| OLPA | Office of Legislative and Public Affairs 
| Others |
| OLPA | Office of Legislative and Public Affairs (National Science Foundation)
| Others |
| OLPA | Office of Legislative Policy and Analysis
| Others |
| OLPA | Olmstead Linear Park Alliance
| Others |
| OLPA | Olmsted Linear Park Alliance
| Others |
| OLPA | Omaha Legal Professionals Association
| Others |
| OLPA | On Line Payment Authorization
| Others |
| OLPA | Optional Local Purpose Assessment
| Others |
| OLPA | Oral Language Proficiency Assessment
| Others |
| OLPA | Orbital Local Plasma Approximation
| Others |
| OLPA | Ordinary Life Project Association
| Others |
| OLPA | Oregon Livestock Producers Association
| Others |
| OLPA | Otisco Lake Preservation Association
| Others |
| OLPA | Our Lady Of The Pillar Academy
| Others |