OPA

Acronym	Definition
OPA	Office of Public Affairs
OPA	Ontario Power Authority (Ontario, Canada)
OPA	Online Publishers Association
OPA	Office of Price Administration
OPA	Offre Publique d'Achat
OPA	Oil Pollution Act of 1990
OPA	Oferta Pública de Adquisición (de Acciones)
OPA	Oferta Publica de Adquisicion (Spanish)
OPA	Online Privacy Alliance
OPA	Otherwise Protected Area
OPA	Office of Population Affairs
OPA	Office of the Patient Advocate
OPA	Offerta Pubblica Di Acquisto (Italian)
OPA	Oil Painters of America
OPA	Optical Parametric Amplifier
OPA	Office of Professional Accountability (Seattle Police Department)
OPA	Office of Payroll Administration
OPA	Ontario Pharmacists' Association
OPA	Optic Atrophy
OPA	Office of Pharmacy Affairs (HHS)
OPA	Oropharyngeal Airway
OPA	Overseas Publishers Association
OPA	Ontario Psychological Association
OPA	Office of Public Assistance
OPA	Ontario Parks Association (Canada)
OPA	Other Procurement, Army
OPA	Official Public Account (Australia)
OPA	Oklahoma Press Association
OPA	Ohio Pharmacists Association
OPA	Office of Policy Analysis
OPA	Office of Planning and Analysis (various locations)
OPA	Ontario Prospectors Association
OPA	Ontario Paramedic Association
OPA	Oregon Paralegal Association
OPA	Office of Premarket Approval
OPA	Outstanding Paper Award
OPA	Offshore Petroleum Act 2006 (Australia)
OPA	Ortho-Phthaldialdehyde
OPA	Office of Program Appraisal
OPA	Oriented Polyamide
OPA	Optical Publishing Association
OPA	Observations Programme Area (JCOMM)
OPA	Other Principal Arterial (transportation)
OPA	Operations, Army
OPA	Organization of Professional Aviculturists
OPA	Officer Personnel Act
OPA	Offense Per Acre (gaming)
OPA	Orthopedic Professional Association (Gilford, New Hampshire)
OPA	Ohio Poetry Association (Ohio)
OPA	Organization of Professional Associations of Sri Lanka
OPA	Orthopaedic Practice Assembly (Medical Group Management Association)
OPA	Office of Professional Attachment
OPA	Out of Place Artifact
OPA	Open Platform Architecture
OPA	Overarching Partnering Agreement
OPA	Outage Probability Analysis
OPA	Ontario Physiotherapists Association
OPA	Ouptut and Performance Analysis
OPA	Other Procurement Authority
OPA	Open Planar Array
OPA	Operations Procurement Authority
OPA	OSI Presentation Address
OPA	Operator Panel Assembly
OPA	Organizational Performance Architecture
OPA	Overhead Precautionary Approach
OPA	Opacity-Associated