| Acronym | Definition |
|---|
| OPTA➣Onafhankelijke Post en Telecommunicatie Autoriteit |
| OPTA➣Osteopetrosis |
| OPTA➣Optimum Performance Theoretically Attainable |
| OPTA➣Operational Programme Technical Assistance (EU) |
| OPTA➣Orthotic & Prosthetic Technological Association |
| OPTA➣Open Packet Telephony Architecture (Cisco) |