| O&E | Observation and Examination 
| Others |
| O/E | (findings) on examination
| Others |
| O/E | Observed-to-expected ratio
| Others |
| O/E | On Examination
| Others |
| O/E | Output Electronics
| Others |
| O/E | upon examination:
| Others |
| OE | OECO, Incorporated
| Others |
| OE | Oeding Erdel
| Others |
| OE | Of Entitlement
| Others |
| OE | Office of Enforcement
| Others |
| OE | Oh Ecch
| Others |
| OE | Old Edition
| Others |
| OE | Old English
| Others |
| OE | Old Etonian
| Others |
| OE | Omissions Excepted
| Others |
| OE | Omni Evolution
| Others |
| OE | On Ear
| Others |
| OE | One Eighty
| Others |
| OE | Online Eejit
| Others |
| OE | Ontological Engineering
| Others |
| OE | Open Edition
| Others |
| OE | Open End
| Others |
| OE | Open Enrollment
| Others |
| OE | Open Entry
| Others |
| OE | Open Error
| Others |
| OE | Open Essence
| Others |
| OE | Operating Environment
| Others |
| OE | Operating Expense
| Others |
| OE | Operating Expenses
| Others |
| OE | Operation Excellence
| Others |
| OE | Operation Explorer
| Others |
| OE | Operational Element
| Others |
| OE | Operational Environment
| Others |
| OE | Operational Excellence
| Others |
| OE | Operationally Effective
| Others |
| OE | Operations Experience
| Others |
| OE | Operator Error
| Others |
| OE | Operator Experience
| Others |
| OE | Ophryocystis elektroscirrha
| Others |
| OE | Opportunity Enterprises
| Others |
| OE | Optical Error
| Others |
| OE | Or Else
| Others |
| OE | Orchestration Engine
| Others |
| OE | Ordem dos Engenheiros
| Others |
| OE | Order Entry
| Others |
| OE | Organizational Effectiveness
| Others |
| OE | Original Equipment
| Others |
| OE | Original Equiptment
| Others |
| OE | Original Experiences
| Others |
| OE | Originating Entry
| Others |
| OE | Originating Equipment
| Others |
| OE | Orthopedic Examination
| Others |
| OE | Otitis Externa
| Others |
| OE | Ottoman Empire
| Others |
| OE | Outer Envelope
| Others |
| OE | Outlet Error
| Others |
| OE | Outlook Express
| Others |
| OE | Output Enable
| Others |
| OE | Output Error
| Others |
| OE | Outragously Expensive
| Others |
| OE | Over Edge
| Others |
| OE | Over equipped
| Others |
| OE | Over Ethernet
| Others |
| OE | Over Exposed
| Others |
| OE | Over Expressed
| Others |
| OE | Overhead Electric
| Others |
| OE | Overseas Experience
| Others |
| OE | Overt Embellisher
| Others |
| OE | Ovsichtcher Egor
| Others |
| OE | Owner's Engineer
| Others |
| OE | Owner's Equity
| Others |
| OE | Owners Estimate
| Others |
| OE | Society of Engineers
| Others |
| OE | The Oe Exchange
| Others |