| Acronym | Definition |
|---|
| OPI➣Other (Political) Party Identifier |
| OPI➣Office of Public Instruction |
| OPI➣Oral Proficiency Interview (English language test) |
| OPI➣Office of Police Integrity (Victoria, Australia) |
| OPI➣Office Products International (London, UK) |
| OPI➣Open Peripheral Interface |
| OPI➣Oracle Programmatic Interface |
| OPI➣Open Postscript Interface |
| OPI➣Oracle Program Interface |
| OPI➣Office of Public Information |
| OPI➣Open Prepress Interface |
| OPI➣Offensive Pass Interference (football) |
| OPI➣Office of Performance Improvement (various locations) |
| OPI➣Of Potential Interest |
| OPI➣Office of Primary Interest |
| OPI➣Oregon Project Independence (Alzheimer's disease) |
| OPI➣Operator Interface |
| OPI➣Outsource Partners International, Inc. |
| OPI➣Over the Phone Interpretation (Language Line Services, Monterey, CA) |
| OPI➣Organizational Performance Improvement (Association of American Medical Colleges) |
| OPI➣Oxygen Percentage Indicator (Respironics) |
| OPI➣One Page Information |
| OPI➣Orphan Pharma International (est. 1999) |
| OPI➣Open Package Inspection |
| OPI➣Oremus Pro Invicem (Latin: Let Us Pray for Each Other) |
| OPI➣Oxford Policy Institute (UK) |
| OPI➣Orthopedic Precision Instruments (Indiana) |
| OPI➣Omnitel Pronto Italia |
| OPI➣Ontario Petroleum Institute (Canada) |
| OPI➣Openings Per Inch ( air filter mesh grades) |
| OPI➣Oil Plant Institute (Vietnam) |
| OPI➣Omnibus Personality Inventory |
| OPI➣Operational Performance Indicator |
| OPI➣Odontorium Products, Inc. (North Hollywood, CA) |
| OPI➣Optional Procedure Indicator |
| OPI➣Outdoor Pointing Interface (meter for aligning broadband satellite signals for internet) |
| OPI➣Optus Private IP |
| OPI➣Outside Plant Interface |
| OPI➣Open Payment Initiative |
| OPI➣Oil Pressure In |
| OPI➣Old Patient In |
| OPI➣Obscenity, Profanity, Indecency (FCC) |
| OPI➣Ocean Profile on the Internet |
| OPI➣Office of Policy Integration (DOE) |
| OPI➣Oxaloacetate Pyruvate Insulin |
| OPI➣Organizational Performance Infrastructure |
| OPI➣Other People's Inventory |
| OPI➣Operator's Instructions |
| OPI➣Object of Potential Interest (robotics) |
| OPI➣Other People's Incompetence |