| O.P.D. | Once Per Day 
| Others |
| OPD | O Phenylenediamine Dihydrochloride
| Others |
| OPD | Oakland Police Department
| Others |
| OPD | Oakland Police Dept
| Others |
| OPD | Obnoxious Personality Disorder
| Others |
| OPD | Observed Point Density
| Others |
| OPD | Obsessive Photoshop Disorder
| Others |
| OPD | Obsessive Potter Disorder
| Others |
| OPD | Obstructive Pulmonary Disease
| Others |
| OPD | Occupational Property Databank
| Others |
| OPD | Ocean Physics Department
| Others |
| OPD | Odessa Police Department
| Others |
| OPD | Office for Persons with Disabilities
| Others |
| OPD | Office for Proposal Development
| Others |
| OPD | Office of Planning and Development
| Others |
| OPD | Office of Procurement and Diversity
| Others |
| OPD | Office of Procurement Diversity
| Others |
| OPD | Office of Professional Development
| Others |
| OPD | Office of Proposal Development
| Others |
| OPD | Office of Public Defence
| Others |
| OPD | Office of Public Defender
| Others |
| OPD | Office of Public Defense
| Others |
| OPD | Office of the Public Defender
| Others |
| OPD | Office Products Division
| Others |
| OPD | Officer Peter Delio
| Others |
| OPD | Officer Professional Development
| Others |
| OPD | Official Procedure Descriptor
| Others |
| OPD | Officially Pronounced Dead
| Others |
| OPD | Ohio Public Defender
| Others |
| OPD | Old Patients Department
| Others |
| OPD | Omaha Police Department
| Others |
| OPD | On Premise Diagnostics
| Others |
| OPD | Oneness Peace Divinity
| Others |
| OPD | Online Position Description
| Others |
| OPD | Online Professional Development
| Others |
| OPD | Online Protection Database
| Others |
| OPD | Ontario Police Department
| Others |
| OPD | Ontario Police Dept
| Others |
| OPD | Operand
| Others |
| OPD | Operationalisierte Psychodynamische Diagnostik
| Others |
| OPD | Operationalize Product Development
| Others |
| OPD | Operationalized Psychodynamic Diagnosis
| Others |
| OPD | Operator Protection Device
| Others |
| OPD | Optical Path Difference
| Others |
| OPD | Optical Product Development
| Others |
| OPD | Optical Proximity Detector
| Others |
| OPD | Optimized Process Designs
| Others |
| OPD | Optimized Profile Descent
| Others |
| OPD | Order Processing Department
| Others |
| OPD | Orderly Payment of Debts
| Others |
| OPD | Organization Planning and Discipline
| Others |
| OPD | Organizational and Professional Development
| Others |
| OPD | Organizational Performance Dimensions
| Others |
| OPD | Organizational Process Definition
| Others |
| OPD | Original Pack Dispensing
| Others |
| OPD | Orlando Police
| Others |
| OPD | Orlando Police Department
| Others |
| OPD | Orleans Public Defenders
| Others |
| OPD | Orphan Products Development
| Others |
| OPD | Osgoode Professional Development
| Others |
| OPD | OSHPD Preapproved Details
| Others |
| OPD | Osteon Population Density
| Others |
| OPD | Other People's Drama
| Others |
| OPD | otopalatodigital
| Others |
| OPD | Ottawa Police Department
| Others |
| OPD | Out Patient Department
| Others |
| OPD | Out Patients Department
| Others |
| OPD | Out Portion Department
| Others |
| OPD | Out-Patient Department
| Others |
| OPD | Outdoor Patient Department
| Others |
| OPD | Outpatient Department
| Others |
| OPD | Outsourced Product Development
| Others |
| OPD | Over Pressure Device
| Others |
| OPD | Overcurrent Protection Device
| Others |
| OPD | Overfill Prevention Device
| Others |
| OPD | Overfill Protection Device
| Others |
| OPD | Overfilling Prevention Device
| Others |
| OPD | Overfilling Prevention Devices
| Others |
| OPD | Overflow Protection Device
| Others |
| OPD | Overton Power District
| Others |
| OPD | Owensboro Police Department
| Others |
| OPD | Oxygen Penetration Depth
| Others |