| Acronym | Definition |
|---|
| OPPA➣Online Privacy Protection Act (California) |
| OPPA➣Ontario Provincial Police Association (Canada) |
| OPPA➣Ohio Promotional Products Association (Akron, OH) |
| OPPA➣Office of Pre-Professional Advising (University of South Carolina) |
| OPPA➣Office of Policy, Planning and Analysis |
| OPPA➣Operation Plan Package Appraisal |