| Rank | Abbreviation | Meaning |
|---|
| ***** | OLPA | Office of Legislative and Public Affairs
| |
| ***** | OLPA | Ore Lake Preservation Association
| |
| ***** | OLPA | On-Line Process Analysis
| |
| ***** | OLPA | Office of Legislative Policy Analysis
| |
| ***** | OLPA | Oral Language Proficiency Assessment
| |
| ***** | OLPA | Olmsted Linear Park Association
| |
| ***** | OLPA | Office of Legislation and Public Administration
| |
| ***** | OLPA | On-Line Polymer Analysis
| |
| **** | OLPA | Online Payment Authorization
| |
| **** | OLPA | Off-Line Processing Areas
| |
| **** | OLPA | Otisco Lake Preservation Association
| |
| **** | OLPA | Orbital Local Plasma Approxn. (in Stopping Power Calcn. For Ions By Films)
| |
| *** | OLPA | Oregon Livestock Producers Association
| |
| *** | OLPA | Orbital Local Plasma Approximation
| |
| *** | OLPA | Omaha Legal Professionals Association
| |
| *** | OLPA | Ontario Livestock Protective Association
| |
| *** | OLPA | Office of Legislative Policy and Analysis
| |
| ** | OLPA | On Line Psychometric Assessment
| |
| ** | OLPA | Olmsted Linear Park Alliance
| |
| ** | OLPA | Olmstead Linear Park Alliance
| |
| ** | OLPA | Office of the Livingston Parish Assessor
| |
| * | OLPA | Ordinary Life Project Association
| |
| * | OLPA | Odonata Libellulidae Pachydiplax
| |