string of initials and usually pronounced as individual letters are more specifically called initialisms or alphabetisms.

No matter how you refer to these IT-related terms, please use our quick reference guide or search TechTerms.com to help decode the world of IT abbreviations and acronyms.

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