| Acronym | Definition |
|---|
| OPAR➣Objectivism: the Philosophy of Ayn Rand (book by Leonard Peikoff) |
| OPAR➣Office of Payment Accuracy and Recovery (Oregon Department of Human Services; Salem, OR) |
| OPAR➣Office of Policy Analysis and Review |
| OPAR➣Oregon Partnership for Alzheimer's Research |
| OPAR➣Office of Public and Alumni Relations (Rutgers University; New Jersey) |