The following terms starting with the letter "O" have specific pages dedicated to them. You can come back to this page or the main Computer Terms page by using the navigation breadcrumbs at the bottom of each page.

• OC = Optical Carrier
• OCR = Optical Character Recognition
• OCX = OLE Custom Control
• ODBC = Open Database Connectivity
• ODI = Open Data-link Interface
• OEM = Original Equipment Manufacturer
• OIM = Open Information Model
• OLAP = Online Analytical Processing
• OLE = Object Linking and Embedding
• OLED = Organic Light-Emitting Diode
• OLTP = On-Line Transaction Processing
• OMG = Object Management Group
• OOP = Object-Oriented Programming
• OpenSRS = Open Shared Registration System
• OPSEC Alliance = Open Platform for Secure Enterprise Connectivity Alliance
• OSF = Open Software Foundation
• OSI = Open System Interconnection
• OSPF = Open Shortest Path First
• OSR = OEM System Release
• OTOH = On The Other Hand